Michael A'Hearn

Q: What Schools Are Affiliated With Michael A'Hearn

Michael A'Hearn is affiliated with the following schools: University of Maryland, College Park, Boston College, University of Wisconsin–Madison

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Michael A'Hearn

Physics

#3416

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#4863

Historical Rank

#1242

USA Rank

Astronomy

#465

World Rank

#873

Historical Rank

#242

USA Rank

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Physics

Why Is Michael A'Hearn Influential?

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According to Wikipedia, Michael Francis A'Hearn was an American astronomer and astronomy professor at the University of Maryland College of Computer, Mathematical, and Natural Sciences. He was also the principal investigator for NASA's EPOXI mission.

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Michael A'Hearn's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

The ensemble properties of comets: Results from narrowband photometry of 85 comets (1995) (797)
Deep Impact: Excavating Comet Tempel 1 (2005) (655)
Comet Bowell (1980b) (1982) (450)
Report of the IAU Working Group on Cartographic Coordinates and Rotational Elements: 2009 (2011) (413)
On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko (2015) (382)
EPOXI at Comet Hartley 2 (2011) (369)
Temporal and Spatial Variability of Lunar Hydration As Observed by the Deep Impact Spacecraft (2009) (348)
Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun (2015) (331)
OSIRIS – The Scientific Camera System Onboard Rosetta (2007) (307)
Spitzer Spectral Observations of the Deep Impact Ejecta (2006) (291)
The morphological diversity of comet 67P/Churyumov-Gerasimenko (2015) (282)
Report of the IAU/IAG Working Group on cartographic coordinates and rotational elements: 2006 (2007) (242)
The global shape, density and rotation of Comet 67P/Churyumov-Gerasimenko from preperihelion Rosetta/OSIRIS observations (2016) (233)
Studies of proton-irradiated cometary-type ice mixtures (1983) (219)
Exposed Water Ice Deposits on the Surface of Comet 9P/Tempel 1 (2006) (218)
Cyanogen jets in comet Halley (1986) (198)
Shape model, reference system definition, and cartographic mapping standards for comet 67P/Churyumov-Gerasimenko Stereo-photogrammetric analysis of Rosetta/OSIRIS image data (2015) (196)
Spectrophotometric properties of the nucleus of comet 67P/Churyumov-Gerasimenko from the OSIRIS instrument onboard the ROSETTA spacecraft (2015) (180)
Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System (2011) (170)
The primordial nucleus of comet 67P/Churyumov-Gerasimenko (2015) (163)
Insolation, erosion, and morphology of comet 67P/Churyumov-Gerasimenko (2015) (162)
Deep Impact: Observations from a Worldwide Earth-Based Campaign (2005) (158)
Large heterogeneities in comet 67P as revealed by active pits from sinkhole collapse (2015) (155)
ALIEN MAPS OF AN OCEAN-BEARING WORLD (2009) (155)
EVOLUTION OF THE DUST SIZE DISTRIBUTION OF COMET 67P/CHURYUMOV–GERASIMENKO FROM 2.2 au TO PERIHELION (2016) (147)
The HB Narrowband Comet Filters: Standard Stars and Calibrations (2000) (137)
Earth as an extrasolar planet: Earth model validation using EPOXI earth observations. (2011) (136)
Two independent and primitive envelopes of the bilobate nucleus of comet 67P (2015) (136)
The shape, topography, and geology of Tempel 1 from Deep Impact observations (2007) (134)
Report of the IAU Working Group on Cartographic Coordinates and Rotational Elements: 2015 (2018) (130)
The fluorescence of cometary OH (1988) (130)
Surface temperature of the nucleus of Comet 9P/Tempel 1 (2007) (125)
COMETARY VOLATILES AND THE ORIGIN OF COMETS (2012) (119)
Vaporization of comet nuclei: Light curves and life times (1979) (117)
The Deep Impact oblique impact cratering experiment (2007) (117)
E-Type Asteroid (2867) Steins as Imaged by OSIRIS on Board Rosetta (2010) (116)
Size-frequency distribution of boulders ≥7 m on comet 67P/Churyumov-Gerasimenko (2015) (116)
Physical Properties of the Nucleus of Comet 2P/Encke (2000) (110)
Shape, density, and geology of the nucleus of Comet 103P/Hartley 2 (2013) (109)
The internal structure of Jupiter family cometary nuclei from Deep Impact observations: The “talps” or “layered pile” model (2007) (109)
A distribution of large particles in the coma of Comet 103P/Hartley 2 (2013) (106)
The discovery of S2 in comet IRAS-Araki-Alcock 1983d (1983) (103)
Thirty Meter Telescope Detailed Science Case: 2015 (2015) (103)
Water vaporization on Ceres (1992) (102)
Are fractured cliffs the source of cometary dust jets ? insights from OSIRIS/Rosetta at 67P/Churyumov-Gerasimenko (2015) (102)
Thermal properties, sizes, and size distribution of Jupiter-family cometary nuclei (2013) (102)
Summer fireworks on comet 67P (2016) (99)
EPOXI: COMET 103P/HARTLEY 2 OBSERVATIONS FROM A WORLDWIDE CAMPAIGN (2011) (98)
OSIRIS observations of meter-sized exposures of H2O ice at the surface of 67P/Churyumov-Gerasimenko and interpretation using laboratory experiments (2015) (96)
The Activity and Size of the Nucleus of Comet Hale-Bopp (C/1995 O1) (1997) (95)
Seasonal mass transfer on the nucleus of comet 67P/Chuyumov–Gerasimenko (2017) (93)
The rotation state of 67P/Churyumov-Gerasimenko from approach observations with the OSIRIS cameras on Rosetta (2014) (93)
An Overview of the Instrument Suite for the Deep Impact Mission (2005) (93)
Alice: The rosetta Ultraviolet Imaging Spectrograph (2006) (91)
Rosetta’s comet 67P/Churyumov-Gerasimenko sheds its dusty mantle to reveal its icy nature (2016) (90)
PHOTOMETRIC STUDY OF THE KREUTZ COMETS OBSERVED BY SOHO FROM 1996 TO 2005 (2010) (88)
The temperature, thermal inertia, roughness and color of the nuclei of Comets 103P/Hartley 2 and 9P/Tempel 1 (2013) (87)
The global meter-level shape model of comet 67P/Churyumov-Gerasimenko (2017) (87)
The pristine interior of comet 67P revealed by the combined Aswan outburst and cliff collapse (2017) (87)
Subaru Telescope Observations of Deep Impact (2005) (86)
HST and VLT Investigations of the Fragments of Comet C/1999 S4 (LINEAR) (2001) (85)
The nucleus of Comet 9P/Tempel 1: Shape and geology from two flybys (2013) (85)
Deep Impact photometry of Comet 9p/Tempel 1 (2007) (85)
The distribution of water ice in the interior of Comet Tempel 1 (2007) (85)
Rosetta-Alice observations of exospheric hydrogen and oxygen on Mars (2011) (83)
Measurements of the near-nucleus coma of comet 67P/Churyumov-Gerasimenko with the Alice far-ultraviolet spectrograph on Rosetta (2015) (82)
The nucleus of Comet P/Tempel 2 (1989) (82)
Ozone abundance on Mars from infrared heterodyne spectra: I. Acquisition, retrieval, and anticorrelation with water vapor (2006) (80)
Dust coma morphology in the Deep Impact images of Comet 9P/Tempel 1 (2007) (80)
Observational and dynamical constraints on the rotation of Comet P/Halley (1991) (80)
Detection of CO Cameron band emission in comet P/Hartley 2 (1991 XV) with the Hubble Space Telescope (1994) (80)
COLLISIONAL EXCAVATION OF ASTEROID (596) SCHEILA (2011) (80)
A Search for a Sub-Earth-Sized Companion to GJ 436 and a Novel Method to Calibrate Warm Spitzer IRAC Observations (2010) (80)
STUDYING THE ATMOSPHERE OF THE EXOPLANET HAT-P-7b VIA SECONDARY ECLIPSE MEASUREMENTS WITH EPOXI, SPITZER, AND KEPLER (2009) (78)
