Gary Ferland

Q: What Schools Are Affiliated With Gary Ferland

Gary Ferland is affiliated with the following schools: University of California, Berkeley, University of Texas at Austin, University of Kentucky, Ohio State University, University of Toronto

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Gary Ferland

Physics

#2600

World Rank

#3812

Historical Rank

#1013

USA Rank

Astrophysics

#138

World Rank

#152

Historical Rank

#57

USA Rank

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Physics

Gary Ferland's Degrees

PhD Physics University of California, Berkeley
Bachelors Physics University of California, Berkeley

Why Is Gary Ferland Influential?

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According to Wikipedia, Gary Joseph Ferland is an American astrophysicist. He is a professor of Physics and Astronomy at The University of Kentucky. He is best known for developing the astrophysical simulation code Cloudy, for his work on physical processes in ionized plasmas, and investigations of the chemical evolution of the cosmos.

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Gary Ferland'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

Astrophysics of Gaseous Nebulae and Active Galactic Nuclei (1989) (5799)
CLOUDY 90: Numerical Simulation of Plasmas and Their Spectra (1998) (1852)
Atomic data for astrophysics. II. New analytic fits for photoionization cross sections of atoms and ions (1996) (1251)
Hazy, A Brief Introduction to Cloudy 96 (1983) (651)
THE 2013 RELEASE OF CLOUDY (2013) (472)
Elemental Abundances in Quasistellar Objects: Star Formation and Galactic Nuclear Evolution at High Redshifts (1999) (312)
What heats the hot phase in active nuclei (1987) (309)
Atomic data for astrophysics. I. Radiative recombination rates for H-like, He-like, Li-like, and Na-like ions over a broad range of temperature (1995) (292)
Atomic Data for Permitted Resonance Lines of Atoms and Ions from H to Si, and S, Ar, Ca, and Fe (1996) (275)
The Chemical Evolution of QSOs and the Implications for Cosmology and Galaxy Formation (1993) (274)
Physical conditions in the Orion Nebula and an assessment of its helium abundance (1991) (270)
The 2017 release of CLOUDY (2017) (258)
Are there any shock-heated galaxies? (1982) (249)
Locally Optimally Emitting Clouds and the Origin of Quasar Emission Lines (1995) (245)
A photon dominated region code comparison study (2007) (227)
ANISOTROPIC LINE EMISSION AND THE GEOMETRY OF THE BROAD-LINE REGION IN ACTIVE GALACTIC NUCLEI (1992) (183)
An Atlas of Computed Equivalent Widths of Quasar Broad Emission Lines (1996) (179)
The VLT-UVES survey for molecular hydrogen in high-redshift damped Lyman α systems: physical conditions in the neutral gas (2005) (148)
The Hubble Space Telescope Sample of Radio-loud Quasars: Ultraviolet Spectra of the First 31 Quasars (1995) (141)
Quantitative Spectroscopy of Photoionized Clouds (2003) (140)
Spectroscopic Challenges of Photoionized Plasmas (2001) (134)
A PDR-Code Comparison Study (2007) (133)
Collisional heating as the origin of filament emission in galaxy clusters (2008) (132)
Rate coefficients for charge transfer between hydrogen and the first 30 elements (1996) (131)
Metallicities and Abundance Ratios from Quasar Broad Emission Lines (2001) (131)
Numerical Simulations of Fe II Emission Spectra (1999) (119)
Small Dense Broad-Line Regions in Active Nuclei (1989) (117)