The bare nucleus of comet Neujmin 1 (1987) (73)
The Nucleus of Comet Hyakutake (C/1996 B2) (1999) (71)
IUE observations of comet Halley during the Vega and Giotto encounters (1986) (71)
Collision of comet Shoemaker-Levy 9 with Jupiter observed by the NASA infrared telescope facility (1995) (69)
Properties of an Earth-like planet orbiting a Sun-like star: Earth observed by the EPOXI mission. (2011) (69)
Deep Impact: A Large-Scale Active Experiment on a Cometary Nucleus (2005) (69)
An investigation of the nucleus and coma of Comet P/Arend-Rigaux (1985) (68)
Spitzer Space Telescope Observations of the Nucleus of Comet 103P/Hartley 2 (2009) (64)
Detection of CN Emission from (2060) Chiron (1991) (64)
Photometric properties of the nucleus of Comet 103P/Hartley 2 (2013) (62)
Geomorphology of the Imhotep region on comet 67P/Churyumov-Gerasimenko from OSIRIS observations (2015) (62)
Comets as Building Blocks (2011) (60)
Scientific assessment of the quality of OSIRIS images (2015) (59)
Deep Impact: excavating comet 9P/Tempel 1 (2005) (59)
IUE observations of faint comets (1981) (59)
Comet 67P/Churyumov-Gerasimenko: Constraints on its origin from OSIRIS observations (2015) (58)
Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past (2017) (57)
Photometric analysis and disk-resolved thermal modeling of Comet 19P/Borrelly from Deep Space 1 data (2007) (57)
67P/Churyumov-Gerasimenko: Activity between March and June 2014 as observed from Rosetta/OSIRIS (2015) (55)
Hubble Space Telescope Observations of Comet P/Shoemaker-Levy 9 (1993e) (1994) (55)
Sunset jets observed on comet 67P/Churyumov-Gerasimenko sustained by subsurface thermal lag (2016) (55)
Photometric analysis of Eros from NEAR data (2004) (54)
Detection of exposed H₂O ice on the nucleus of comet 67P/Churyumov-Gerasimenko (2016) (54)
The 2016 Feb 19 outburst of comet 67P/CG: an ESA Rosetta multi-instrument study (2016) (53)
Morphology of HCN and CN in Comet Hale-Bopp (1995 O1) (1998) (51)
Photometric analysis of the nucleus of Comet 81P/Wild 2 from Stardust images (2009) (51)
Narrowband photometry of Comet P/Stephan-Oterma and the backscattering properties of cometary grains (1982) (51)
The nucleus of Comet 22P/Kopff and its inner coma (2002) (50)
Gas and dust in some recent periodic comets (1979) (49)
Aswan site on comet 67P/Churyumov-Gerasimenko: Morphology, boulder evolution, and spectrophotometry (2016) (49)
Water production models for comet Bradfield /1979 X/ (1981) (48)
Comet Encke: Gas production and lightcurve (1985) (47)
CO(+) fluorescence in comets (1985) (47)
Post-Perihelion HST Observations of Comet Hale-Bopp (1999) (47)
ROTATIONAL VARIABILITY OF EARTH'S POLAR REGIONS: IMPLICATIONS FOR DETECTING SNOWBALL PLANETS (2011) (47)
Is CO2 responsible for the outbursts of comet Halley? (1986) (47)
The evolution of the infrared emission from the Type II supernova 1980k in NGC 6946 - The dust formation model (1983) (46)
Stardust-NExT, Deep Impact, and the accelerating spin of 9P/Tempel 1 (2011) (46)
Detection of exposed H2O ice on the nucleus of comet 67P/Churyumov-Gerasimenko - as observed by Rosetta OSIRIS and VIRTIS instruments (2016) (46)
A tale of two very different comets: ISO and MSX measurements of dust emission from 126P/IRAS (1996) and 2P/Encke (1997) (2004) (46)
The complex spin state of 103P/Hartley 2: Kinematics and orientation in space (2013) (46)
Acceleration of individual, decimetre-sized aggregates in the lower coma of comet 67P/Churyumov-Gerasimenko (2016) (45)
SYSTEM PARAMETERS, TRANSIT TIMES, AND SECONDARY ECLIPSE CONSTRAINTS OF THE EXOPLANET SYSTEMS HAT-P-4, TrES-2, TrES-3, and WASP-3 FROM THE NASA EPOXI MISSION OF OPPORTUNITY (2010) (45)
THE CARBON MONOXIDE ABUNDANCE IN COMET 103P/HARTLEY 2 DURING THE EPOXI FLYBY (2011) (44)
A SEARCH FOR ADDITIONAL PLANETS IN THE NASA EPOXI OBSERVATIONS OF THE EXOPLANET SYSTEM GJ 436 (2009) (43)
Geologic control of jet formation on Comet 103P/Hartley 2 (2013) (43)
The Coma of Comet 9P/Tempel 1 (2005) (42)
Variegation of comet 67P/Churyumov-Gerasimenko in regions showing activity (2016) (42)
Geomorphology and spectrophotometry of Philae’s landing site on comet 67P/Churyumov-Gerasimenko (2015) (42)
Evidence of sub-surface energy storage in comet 67P from the outburst of 2016 July 03 (2017) (41)
Comet 9P/Tempel 1 During the Deep Impact Encounter (2005) (41)
Deep Impact: Working Properties for the Target Nucleus – Comet 9P/Tempel 1 (2005) (41)
Molecular production rates in Comet Kohoutek (1975) (40)
Seasonal erosion and restoration of the dust cover on comet 67P/Churyumov-Gerasimenko as observed by OSIRIS onboard Rosetta (2017) (40)
Cometary cryo-volcanism: Source regions and a model for the UT 2005 June 14 and other mini-outbursts on Comet 9P/Tempel 1 (2008) (40)
Hubble Space Telescope Observations of the Nucleus of Comet 45P/Honda–Mrkos–Pajdusakova and Its Inner Coma (1999) (39)
The nucleus and inner coma of comet 46P/Wirtanen (1998) (39)
Thermal modelling of water activity on comet 67P/Churyumov-Gerasimenko with global dust mantle and plural dust-to-ice ratio (2017) (39)
Large-scale dust jets in the coma of 67P/Churyumov-Gerasimenko as seen by the OSIRIS instrument onboard Rosetta (2015) (39)
IUE observations of comet P/Halley: evolution of the ultraviolet spectrum between September 1985 and July 1986 (1988) (38)
Infrared photometry of the dust in comets. (1984) (38)
An Extended Source for CN Jets in Comet P/Halley-Models and Results (1993) (38)
CHANGES IN THE PHYSICAL ENVIRONMENT OF THE INNER COMA OF 67P/CHURYUMOV–GERASIMENKO WITH DECREASING HELIOCENTRIC DISTANCE (2016) (38)
Dust mass distribution around comet 67P/Churyumov-Gerasimenko determined via parallax measurements using Rosetta's OSIRIS cameras (2017) (38)
The NH and CH Bands of Comet C/1996 B2 (Hyakutake) (1998) (38)
THE EVOLVING ACTIVITY OF THE DYNAMICALLY YOUNG COMET C/2009 P1 (Garradd) (2014) (38)
Formaldehyde in Comets C/1995 O1 (Hale-Bopp), C/2002 T7 (LINEAR), and C/2001 Q4 (NEAT): Investigating the Cometary Origin of H2CO (2006) (37)
Properties of the nuclei and comae of 13 ecliptic comets from Hubble Space Telescope snapshot observations (2009) (37)
Gas outflow and dust transport of comet 67P Churyumov Gerasimenko (2016) (37)
Determination of the light curve of the Rosetta target asteroid (2867) Steins by the OSIRIS cameras onboard Rosetta (2006) (36)
OSIRIS - the optical, spectroscopic and infrared remote imaging system for the Rosetta Orbiter (1998) (36)
Invited Article: Deep Impact instrument calibration. (2008) (36)
Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development (2015) (36)
The origin of pits on 9P/Tempel 1 and the geologic signature of outbursts in Stardust-NExT images (2013) (35)
IUE observations of the UV spectrum of comet Bradfield (1980) (35)
The scattering phase function of comet 67P/Churyumov–Gerasimenko coma as seen from the Rosetta/OSIRIS instrument (2017) (35)
Tensile strength of 67P/Churyumov-Gerasimenko nucleus material from overhangs (Corrigendum) (2017) (35)
The scattering phase function of comet 67P/Churyumov–Gerasimenko coma as seen from the Rosetta/OSIRIS instrument (2017) (35)
Multi-cycle fluorescence: Application to S2 in comet IRAS-Araki-Alcock 1983VII (1990) (35)
Observations of Cometary Nuclei (1988) (35)
Upper limits of SO and SO2 in Comets (1991) (34)
ROTATION OF COMET 103P/HARTLEY 2 FROM STRUCTURES IN THE COMA (2011) (34)
Atomic Sulfur in Cometary Comae Based on UV Spectra of the SITriplet near 1814 Å (1997) (34)
The outburst triggered by the Deep Impact collision with Comet Tempel 1 (2008) (34)
Detection of OCS in comet Hyakutake (C/1996 B2) (1997) (34)
Hubble Space Telescope observations of the nucleus of Comet 9P/Tempel 1 (2001) (34)
Observations and analysis of a curved jet in the coma of comet 67P/Churyumov-Gerasimenko (2016) (34)
WISE/NEOWISE OBSERVATIONS OF COMET 103P/HARTLEY 2 (2011) (34)
Observations of Comet 9P/Tempel 1 around the Deep Impact event by the OSIRIS cameras onboard Rosetta (2007) (34)
Mosaicked Images and Spectra of J = 1 → 0 HCN and HCO+ Emission from Comet Hale-Bopp (1995 O1) (1998) (33)
The nucleus of Deep Impact target Comet 9P/Tempel 1 (2003) (33)
The pebbles/boulders size distributions on Sais: Rosetta’s final landing site on comet 67P/Churyumov–Gerasimenko (2017) (33)
(2060) Chiron: Evidence for Activity near Aphelion (2001) (33)
IUE observations of the evolution of comet Wilson (1986): comparison with P/Halley (1989) (33)
The persistent activity of Jupiter-family comets at 3-7 AU (2013) (32)
Infrared Observations Of Dust Emission From Comet Hale-Bopp (1997) (32)
A BIMA Array Survey of Molecules in Comets LINEAR (C/2002 T7) and NEAT (C/2001 Q4) (2006) (31)
Ion Composition and Upstream Solar Wind Observations at Comet Giacobini-Zinner (2013) (31)
Deep Impact at Comet Tempel 1 (2007) (31)
Constraints on cometary surface evolution derived from a statistical analysis of 67P’s topography (2017) (30)
Ozone abundance on Mars from infrared heterodyne spectra: II. Validating photochemical models (2006) (30)
Report of the IAU/IAG Working Group on Cartographic Coordinates and Rotational Elements: 2003 (2005) (30)
H 2 O and O 2 absorption in the coma of comet 67P/Churyumov-Gerasimenko measured by the Alice far-ultraviolet spectrograph on Rosetta (2017) (30)
Temporal and spatial behavior of the ultraviolet emissions of comet IRAS-Araki-Alcock 1983d (1984) (29)
Deep Impact and the Origin and Evolution of Cometary Nuclei (2008) (29)
Carbon Monoxide in Comet 9P/Tempel 1 before and after the Deep Impact Encounter (2006) (29)
The detection, localization, and dynamics of large icy particles surrounding Comet 103P/Hartley 2 (2012) (29)
Characterization of the Abydos region through OSIRIS high-resolution images in support of CIVA measurements (2016) (29)
The southern hemisphere of 67P/Churyumov-Gerasimenko: Analysis of the preperihelion size-frequency distribution of boulders ≥7 m (2016) (28)
A mini outburst from the nightside of comet 67P/Churyumov-Gerasimenko observed by the OSIRIS camera on Rosetta (2016) (28)
The highly active Anhur–Bes regions in the 67P/Churyumov–Gerasimenko comet: results from OSIRIS/ROSETTA observations (2017) (28)
Sulfur Chemistry at Millimeter Wavelengths in C/Hale-Bopp (1997) (28)
CHARACTERIZING THE DUST COMA OF COMET C/2012 S1 (ISON) AT 4.15 AU FROM THE SUN (2013) (27)
The disappearance of OH from Comet P/Encke (1983) (27)
Photometry of the nucleus of Comet 9P/Tempel 1 from Stardust-NExT flyby and the implications (2013) (27)
Meter-scale thermal contraction crack polygons on the nucleus of comet 67P/Churyumov-Gerasimenko (2018) (27)
Geologic mapping of the Comet 67P/Churyumov-Gerasimenko's Northern Hemisphere (2016) (26)
The Inner Coma and Nucleus of Comet Hale–Bopp: Results from a Stellar Occultation (1999) (26)
The 67P/Churyumov–Gerasimenko observation campaign in support of the Rosetta mission (2017) (26)
NH emission in comets: Fluorescence vs collisions (1987) (26)
An investigation into periodicities in the morphology of CN jets in comet P/Halley (1988) (26)
Vaporization in comets; Outbursts from comet Schwassmann-Wachmann 1 (1982) (26)
THE NATURE AND FREQUENCY OF THE GAS OUTBURSTS IN COMET 67P/CHURYUMOV–GERASIMENKO OBSERVED BY THE ALICE FAR-ULTRAVIOLET SPECTROGRAPH ON ROSETTA (2016) (25)
An Interferometric Study of HCN in Comet Hale-Bopp (C/1995 O1) (2000) (25)
The Deep Impact Earth-Based Campaign (2005) (25)
The Neutral Coma (1990) (25)
Size-frequency distribution of boulders ≥10 m on comet 103P/Hartley 2 (2015) (24)
Surface geomorphology of Jupiter Family Comets: A geologic process perspective (2013) (24)
Deep Impact instrument calibration (2008) (24)
Ultraviolet spectrophotometry of comet Giacobini-Zinner during the ICE encounter. [International Cometary Explorer (ICE)] (1986) (24)
High-resolution infrared spectroscopic measurements of Comet 2P/Encke: Unusual organic composition and low rotational temperatures (2013) (24)
Rotating dust particles in the coma of comet 67P/Churyumov-Gerasimenko (2015) (24)
Geomorphological mapping of comet 67P/Churyumov-Gerasimenko's Southern hemisphere (2016) (23)
Standard stars for photometry of comets (1990) (23)
Orbital elements of the material surrounding comet 67P/Churyumov-Gerasimenko (2015) (23)
BIMA Array Photodissociation Measurements of HCN and CS in Comet Hale-Bopp (C/1995 O1) (2001) (23)
CONSTRAINING THE DUST COMA PROPERTIES OF COMET C/SIDING SPRING (2013 A1) AT LARGE HELIOCENTRIC DISTANCES (2014) (23)
Orbital elements of the material surrounding comet 67P/Churyumov-Gerasimenko (2015) (23)
S2 - A clue to the origin of cometary ice? (1985) (23)
Sunskirting comets discovered with the LASCO coronagraphs over the decade 1996–2008 (2013) (23)
Properties of the nuclei and comae of 10 ecliptic comets from Hubble Space Telescope multi-orbit observations (2011) (22)
Activity of comet P/Halley 23-25 March, 1986 - IUE observations (1988) (22)
ULTRAVIOLET DISCOVERIES AT ASTEROID (21) LUTETIA BY THE ROSETTA ALICE ULTRAVIOLET SPECTROGRAPH (2011) (22)
Analysis of the sunward continuum features of Comet 103P/Hartley 2 from ground-based images (2013) (22)
Sublimation of icy aggregates in the coma of comet 67P/Churyumov-Gerasimenko detected with the OSIRIS cameras on board Rosetta. (2016) (22)
Decimetre-scaled spectrophotometric properties of the nucleus of comet 67P/Churyumov-Gerasimenko from OSIRIS observations (2016) (22)
Long-term survival of surface water ice on comet 67P (2017) (21)
Physical properties and dynamical relation of the circular depressions on comet 67P/Churyumov-Gerasimenko (2016) (21)
The Distribution, Excitation, and Formation of Cometary Molecules: Methanol, Methyl Cyanide, and Ethylene Glycol (2008) (21)
Deep Impact, Stardust-NExT and the behavior of Comet 9P/Tempel 1 from 1997 to 2010 (2011) (21)
Spatial structure in the color of the dust coma of comet P/Halley (1989) (21)
FUV Spectral Signatures of Molecules and the Evolution of the Gaseous Coma of Comet 67P/Churyumov–Gerasimenko (2017) (21)
Ultraviolet and visible photometry of asteroid (21) Lutetia using the Hubble Space Telescope (2009) (20)
The far-ultraviolet albedo of Šteins measured with Rosetta-ALICE (2010) (20)
The rotational structure of the B–X system of sulfur dimers in the spectra of Comet Hyakutake (C/1996 B2) (2003) (20)
Investigating the physical properties of outbursts on comet 67P/Churyumov–Gerasimenko (2017) (20)
Comparison of water production rates from UV spectroscopy and visual magnitudes for some recent comets (1990) (20)
Spectrophotometry of the Khonsu region on the comet 67P/Churyumov–Gerasimenko using OSIRIS instrument images (2016) (19)