The Origin of Fe II Emission in Active Galactic Nuclei (2004) (111)
Molecular Hydrogen in Star-forming Regions: Implementation of its Microphysics in CLOUDY (2005) (111)
Collisional Effects in He I: An Observational Analysis (1995) (104)
IUE spectra and a resulting model of Seyfert 2 galaxies (1986) (102)
The H II Region/PDR Connection: Self-consistent Calculations of Physical Conditions in Star-forming Regions (2005) (98)
The age and chemical evolution of high-redshift QSOs (1992) (97)
The Energy Source of the Filaments Around the Giant Galaxy NGC 1275 (2011) (90)
A Magnetically Supported Photodissociation Region in M17 (2006) (90)
Erratum: 'Improved He I emissivities in the Case B approximation' (2012) (83)
Grain size distributions and photoelectric heating in ionized media (2004) (82)
Implications of Ca II emission for physical conditions in the broad-line region of active galactic nuclei (1989) (80)
The PG X-Ray QSO Sample: Links between the Ultraviolet-X-Ray Continuum and Emission Lines (1999) (80)
Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548 (2017) (79)
Swift Monitoring of NGC 4151: Evidence for a Second X-Ray/UV Reprocessing (2017) (77)
STRUCTURE AND FEEDBACK IN 30 DORADUS. II. STRUCTURE AND CHEMICAL ABUNDANCES (2011) (76)
ION-BY-ION COOLING EFFICIENCIES (2011) (75)
HIGH-EXCITATION EMISSION LINES NEAR ETA CARINAE, AND ITS LIKELY COMPANION STAR (2009) (72)
High Metal Enrichments in Luminous Quasars (1996) (71)
Discovery of Atomic and Molecular Mid-Infrared Emission Lines in Off-Nuclear Regions of NGC 1275 and NGC 4696 with the Spitzer Space Telescope (2007) (71)
Optically thin broad-line clouds in active galactic nuclei (1995) (70)
Theoretical He I Emissivities in the Case B Approximation (2005) (69)
Very High Density Clumps and Outflowing Winds in QSO Broad-Line Regions (1996) (68)
Quasars as Cosmological Probes: The Ionizing Continuum, Gas Metallicity, and the Wλ-L Relation (1998) (68)
HYDROGENIC EMISSION AND RECOMBINATION COEFFICIENTS FOR A WIDE RANGE OF TEMPERATURE AND WAVELENGTH. (1980) (68)
Radiative equilibrium of high-density clouds with application to active galactic nucleus continua (1988) (68)
Physical Conditions of the Coronal Line Region in Seyfert Galaxies (1996) (67)
Do the Broad Emission Line Clouds See the Same Continuum That We See? (1997) (66)
The First Swift Intensive AGN Accretion Disk Reverberation Mapping Survey (2018) (65)
The Origin of Fe II Emission in AGN (2004) (64)
Electron-impact excitation of O II fine-structure levels. (2009) (63)
ORION’S BAR: PHYSICAL CONDITIONS ACROSS THE DEFINITIVE H+/H0/H2 INTERFACE (2008) (62)
High-Resolution Spectroscopy of Faint Emission Lines in the Orion Nebula (2000) (62)
IMPLICATIONS OF INFALLING Fe ii-EMITTING CLOUDS IN ACTIVE GALACTIC NUCLEI: ANISOTROPIC PROPERTIES (2009) (61)
THEORETICAL HYDROGEN-LINE RATIOS FOR THE NARROW-LINE REGIONS OF ACTIVE GALACTIC NUCLEI (1984) (61)
He I Emission in the Orion Nebula and Implications for Primordial Helium Abundance (2006) (60)
The origin of molecular hydrogen emission in cooling‐flow filaments★ (2008) (60)
THE HUBBLE-SPACE-TELESCOPE SAMPLE OF RADIO-LOUD QUASARS - THE LY-ALPHA/H-BETA RATIO (1995) (57)
The Geometry and Kinematics of the Broad-Line Region in NGC 5548 from HST and IUE Observations (1995) (55)
Heavy element abundances of Nova Cygni 1975. (1978) (54)
Physical Conditions in the Orion H ii Region (1998) (53)
The Primordial Helium Abundance: Toward Understanding and Removing the Cosmic Scatter in the dY/dZ Relation (2000) (53)
The line continuum luminosity ratio in active galactic nuclei - or, on the 'Baldwin effect' (1984) (52)
Ubiquitous cold and massive filaments in cool core clusters (2019) (50)
EVIDENCE FOR PHOTOIONIZATION-DRIVEN BROAD ABSORPTION LINE VARIABILITY (2015) (50)
Herschel photometry of brightest cluster galaxies in cooling flow clusters (2010) (49)
Chemical Abundances in Broad Emission Line Regions: The “Nitrogen-loud” Quasi-Stellar Object Q0353–383 (2002) (48)
The Origin of the Coronal Lines in Seyfert Galaxies (1989) (47)
THE THREE-DIMENSIONAL DYNAMIC STRUCTURE OF THE INNER ORION NEBULA (2008) (47)
Physical Conditions in Orion’s Veil (2004) (47)
The physical conditions within dense cold clouds in cooling flows - II (1994) (46)
Accurate determination of the free-free Gaunt factor; I - non-relativistic Gaunt factors (2014) (45)
The impact of recent advances in laboratory astrophysics on our understanding of the cosmos (2011) (45)
Continuum Pumping of [Fe II] in the Orion Nebula (2000) (44)
SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. IV. ANOMALOUS BEHAVIOR OF THE BROAD ULTRAVIOLET EMISSION LINES IN NGC 5548 (2016) (44)
The Mass of Quasar Broad Emission Line Regions (2002) (44)
A Multiwavelength Study of Nova QU Vulpeculae 1984 (1992) (44)
Optically thin thermal emission as the origin of the big bump in the spectra of active galactic nuclei (1990) (43)
Herschel observations of the Centaurus cluster – the dynamics of cold gas in a cool core (2011) (42)
The narrow-line region of high-luminosity active galactic nuclei (1993) (42)
Application of line transfer calculations to active nuclei and novae (1979) (42)
Temperature variations from Hubble Space Telescope spectroscopy of the Orion Nebula (2002) (41)
An accretion event in the Seyfert galaxy NGC 5548 (1986) (41)
The Narrow-Line Region in the Seyfert 2 Galaxy NGC 3393 (2000) (40)
Self-Consistent Dynamic Models of Steady Ionization Fronts. I. Weak-D and Weak-R Fronts (2005) (40)
Temperature Fluctuations in Photoionized Nebulae (1995) (40)
State-to-state rotational transitions in H2+H2 collisions at low temperatures. (2006) (40)
Cold gas dynamics in Hydra-A: evidence for a rotating disc (2013) (40)
THE [NE III]-[O II] SPECTRUM AS AN IONIZATION INDICATOR IN NEBULAE (1991) (40)
Spitzer reveals what's behind Orion's Bar (2009) (40)
The Effects of Low-Temperature Dielectronic Recombination on the Relative Populations of the Fe M-Shell States (2003) (39)
Properties of warm absorbers in active galaxies: a systematic stability curve analysis (2008) (39)
Herschel observations of extended atomic gas in the core of the Perseus cluster (2012) (38)
A Multi-Instrument Study of the Helix Nebula Knots with the Hubble Space Telescope, (2005) (36)
Physical Conditions in Orion’s Veil. II. A Multicomponent Study of the Line of Sight toward the Trapezium (2005) (36)
The Mystery of the Missing Boundary Layer (1982) (36)
Temperature variations from Hubble Space Telescope imagery and spectroscopy of NGC 7009 (2002) (36)
Cosmic rays and the emission line regions of active galactic nuclei (1984) (36)
Bowen Fluoresence and He II Lines in Active Galaxies and Gaseous Nebulae (1985) (35)
Physical Conditions in Low-Ionization Regions of the Orion Nebula (1996) (35)
Evidence for highly processed material ejected from Abell 30 (1980) (34)
Luminosity Indicators in Dusty Photoionized Environments (1998) (34)