Comets: looking ahead (2017) (19)
Using photochemistry to explain the formation and observation of C2 in comets (1997) (19)
Alice—An ultraviolet imaging spectrometer for the Rosetta Orbiter (1998) (19)
The Opposition Effect of 67P/Churyumov-Gerasimenko on post-perihelion Rosetta images (2017) (19)
Deep Sub-Surface Exploration of Cometary Nuclei (1999) (19)
Ultraviolet Observations of Coronal Mass Ejection Impact on Comet 67P/Churyumov–Gerasimenko by Rosetta Alice (2017) (18)
Triple F—a comet nucleus sample return mission (2009) (18)
Vaporization in comets: The icy grain halo of comet west (1980) (18)
Gaseous jets in Comet P/Halley (1986) (18)
Where is the ice in comets (1981) (18)
BIMA Array Detections of HCN in Comets LINEAR (C/2002 T7) and NEAT (C/2001 Q4) (2005) (18)
A three-dimensional modelling of the layered structure of comet 67P/Churyumov-Gerasimenko (2017) (18)
Infrared photometry of Comet Bowell and other comets (1984) (18)
Radiometric and calibration performance results of the Rosetta UV imaging spectrometer ALICE (2001) (18)
BIMA and VLA Observations of Comet Hale-Bopp at 22-115 GHz (1998) (17)
Interiors of small bodies: foundations and perspectives (2003) (17)
Erratum to: Reports of the IAU Working Group on Cartographic Coordinates and Rotational Elements: 2006 & 2009 (2011) (17)
First extreme and far ultraviolet spectrum of a Comet Nucleus: Results from 67P/Churyumov-Gerasimenko (2015) (17)
Comparative study of water ice exposures on cometary nuclei using multispectral imaging data (2016) (16)
Post-perihelion photometry of dust grains in the coma of 67P Churyumov-Gerasimenko (2017) (16)
CCD Imaging of Comet Wilson (1987VII): A Quantitative Coma Analysis (1993) (16)
RADIOASTRONOMICAL OBSERVATIONS OF COMETS IRAS-ARAKI-ALCOCK (1983D) AND SUGANO-SAIGUSA-FUJIKAWA (1983E) (1984) (16)
Comet Bowell (1980b): Measurement of the optical thickness of the coma and particle albedo from a stellar occultation (1984) (16)
Deep Impact and sample return (2008) (16)
Emission by OD in comets (1985) (15)
A NEWLY DEVELOPED FLUORESCENCE MODEL FOR C2H6 ν5 AND APPLICATION TO COMETARY SPECTRA ACQUIRED WITH NIRSPEC AT KECK II (2011) (15)
Atomic Deuterium Emission and the D/H Ratio in Comets (2008) (15)
Ultraviolet imaging spectroscopy of comet Lee (C/1999 H1) with HST/STIS. (1999) (15)
Far-UV phase dependence and surface characteristics of Comet 67P/Churyumov-Gerasimenko as observed with Rosetta Alice (2015) (15)
Deep Impact - Exploring the Interior of a Comet (2000) (14)
Possible interpretation of the precession of comet 67P/Churyumov-Gerasimenko (2016) (14)
Opposition effect on comet 67P/Churyumov-Gerasimenko using Rosetta-OSIRIS images (2017) (14)
COUPLED ESCAPE PROBABILITY FOR AN ASYMMETRIC SPHERICAL CASE: MODELING OPTICALLY THICK COMETS (2012) (14)
HST mid-ultraviolet spectroscopy of comet 46P/Wirtanen during its approach to perihelion in 1996-1997 (1998) (14)
Spitzer observations of the asteroid-comet transition object and potential spacecraft target 107P (4015) Wilson-Harrington (2009) (14)
Variability in Comet P/Swift-Tuttle (1994) (13)
Comet P/Encke's nongravitational force (1988) (13)
Search for satellites near comet 67P/Churyumov-Gerasimenko using Rosetta/OSIRIS images (2015) (13)
Ultraviolet CO Emission in Comet C/1996 B2 (Hyakutake) (1996) (13)
THE PRE-PERIHELION ACTIVITY OF DYNAMICALLY NEW COMET C/2013 A1 (SIDING SPRING) AND ITS CLOSE ENCOUNTER WITH MARS (2015) (13)
Polarization fourier spectrometer for astronomy. (1974) (13)
Long-term monitoring of comet 67P/Churyumov–Gerasimenko’s jets with OSIRIS onboard Rosetta (2017) (13)
The size and thermal properties of the nucleus of Comet 22P/Kopff (2009) (13)
EPOXI instrument calibration (2013) (13)
Multivariate statistical analysis of OSIRIS/Rosetta spectrophotometric data of comet 67P/Churyumov-Gerasimenko (2017) (12)
Far-ultraviolet Spectroscopy of Recent Comets with the Cosmic Origins Spectrograph on the Hubble Space Telescope (2016) (12)
Comet Bradfield 1979 X - The gassiest comet (1981) (12)
Observations of Comet 67P/Churyumov-Gerasimenko with the International Ultraviolet Explorer at Perihelion in 1982 (2004) (12)
The Rosetta campaign to detect an exosphere at Lutetia (2012) (12)
Searching for the Deep Impact crater on Comet 9P/Tempel 1 using image processing techniques (2007) (12)
The Agilkia boulders/pebbles size-frequency distributions: OSIRIS and ROLIS joint observations of 67P surface (2016) (12)
Erratum to ``A distribution of large particles in the coma of Comet 103P/Hartley 2'' (vol 222, pg 634, 2013) (2015) (12)
A SEARCH FOR ADDITIONAL PLANETS IN FIVE OF THE EXOPLANETARY SYSTEMS STUDIED BY THE NASA EPOXI MISSION (2011) (12)
Rosetta Alice/VIRTIS observations of the water vapour UV electroglow emissions around comet 67P/Churyumov-Gerasimenko (2017) (12)
A Possible Satellite of Herculina. (1978) (12)
Shells in the C2 Coma of Comet P/Halley (1995) (12)
The Nucleus of 10 Short-Period Comets (2000) (11)
Restoration of Images of Comet 9P/Tempel 1 Taken with the Deep Impact High Resolution Instrument (2007) (11)
Ultraviolet observations of Chiron with the HST/FOS: Examining a Centaur's Gray Matter (1997) (11)
Inner coma imaging of Comet Levy (1990c) with the Hubble Space Telescope (1992) (10)
Two Body Fixes by Calculator (1977) (10)
Ultraviolet spectroscopy of Asteroid (4) Vesta (2011) (10)
Comet Hopper: A Mission Concept for Exploring the Heterogeneity of Comets (2008) (9)
Rotational state of the nucleus of Comet 9P/Tempel 1: Results from Hubble Space Telescope observations in 2004 (2007) (9)
Ultraviolet Albedo of Cometary Grains (1985) (9)
Photometry of dust grains of comet 67P and connection with nucleus regions (2016) (9)
Interpretation of results of deconvolved images from the Deep Impact spacecraft High Resolution Instrument (2013) (9)
Energy balance of the Deep Impact experiment (2009) (9)
Characterization of dust aggregates in the vicinity of the Rosetta spacecraft (2017) (9)
Geomorphological and spectrophotometric analysis of Seth's circular niches on comet 67P/Churyumov–Gerasimenko using OSIRIS images (2017) (9)
Temperature of the Nucleus of Comet Tempel 1 (2006) (8)
Comet C/2013 A1 (Siding Spring) (2014) (8)
AN ANALYSIS OF CO PRODUCTION IN COMETARY COMAE: CONTRIBUTIONS FROM GAS-PHASE PHENOMENA (2008) (8)
Properties of comet 9P/Tempel 1 dust immediately following excavation by deep impact (2014) (8)
Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko (2015) (8)
Stratospheric ozone profiles from Mauna Kea, Hawai'i (19.8°N, 155.5°W) using infrared heterodyne spectroscopy, 1988–2003 (2004) (8)
Herschel and IRAM-30 m observations of comet C/2012 S1 (ISON) at 4.5 AU from the Sun (2013) (7)
Constraints on the size, shape, and density of (4) Vesta. (1989) (7)
Whence Comets? (2006) (7)
ROSETTA: How to archive more than 10 years of mission (2018) (7)
The variability of Halley's Comet during the Vega, Planet-A, and Giotto encounters (1986) (7)
Expectations for Infrared Spectroscopy of 9P/Tempel 1 from Deep Impact (2005) (7)
PROMPT EMISSION BY OH IN COMET HYAKUTAKE (2015) (7)
Comparative Planetology with an Earth Perspective (1995) (7)
Distance determination method of dust particles using Rosetta OSIRIS NAC and WAC data (2017) (7)