The Structure of the Homunculus. II. Modeling the Physical Conditions in η Carinae’s Molecular Shell (2006) (33)
J-Resolved He I Emission Predictions in the Low-Density Limit (2005) (33)
Observational Constraints on the Internal Velocity Field of Quasar Emission-Line Clouds (2000) (33)
Revisiting He-like X-Ray Emission-Line Plasma Diagnostics (2007) (33)
Broad Line Region Clouds and the Absorbing Material in NGC 4151 (1982) (32)
LONG-TERM SPECTRAL EVOLUTION OF TIDAL DISRUPTION CANDIDATES SELECTED BY STRONG CORONAL LINES (2013) (32)
A SEA CHANGE IN ETA CARINAE, (2010) (32)
The Effects of Charge Transfer on the Thermal Equilibrium of Photoionized Nebulae (1999) (32)
Line-driven radiative outflows in luminous quasars (2014) (31)
STRUCTURE AND FEEDBACK IN 30 DORADUS. I. OBSERVATIONS (2010) (31)
Nebular Properties and the Ionizing Radiation Field in the Galactic Center (1994) (31)
Herschel observations of FIR emission lines in brightest cluster galaxies (2010) (31)
[Fe IV] in the Orion Nebula (1997) (30)
On the Enhanced Cosmic-Ray Ionization Rate in the Diffuse Cloud toward ζ Persei (2007) (30)
The Chemical Enrichment of Gas in Broad Absorption Line QSOs: Rapid Star Formation in the Early History of Galaxies (1996) (30)
IUE Observations of DQ Herculis and its Nebula, and the Nature of the Cold Nova Shells (1984) (30)
THE CURIOUS CONUNDRUM REGARDING SULFUR ABUNDANCES IN PLANETARY NEBULAE (2012) (29)
Grains in ionized nebulae: Spectral line diagnostics (1995) (29)
Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the Ultraviolet Anomaly in NGC 5548 with X-Ray Spectroscopy (2017) (28)
Carbon monoxide emission and the eta carinae stage of Nova NQ Vulpeculae (1979) (27)
Determination of the Physical Conditions of the Knots in the Helix Nebula from Optical and Infrared Observations (2007) (27)
ROTATIONALLY WARM MOLECULAR HYDROGEN IN THE ORION BAR (2009) (27)
CRITICAL DIFFERENCES AND CLUES IN ETA CAR'S 2009 EVENT, (2011) (27)
Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum (2019) (27)
PHYSICAL CONDITIONS IN BARNARD’S LOOP, COMPONENTS OF THE ORION-ERIDANUS BUBBLE, AND IMPLICATIONS FOR THE WARM IONIZED MEDIUM COMPONENT OF THE INTERSTELLAR MEDIUM (2011) (27)
Magnetic Confinement, Magnetohydrodynamic Waves and Smooth Line Profiles in Active Galactic Nuclei (2000) (26)
The Lexington Benchmarks for Numerical Simulations of Nebulae (2016) (26)
The Hydrogen Line Spectra of Narrow-Line Radio Galaxies (1985) (26)
Temperature Variations and N/O in the Orion Nebula from HST Observations (1998) (26)
SUPPRESSION OF DIELECTRONIC RECOMBINATION DUE TO FINITE DENSITY EFFECTS (2013) (26)
Radiation pressure and emission clouds around active galactic nuclei (1986) (26)
Interpreting the Ionization Sequence in AGN Emission-Line Spectra (2013) (25)
The Location and Kinematics of the Coronal-Line Emitting Regions in Active Galactic Nuclei (2008) (25)
Sensitivity of PDR Calculations to Microphysical Details (2008) (25)
STAR FORMATION IN SELF-GRAVITATING DISKS IN ACTIVE GALACTIC NUCLEI. I. METALLICITY GRADIENTS IN BROAD-LINE REGIONS (2011) (25)
STAR FORMATION IN SELF-GRAVITATING DISKS IN ACTIVE GALACTIC NUCLEI. II. EPISODIC FORMATION OF BROAD-LINE REGIONS (2012) (25)
Rotational Quenching Rate Coefficients for H2 in Collisions with H2 from 2 to 10,000 K (2008) (25)
THE INTERMEDIATE-LINE REGION IN ACTIVE GALACTIC NUCLEI (2016) (24)
ATOMIC DATA AND SPECTRAL MODEL FOR Fe II (2010) (24)