Water Ice on Tempel 1: Before, During, and After the Impact Event (2006) (7)
Cometary science: Fly-through at Wild 2 (2004) (6)
IUE observations of Comet Halley: Evolution of the UV spectrum between September 1985 and June 1986 (1986) (6)
SEASONAL EVOLUTION ON THE NUCLEUS OF COMET C/2013 A1 (SIDING SPRING) (2016) (6)
X-Band VLA observations of comet Hyakutake (C/1996 B2) and implications for nuclear properties (1997) (6)
Development and utilization of a point spread function for the Extrasolar Planet Observation and Characterization/Deep Impact Extended Investigation (EPOXI) Mission (2010) (6)
Periodic Comet Shoemaker-Levy 9 (1993e) (1994) (6)
Deep Impact MRI Observations Of Comet Garradd (C/2009 P1) (2012) (6)
ALICE — THE ULTRAVIOLET IMAGING SPECTROMETER ABOARD THE ROSETTA ORBITER (2000) (6)
Observations of lambda 4430 in reflection nebulae. (1971) (6)
Stellar Occultation by Comet 67P/Churyumov–Gerasimenko Observed with Rosetta's Alice Far-ultraviolet Spectrograph (2019) (6)
Photometric Analysis of the Nucleus of Comet 81P/Wild 2 from Stardust NAVCAM Data (2008) (6)
On the Formation and Evolution of Gaseous Structures in Comet P/Halley (1993) (6)
Automatic removal of cosmic ray signatures in Deep Impact images (2006) (6)
The study of comets, part 2 (1976) (6)
Ultraviolet Spectroscopy of Comet 9P/Tempel 1 with Alice/Rosetta during the Deep Impact Encounter (2006) (5)
Asymmetry of Gaseous CO2 and H2O in the Inner Coma of Comet Tempel 1 (2006) (5)
Thermophysics of fractures on comet 67P/Churyumov-Gerasimenko (2017) (5)
Icy Grains in Comet 103P/Hartley 2 (2011) (5)
Chemical abundances in comets (1981) (5)
Small Comets (SCs): an Unstudied Population in the Solar System Inventory (1996) (5)
HST Observations of Comet Shoemaker-Levy (1993E) (1991) (5)
Characterization of the nucleus of comet Hale-Bopp from HST and ISO observations (1999) (5)
Comet Geology with Deep Impact Remote Sensing (2005) (5)
Heterogeneity of Comet 103P/Hartley 2's Gaseous Coma (2011) (5)
Were any impact flashes seen in reflection from the satellites (1995) (4)
The Deep Impact Collision: A Large-Scale Oblique Impact Experiment (2006) (4)
Chemistry of Comets (1984) (4)
CN jet velocity in Comet P/Halley (1992) (4)
The Nucleus of Comet Arend / Rigaux (1985) (4)
Evolution of the ultraviolet coma of comet Austin (1982g.) (1984) (4)
Pluto: a planet or a trans-Neptunian object? (2002) (4)
Combined BIMA and OVRO Observations of Comet C/1999 S4 (LINEAR) (2004) (4)
The 19 Feb . 2016 Outburst of Comet 67 P / CG 1 The 19 Feb . 2016 Outburst of Comet 67 P / CG : An ESA Rosetta Multi-Instrument Study (2016) (4)
Jet Activity in Comet 103P/Hartley 2 as Observed by the Deep Impact Spacecraft (2011) (4)
The grains and gas in Comet Bowell 1980b (1983) (4)
Services of the Small Bodies Node of the Planetary Data System (1996) (4)
Ultraviolet Spectroscopy of C/2009 P1 (Garradd) with the Hubble Space Telescope (2012) (4)
Comet Grigg-Skjellerup: Radar Detection of Nucleus. (1982) (4)
Comet 103P/Hartley's volatiles within 100 kilometers: Sources of water and volatile dependence on illumination (2014) (3)
Gas and Dust Imaging of the Inner Coma of 9P/Tempel 1 Before and After Impact (2006) (3)
Results From SEPPCoN, a Survey to Study the Physical Properties of the Nuclei and Dust of Jupiter-Family Comets (2007) (3)
Dust Outbursts From Comet 67P/Churyumov-Gerasimenko Observed by Rosetta-Alice (2015) (3)
Imaging Comets ISON and Garradd With the Deep Impact Flyby Spacecraft (2013) (3)
The Deep Impact Project (2005) (3)
A Study of C/2009 P1 Garradd's Dominant Volatiles as Observed by the Deep Impact HRI-IR Spectrometer (2012) (3)
Deep Impact Photometry of the Nucleus of Comet 9P/Tempel 1 (2005) (3)
Laboratory Studies for Planetary Sciences. A Planetary Decadal Survey White Paper Prepared by the American Astronomical Society (AAS) Working Group on Laboratory Astrophysics (WGLA) (2009) (3)
Preface and Dedication (1997) (3)
Looking for relationships (1990) (3)
Formation of S2 in Comets (2000) (3)
Near-UV OH Prompt Emission in the Innermost Coma of 103P/Hartley 2 (2017) (3)
Ultraviolet Exploration of 21 Lutetia by the Alice UV Spectrometer Aboard Rosetta (2010) (3)
Velocities of Material Ejected from Comet Tempel 1 (2006) (3)
HST Observations of C/1995 O1 (Hale-Bopp) (1996) (3)
The NASA EPOXI mission of opportunity to gather ultraprecise photometry of known transiting exoplanets (2008) (3)
Abundances and spatial distributions of H 2 O and CO 2 at comet 9P/Tempel 1 during a natural outburst (2017) (3)
Preliminary Results on HAT-P-4, TrES-3, XO-2, and GJ 436 from the NASA EPOXI Mission (2008) (3)
Physical Properties of the Nucleus of Comet Hale-Bopp (1997) (3)
The future of NASA's missions (2017) (3)
Comet Halley: water production rates near perihelion measured by the Pioneer Venus Ultraviolet Spectrometer. (1986) (2)
15 Years of Comet Photometry: A Comparative Analysis of 80 Comets (1992) (2)
Generation of the IHW Comet Halley CD-ROM Archive (1995) (2)
DIVISIONS I and III / WORKING GROUP: CARTOGRAPHIC COORDINATES AND ROTATIONAL ELEMENTS (2008) (2)
UV Absorption Features of Asteroid 1 Ceres (2009) (2)
Stellar Occultation by Comet 67P/Churyumov-Gerasimenko Observed with the R-Alice Ultraviolet Spectrograph (2017) (2)
Shoemaker-Levy 9 and its impact sites on Jupiter (1994) (2)
The Properties of Comet Tempel 1 as Determined Through the Cometary Ejecta (2007) (2)
IUE observations of comets P/Brorsen-Metcalf and Okazaki-Levy-Rudenko (1990) (2)
Geology of 103P/Hartley 2 and Nature of Source Regions for Jet-Like Outflows (2011) (2)
Flyby Missions to Comets and Return Sample Analysis (2018) (2)
Modeling the Deep Impact Near-nucleus Observations of H2O and CO2 in Comet 9P/Tempel 1 Using Asymmetric Spherical Coupled Escape Probability (2018) (2)
High Resolution Spectroscopy of Comets C/Hyakutake and C/Hale-Bopp in the Near-Ultraviolet and Blue Spectral Range (1996) (2)
Lowell Observatory Cometary Database - Production Rates (2010) (2)
λ4430 Emission by Comet Hyakutake (2013) (2)
The location of the impact point of the Deep Impact Impactor on Comet 9P/Tempel 1 (2013) (2)
Simultaneous imaging of optical CN lines and radio HCN lines in comet Austin (1990) (2)
Rate of Ejection and Velocities of Material Ejected from Comet Tempel 1 after the Deep Impact Collision (2008) (2)
The Sunward Continuum Features of Comet 103P/Hartley 2 (2012) (2)
A Search for Cometary Emissions and Meteor Debris Associated with 3200 1983TB (1985) (2)
Deep Impact Nucleus Characterization - A Status Report (2002) (2)
Modeling H2O and CO2 in Optically Thick Comets Using Asymmetric Spherical Coupled Escape Probability and Application to Comet C/2009 P1 Garradd Observations of CO, H2O, and CO2 (2018) (2)
Deep Impact ejection from Comet 9P/Tempel 1 as a triggered outburst (2009) (2)
Size distribution of icy grains in the coma of 103P/Hartley 2 (2011) (2)
HST Observations of the Nuclei of Comets 45P/Honda-Mrkos-Pajdusakova, 22P/Kopff, and 46P/Wirtanen (1996) (2)
Rosetta mission results pre-perihelion Special feature Shape model , reference system definition , and cartographic mapping standards for comet 67 P / Churyumov-Gerasimenko – Stereo-photogrammetric analysis of Rosetta / OSIRIS image data ? (2015) (2)
Comparison of 9P/Tempel 1's IR Spectra from Deep Impact with Synthetic Models (2007) (2)
The Comet Impact Network Experiment (CINE) (1994) (2)
Velocities and relative amount of material ejected from Comet 9P/Tempel 1 after the Deep Impact collision (2008) (2)
DIVISION I-III / WORKING GROUP CARTOGRAPHIC COORDINATES AND ROTATIONAL ELEMENTS (2008) (2)
Survey of Ensemble Physical Properties of Cometary Nuclei (2006) (2)
NTT observations of SL-9: imaging and spectroscopy (1995) (2)
Volatile Distribution, Heterogeneities, and Extended Source of Water for 103P/Hartley 2 as Observed by the Deep Impact HRI-IR (2012) (2)
The gas production rate of periodic comet d'Arrest (1992) (2)
Observations of the Occultation of BD+8DEG471 by Ceres (1985) (2)
Cometary Volatiles: Icy Grains and Drivers of Activity (2014) (1)
HST Monitoring of Comet P/Shoemaker-Levy 9 (1994) (1)
A Second Ecounter with 9P/Tempel 1: Overview of the Stardust-NExT Results (2012) (1)
Study of a Burst of Ray Generation - Comet 1957 V. (1982) (1)
The Comet Coma Rendezvous Sample Return ( CCRSR ) Mission Concept – The Next Step Beyond Stardust (2009) (1)
Mini-Outbursts in Comets Churyumov-Gerasimenko and Tempel 1 (2016) (1)
Ice and Refractories in the Ambient Coma of 103P/Hartley 2 (2012) (1)
Hubble Space Telescope View of Comet C/Siding Spring during its Close Encounter with Mars (2014) (1)
The Evolution of the Infrared Spectrum of the 1980k Supernova in NGC 6946 (1981) (1)
Astronomy: The comet no one saw (2000) (1)
Multiwavelength Spectroscopy of C/1996 B2 (Hyakutake) (1996) (1)
Accretion of Cometary Nuclei in the Solar Nebula: Boulders, Not Pebbles (2015) (1)
Summer fireworks on comet 67 P 1 Summer fireworks on comet 67 (2018) (1)
The ASTRO-1 Mission and Halley's Comet (1985) (1)
Integral Field Spectroscopy of the B and C Fragments of Comet 73p/ Schwassmann-Wachmann 3 (2006) (1)
Characterization of the Nucleus of 103P/Hartley 2 for the EPOXI Mission (2009) (1)
Diameter, Rotation, and Thermal Properties of Asteroid 4 Vesta (1990) (1)
Formation of Carbon Monoxide in the Near-Nucleus Coma of Comets (2003) (1)
Imaging of the Nucleus of Comet C/1996 B2 (Hyakutake) (1996) (1)
IUE observations of comet Austin (1989c1) (1990) (1)
Natural Outbursts by Comet Tempel 1 (2005) (1)
Comet 103P/Hartley. (2010) (1)
NH, NH 2 and NH 3 Production in Comets (1988) (1)
Upper Limits for Emissions in the Coma of Comet 67P/Churyumov–Gerasimenko near Perihelion as Measured by Rosetta’s Alice Far-UV Spectrograph (2019) (1)
Ice and Refractories in the Inner Coma of 103P/Hartley 2 (2012) (1)
Dust Outflow Velocity of Comet 29P/Schwassmann-Wachmann1 During Outburst (1996) (1)
Observations of CH, NH, and NH2 in Comets P/Hartley 2 (1991 XV) and Shoemaker-Levy (1991a1) Using the Hubble Space Telescope (1993) (1)
Studying the atmosphere of the exoplanet HAT-P7 b via secondary eclipse measurements with EPOXI , Spitzer and Kepler Citation (2009) (1)
A Coordinated Ground and Space Based Study of Comet P/IRAS (1997) (1)
Sulfur Chemistry in Comets Hale-Bopp and Hyakutake (1997) (1)
Deep Impact: Pre-impact geology of the Tempel 1 Nucleus (2005) (1)
UV imaging results of comet C/1995 O1 (Hale-Bopp) and other planetary targets using the Southwest UV Imaging System (SWUIS) aboard the Space Shuttle (1999) (1)
An Overview of Datasets on Small Bodies Available through the Planetary Data System and SOARD (1994) (1)
Cometary cryo-volcanism: Stardust-NExT imaging of outburst locations. (2011) (1)
Observed changes in the physical environment and chemistry in the inner coma of 67P/Churyumov-Gerasimenko (2015) (1)
Peeking Through the Picket Fence: Observing Mars Ozone from the Earth (2003) (1)
The Deep Impact Discovery Mission: Update (2001) (1)
Secular variation of activity in comets 2P/Encke and 9P/Tempel 1 (1995) (1)
Preliminary Results From The NASA EPOXI Mission (2008) (1)
Disk-Resolved Photometry of Cometary Nuclei: Results from DIXI and Stardust-NExT (2012) (1)
On the Evolution of the Dust Emitted by Comet 103P/Hartley 2 and Observed by EPOXI (2011) (1)
Results from the EPOXI and StardustNExT Missions – A Changing View of Comet Volatiles and Activity (2012) (1)
The last big bang? (1995) (1)
Recovery and Characterization of the NASA EPOXI Mission Target Comet 85P/Boethin (2007) (1)
Relative Abundance of OH in Recent Comets. (1981) (1)
BIMA Array Observations of Comet Hale-Bopp: Evidence of Deviations from Spherical Outflow (1998) (1)
Cometary Dust: Narrowband Photometry of 84 Comets (1992) (1)
HST Observations of the Nucleus Fragment 73P/Schwassmann-Wachmann 3-C During its Close Approach to Earth in 2006 (2006) (1)
Chiron: Evidence for historic cometary activity (1991) (1)
Earth as an Extrasolar Planet: The VPL Earth Model Validated Against EPOXI Observations (2009) (1)
The Spin of 103P/Hartley 2 and Its Evolution During the EPOXI/DIXI Encounter (2011) (1)
The impacts of C/Shoemaker-Levy 9 and bioastronomy (1997) (1)
Constraining the Rotational Period for Component C of the Periodic Comet 73P/Schwassmann-Wachmann 3 (2006) (1)
Cometary Science : The Present and Future (2004) (1)
Evolution of the Dust Size Distribution of Comet 67 P / Churyumov – Gerasimenko from 2 . 2 au to Perihelion Journal Item (2016) (1)
Time Variability of Component C of the Fragmented Comet 73P/Schwassmann-Wachmann 3 (2006) (1)
Observations by the Rosetta-Alice Ultraviolet Spectrograph of a Coronal Mass Ejection Impact on Comet 67P/Churyumov-Gerasimenko (2017) (0)
Temporal and Spatial Variability of Lunar Hydration as Observed by the Deep Impact, Part II: The South Pole (2017) (0)
The distribution of gas and ions in the inner coma of 67P/Churyumov-Gerasimenko between 3 AU before and after its perihelion (2016) (0)
Sublimation of icy aggregates in the coma of comet 67 P / Churyumov – Gerasimenko detected with the OSIRIS cameras on board (2016) (0)
First analysis of the size-frequency distribution of boulders ≥ 7m on comet 67P (2016) (0)
Comments on: Fabry Lens. (1972) (0)
A New Model For Extracting Rotational Temperatures for Ethane in Cometary Comae, and Application to Several Comets (2010) (0)
Views of a comet. (1991) (0)
The Rotation of Comet Halley (1990) (0)
Taxonomic Classifications for Comets (1992) (0)
H 2 O and O 2 Absorption-Line Abundances in the Coma of Comet 67P/Churyumov-Gerasimenko Measured by the R-Alice Ultraviolet Spectrograph (2016) (0)
Comet Dust and Activity in the SEPPCoN Survey (2008) (0)
IUE Observations of Comet P/Halley in September 1985 (1985) (0)
2 : A Different Class of Cometary Activity (2011) (0)
Fluorescence equilibrium in the ultraviolet spectra of Comets Seargent (1978 m) and Bradfield (1979 l) (1981) (0)
A Model to Explain the Activity of Comet Levy (1990c) (1991) (0)
CRAF and Periodic Comet Tempel 2 (1991) (0)
The Amateur Observers' Program for 46P/Wirtanen (2016) (0)
CORRELATION OF SOLAR ACTIVITY AND FEATURES IN THE TAIL OF COMET 1964 C (1965) (0)
Characterization of the NASA EPOXI Mission Target Comet Nucleus 103P/Hartley 2 (2008) (0)
Thermal Properties of Deep Impact Target Comet 9P/Tempel 1 (2004) (0)
Comet Halley: a Unique Scientific Lab (1986) (0)
Investigating the surface brightness profiles, ejected mass and speed from the outburst events of comet 67P/Churyumov-Gerasmenko (2016) (0)
GALEX Observations of Comet 9P/Tempel 1 During Deep Impact (2006) (0)
Jets of 67P/Churyumov-Gerasimenko as Observed by Rosetta/OSIRIS (2014) (0)
We calculate theoretical spectra of various emitting species in cometary comae both to investigate physical parameters that are measurable with cometary spectra and to provide fluorescence efficiencies for the derivation of abundances from fluxes. (1990) (0)
Stardust new exploration of Tempel-1 (NExT) (2008) (0)
Preliminary Time Series Photometry From EPOCh Observations Of Transiting Planet Hosts HAT-P-4 And TrES-3 (2008) (0)
Special Report: Chemistry of Comets. (1984) (0)
Analysis of Hybrid Gas–Dust Outbursts Observed at 67P/Churyumov–Gerasimenko (2021) (0)
Space science: NASA bids are not a popularity contest (2012) (0)
Properties of Tail Rays in Comet Halley (1987) (0)
Volatiles on the Lunar Surface as Observed by the Deep Impact Spacecraft (2009) (0)
Formation and Destruction Mechanisms of Carbon Monoxide in Cometary Comae (2004) (0)
Addition of spacecraft data to the IHW comet Halley CD-ROM archive (1997) (0)
Rosetta mission results pre-perihelion Special feature Morphology and dynamics of the jets of comet 67 P / Churyumov-Gerasimenko : Early-phase development ? (2015) (0)
Diurnal and seasonal variations of gas emissions in the inner coma of comet 67P/Churyumov-Gerasimenko observed with OSIRIS/Rosetta (2017) (0)
Jets and sources of activity on comet 67P/Churyumov-Gerasimenko (2015) (0)
C2 DENSITIES IN COMET MRKOS (1955 III) (1964) (0)
Direct measurement of grain acceleration in the near-surface coma of comet 67P/Churyumov-Gerasimenko with Rosetta/OSIRIS (2016) (0)
Spatial Color Variations in the Dust Coma of Comet P/Halley (1988) (0)
Morphological Forms of Cometary Activity (2014) (0)
Long-term monitoring of comet 67 P / Churyumov – Gerasimenko ’ s jets with OSIRIS onboard (2017) (0)
The Complex Spin State of 103P/Hartley 2 and its Evolution Around the Time of the DIXI Encounter (2012) (0)
A Glimpse into the Underworld: Active Pits on 67P (2015) (0)
Periodic Comet Encke (1977) (0)
Working Group on Definition of Planet (2005) (0)
Cometary Volatiles and Origins (2012) (0)
A Simple Method to Determine λ from Isothermal Capacitance Measurements (2017) (0)
DIVISION III / WG: COMMITTEE SMALL BODIES NOMENCLATURE (2007) (0)
Preface and Dedication (1997) (0)
Dynamical and Spectral Modeling of Observations of P/Shoemaker-Levy 9: Implications for the Emission History and Heterogenity of the Nuclei (1995) (0)
A Possible Impact Between the Shoemaker-Levy Q1 and Q2 Events? More Evidence For (and Against) (1995) (0)
The Detection and Location of Icy Particles Surrounding Hartley 2 (2011) (0)
Working Group on Near Earth Objects: (Groupe De Travail Pour les Objets Proches De La Terre) (2002) (0)
Solar Energetic Proton Events as the Source of the Transient Exosphere of Ceres (2017) (0)
ADDENDUM (1976) (0)
Rosetta mission results pre-perihelion Special feature Orbital elements of the material surrounding comet 67 P / Churyumov-Gerasimenko (2015) (0)
The First HST UV Spectroscopic Observation of Chiron in Outburst (1997) (0)
Deep Impact and the Interior of Cometary Nuclei (1998) (0)
Gary W. Kronk: Cometography: A Catalog of Comets. Volume 4: 1933–1959 (2009) (0)
Rosetta mission results pre-perihelion Special feature Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67 P / Churyumov-Gerasimenko (2015) (0)
The combined SOHO-STEREO dataset: Simultaneous observations of comets from multiple vantage points (2014) (0)
An Update on the Problem of Small Comets (1998) (0)
Activity in Comet Tempel 1: Linking the Coma and the Nucleus’ Surface (2009) (0)
POLARIZATION OBSERVATIONS OF THE lambda4430 DIFFUSE INTERSTELLAR ABSORPTION FEATURE. (1972) (0)
Latitudinal Distribution and Seasonal Behavior of Mars Ozone from Infrared Heterodyne Spectroscopy (2004) (0)
Rosetta mission results pre-perihelion Special feature Size-frequency distribution of boulders ≥ 7 m on comet 67 P / Churyumov-Gerasimenko (2015) (0)
Comet Observations [245 Spitzer Space Telescope] (2008) (0)
CN Coma Morphology of Comet 103P/Hartley 2 During the 2010 Apparition (2011) (0)
Measurement of the Gas Environment in the Inner Coma of Comet 67P/Churyumov-Gerasimenko with the Alice Far-ultraviolet Spectrograph on Rosetta (2014) (0)
Lightcurves and revised masses of the large particles at comet 103P/Hartley 2 (2015) (0)
The study of comets, part 1. [conference on photometry and spectrum analysis of Kohoutek comet and comet tails] (1976) (0)
Comet 67P/Churyumov-Gerasimenko’s Increasing Atomic Sulfur Abundance Observed by Rosetta Alice (2015) (0)
The Far-Ultraviolet Spectrum of Mars Observed during the Rosetta Swingby of Mars in February 2007 (2007) (0)
The Deep Impact Discovery Mission (2002) (0)
Velocities and Relative Amounts of Material Ejected After the Collision of DI Impactor with Comet 9P/Tempel 1 (2008) (0)
Ultraviolet emission from CG's coma: fluorescence versus electron-impact excitation (2015) (0)
The 13 November 1984 occultation of BD +08 deg 0471 by (1) Ceres (1986) (0)
Velocities of Material Ejected After the Deep Impact Collision (2008) (0)
The Nucleus of Comet 67P/Churyumov-Gerasimenko : a New Case of Contact Binary ? (2014) (0)
Spatially Resolved Far-Ultraviolet Surface Reflectance of Comet 67P/Churyumov-Gerasimenko as Observed by Rosetta Alice (2014) (0)
The Diana Discovery Mission: A Solar Electric Propulsion Mission to the Moon and a Comet (1995) (0)
Optical Depth and Albedo of the Deep Impact Ejecta in the First Minutes (2008) (0)
SMACS: Small Missions to Asteroids and Comets (1993) (0)
New Insights of Comets from the EPOXI Mission (2013) (0)
New Improvements in Modeling Comets with Optically Thick Comae (2009) (0)
Infrared Observations of the Dust in Comet Hale-Bopp (1997) (0)
Rosetta mission results pre-perihelion Special feature Redistribution of particles across the nucleus of comet 67 P / Churyumov-Gerasimenko (2015) (0)
IUE Observations of Comet Bradfield 1979L (1980) (0)
Long Time Orbital Evolution of Dust from Comet Encke (1989) (0)
DIVISION III: PLANETARY SYSTEM SCIENCES (2007) (0)
Introduction: Low-budget extended missions to comets (2013) (0)
Visible-Wavelength Survey of Jupiter-Family Cometary Nuclei as Part of SEPPCoN (2012) (0)
Photometry of the Kreutz Comets 1996-2005 (2008) (0)
Committee for Small Body Nomenclature (2005) (0)
Deep Impact and Deflection of NEOs (2010) (0)
Division III: Planetary Systems Sciences (Sciences Des Systemes Planetaires) (2000) (0)
Ja n 20 06 A BIMA ARRAY SURVEY OF MOLECULES IN COMETS LINEAR ( C / 2002 T 7 ) AND NEAT ( C / 2001 Q 4 ) (2006) (0)
Comet Jacobini-Zinner and the Ice Mission (1985) (0)
OBSERVATIONS OF lambda4430 IN REFLECTION NEBULAE. (1971) (0)
Distant Activity of Comet ISON (2012) (0)
Near-IR Observations of the Deep Impact Encounter with Comet 9P/Tempel 1 (2005) (0)
Light Curves of Kreutz Comets (2005) (0)
Ion morphology in the inner tail of Comet P/Halley (1986) (0)
Photometric Variations on Comet 81P/Wild 2 from Stardust Data (2008) (0)
Deep Impact's Medium Resolution Imaging of the Coma and Nucleus of Comet Tempel 1: Before, During and After Impact (2005) (0)
The Characteristics and Evolution of the Dust Coma of Comet C/2012 S1 (ISON) (2014) (0)
Automatic Recognition of Cosmic Rays at Deep Impact CCDs (2005) (0)
The rotational state of the nucleus of comet 9P/Tempel 1 (2005) (0)
The Shape and Geological Features of Comet 103P/Hartley 2 (2011) (0)
Multi-Year Program to Study Comets as Targets of Opportunity (1987) (0)
The collision of Comet Shoemaker-Levy 9 into Jupiter. Proceedings. IAU Colloquium 156, Baltimore, MD (USA), 9 - 12 May 1995. (1996) (0)
C2, CN and dust in Comet Wilson (1987VII) (1993) (0)
Albedo and color variegations on 67/P Churyumov-Gerasimenko as observed by OSIRIS/Rosetta (2014) (0)
Imaging the Gas from 67P/Churyumov-Gerasimenko (2015) (0)
Deep Impact Documentation Set V1.0 (2010) (0)
Swift Observations of the Ejecta of Asteroid 596 Scheila (2011) (0)
On So In Comets (1999) (0)
The Rotation of P/Halley (1989) (0)
High Resolution Spectra of CH, CO 2+ , C 3 and NH 2 in Comet Austin (1991) (0)
Optical Depth Effects in Cometary Emission Lines - CO (2007) (0)
Rosetta mission results pre-perihelion Special feature Geomorphology and spectrophotometry of Philae ’ s landing site on comet 67 P / Churyumov-Gerasimenko (2015) (0)
Rosetta mission results pre-perihelion Special feature Rotating dust particles in the coma of comet 67 P / Churyumov-Gerasimenko (2015) (0)
Multiwavelength Observations of the Nucleus and Coma of Comet Hale-Bopp (1997) (0)
D/H and the Origin of Earth's Water (2015) (0)
THREATS FROM SPACE: A REVIEW OF PRIVATE AND INTERNATIONAL EFFORTS TO TRACK AND MITIGATE ASTEROIDS AND METEORS (2013) (0)
Rotational Variation of Outgassing Morphology in 67P/Churyumov-Gerasimenko (2015) (0)
The Geomorphology of Comet Churymov-Gerasimenko As Revealed By Rosetta/Osiris: Implicationsfor Past Collisional Evolution (2014) (0)
DEEP IMPACT MISSION: LOOKING BENEATH THE SURFACE OF A COMETARY NUCLEUS (2013) (0)
Coordinated Laboratory Studies of Aubrite Meteorites for Rosetta flyby of Asteroid 2867 Steins (2008) (0)
Return to Comet Tempel 1: Results from Stardust-NExT (2011) (0)
Rosetta mission results pre-perihelion Special feature Large-scale dust jets in the coma of 67 P / Churyumov-Gerasimenko as seen by the OSIRIS instrument onboard Rosetta (2015) (0)
Thermal Properties, Size Distribution, and Albedo Distribution of Jupiter-Family Comets (2007) (0)
DIVISION III / WORKING GROUP COMMITTEE ON SMALL BODIES NOMENCLATURE (2008) (0)
DIVISION III: COMMITTEE ON SMALL BODY NOMENCLATURE (2010) (0)
BIMA Array Spectral Line Observations of Comet Hale-Bopp (C/1995 O1) (1999) (0)
Hartley 2's Puzzling Gas Anomaly (2011) (0)
Results from the SEPPCoN Survey of Jupiter-Family Comets (2010) (0)
Pre-perihelion characterization of Comet C/2012 S1 (ISON) (2013) (0)
Small Solar System Bodies — Products and Standards (2016) (0)
Spatial Distribution and Rotational Variations of Comet 103/P Hartley 2’s Volatiles (2013) (0)
Committee on Small Body Nomenclature: (Comite Pour La Nomenclature Des Petits Corps Celestes) (2002) (0)
Jets in Comet Tempel 1: A Link Beween the Coma and the Nucleus (2005) (0)
A SIMPLE METHOD OF DERIVING EQUATORIAL COORDINATES FROM ASTRONOMICAL PHOTOGRAPHS (1977) (0)
IUE Observations of Comets (1988) (0)
Detection of Shells in the C 2 Images of Comet P/Halley (1993) (0)
SEPPCoN: Comet Dust and Activity at Moderate Heliocentric Distances as Observed with Spitzer (2007) (0)
Measurement of the Gas Environment of comet 67P/Churyumov-Gerasimenko with the Alice Far-ultraviolet Spectrograph on Rosetta (2014) (0)
A Dip Short Nomogram (1974) (0)
Visible-wavelength Observations of Jupiter-family Comet Nuclei as Part of Seppcon. (2010) (0)
Results from the Umd Physical Properties of Comets Survey (2003) (0)
Deep Impact and Related Missions (2015) (0)
Expectations for Spectroscopy of the Nucleus of Tempel 1 from Deep Impact (2004) (0)
Far-ultraviolet spectroscopy from inside the coma of comet 67P/Churyumov-Gerasimenko with Alice on Rosetta (2015) (0)
The NASA/IRTF SL9 Observing Campaign (1994) (0)
Phase Angle Effects on Sungrazing Comets Observed by SOHO (2008) (0)
Upcoming Far-Ultraviolet Observations of 2867 Steins and 67P/Churyumov-Gerasimenko with Rosetta Alice (2008) (0)
Velocities of Dust Particles Ejected from Comet Tempel 1 (2006) (0)
Long-term survival of surface water ice on comet 67 (2017) (0)
Production Rates and Distribution of 103P/Hartley 2's Gaseous Coma (2011) (0)
Maximizing the Scientific Return of Low Cost Planetary Missions Using Solar Electric Propulsion(abstract) (1994) (0)
Detection of outgassing from Ceres (1992) (0)
Sungrazing Comet Potpourri: Dust Studies of SOHO/STEREO Comets and an Update on ISON (C/2012 S1) (2013) (0)
IRTF Studies of the Impacts of Comet P/Shoemaker-Levy 9 in to Jupiter (1995) (0)
Water Ice in Comets: A Comparative Study (2013) (0)
COMPOSITIONAL COMPARISON OF NATURAL OUTBURSTS FROM COMET 9P/TEMPEL 1 (2008) (0)
Fragmented comet 73P/Schwassmann-Wachmann 3: A rare close approach (2006) (0)
Comet 67P/Churyumov-Gerasimenko - First Science Results by Rosetta/OSIRIS (2014) (0)
The Origin of C_2 in Comets (1996) (0)
Modeling the ejecta cloud in the first seconds after Deep Impact (2014) (0)
Water Production Rate of Comet P/d'Arrest (1982 VII) at its 1982 Apparition (1991) (0)
Overview of Observations of the Impacts (1995) (0)
Investigating Ultraviolet Excitation Processes in 67P/Churyumov-Gerasimenko (2015) (0)
Recreating the Deep Impact's Ejecta Cloud: Estimating Optical Depth, Albedo, and Composition Using SPICE and the Shape Model (2009) (0)
Understanding the Kreutz Sungrazing Comets (2006) (0)
Rosetta-Alice Observations of the Evolution of the CO Coma of Comet 67P/Churyumov-Gerasimenko During Perihelion (2015) (0)
Multivariate statistical analysis of OSIRIS / Rosetta spectrophotometric data of comet 67 P / Churyumov-Gerasimenko (2017) (0)
COORDINATED PROGRAMS FOR COMET HALLEY (1986) (0)
The comparison of the photometric properties of comet 9P/Tempel 1 with other comets and asteroids (2006) (0)
Deep Impact at Comet Tempel 1: Part 2 (2007) (0)
The Deep Impact Earth-Based Observing Campaign (2004) (0)
Unanticipated Physical Processes in ALICE Spectra of 67P/Churyumov-Gerasimenko (2015) (0)
Rosetta mission results pre-perihelion Special feature Insolation , erosion , and morphology of comet 67 P / Churyumov-Gerasimenko (2015) (0)
Far-Ultraviolet Surface Reflectance of Comet 67P/Churyumov-Gerasimenko as Observed by the Alice Spectrograph on Rosetta (2014) (0)
Spatial Distribution of Ultraviolet Emission from Cometary Activity at 67P/Churyumov-Gerasimenko (2021) (0)
C/2012 S1 (ISON) Curve of light corrected for phase effects (2014) (0)
A Hundred Comets: The Visual-Wavelength Observations of the Survey of Ensemble Physical Properties of Cometary Nuclei (SEPPCoN) (2010) (0)
Imaging C/2013 A1 (Siding Spring) with the Hubble Space Telescope (2014) (0)
Comet Hartley 2: A Different Class of Cometary Activity (2011) (0)
CO from 67P/C-G: DIurnal and Seasonal Variations (2016) (0)
High Resolution Spectroscopy of Comet C/1996 B2 (Hyakutake) in the Near-Ultraviolet and Blue Spectral Range (1996) (0)
BIMA ARRAY MOLECULAR SEARCHES IN COMET HALE-BOPP(C/1995 O1) (1999) (0)
EPOXI: Deep Impact Gets Glued to Extra-Solar Planets (2008) (0)
Inter-Commission Working Group on the Prevention of Interplanetary Pollution (1997) (0)
Was there a K Flash (1995) (0)
Volatile Abundance and Distribution in the Tempel 1 Ejecta Cloud (2015) (0)
Comparative planetology with an earth perspective : proceedings of the First International Conference held in Pasadena, California, June 6-8, 1994 (1995) (0)

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