He II Reverberation in Active Galactic Nucleus Spectra (2002) (24)
Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548 (2020) (24)
Uncertainties in theoretical He i emissivities: H ii regions, primordial abundance and cosmological recombination (2008) (23)
N III line emission in planetary nebulae : continuum fluorescence (1992) (23)
Asymmetries of the emission lines of QSOs, Seyfert galaxies, and Novae (1979) (23)
Accurate Hydrogen Spectral Simulations with a Compact Model Atom (1996) (23)
TWO-COMPONENT STRUCTURE OF THE Hβ BROAD-LINE REGION IN QUASARS. I. EVIDENCE FROM SPECTRAL PRINCIPAL COMPONENT ANALYSIS (2012) (23)
Space Telescope and Optical Reverberation Mapping Project. X. Understanding the Absorption-line Holiday in NGC 5548 (2019) (22)
Atomic Data Revisions for Transitions Relevant to Observations of Interstellar, Circumgalactic, and Intergalactic Matter (2017) (22)
STUDIES OF NGC 6720 WITH CALIBRATED HST/WFC3 EMISSION-LINE FILTER IMAGES. I. STRUCTURE AND EVOLUTION , (2013) (22)
The Planetary Nebula A39: An Observational Benchmark for Numerical Modeling of Photoionized Plasmas (2001) (22)
Properties of Dust Grains in Planetary Nebulae. I. The Ionized Region of NGC 6445 (1999) (22)
Hubble Space Telescope/Faint Object Spectrograph Spectroscopy of Spatially Resolved Narrow-Line Regions in the Seyfert 2 Galaxies NGC 2110 and NGC 5929 (1999) (21)
Fractal Quasar Clouds (2001) (21)
FLUORESCENT EXCITATION OF BALMER LINES IN GASEOUS NEBULAE: case D (2008) (21)
Classification and Analysis of Emission-Line Galaxies Using Mean Field Independent Component Analysis (2013) (21)
Physical Conditions in the Interstellar Medium toward HD 185418 (2005) (21)
ATOMIC DATA FOR S ii—TOWARD BETTER DIAGNOSTICS OF CHEMICAL EVOLUTION IN HIGH-REDSHIFT GALAXIES (2013) (20)
Hydrogen Emission from Low Column Density Gas: Case C (1999) (20)
Merged Ionization/Dissociation Fronts in Planetary Nebulae (2007) (20)
A SURVEY OF MOLECULAR HYDROGEN IN THE CRAB NEBULA (2011) (20)
STOUT: CLOUDY’S ATOMIC AND MOLECULAR DATABASE (2015) (20)
Collisional effects in the helium triplets, and the primordial helium abundance (1986) (20)
PUMPING UP THE [N i] NEBULAR LINES (2012) (20)
The influence of soft spectral components on the structure and stability of warm absorbers in AGN (2012) (19)
Constraining cold accretion on to supermassive black holes: molecular gas in the cores of eight brightest cluster galaxies revealed by joint CO and CN absorption (2019) (19)
State-of-the-art AGN SEDs for photoionization models: BLR predictions confront the observations (2020) (19)
Hot gas and the origin of the nebular continuum in novae (1994) (19)
12C/13C Ratio in Planetary Nebulae from the IUE Archives (2004) (18)
An X-ray model for the nebula of nova DQ Herculis 1934 (1979) (18)
Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the UV anomaly in NGC 5548 with X-Ray Spectroscopy (2017) (18)
Radiative cooling in collisionally ionized and photoionized plasmas (2012) (18)
AGN STORM 2. I. First results: A Change in the Weather of Mrk 817 (2021) (18)
PW Vulpeculae: a nova with nearly solar abundances (1991) (18)
A Cloudy/XSPEC Interface (2006) (18)
Charge Transfer between Neutral Atoms and Highly Ionized Species: Implications for ISO Observations (1997) (18)
A Wind-based Unification Model for NGC 5548: Spectral Holidays, Nondisk Emission, and Implications for Changing-look Quasars (2019) (18)
Towards converged electron-impact excitation calculations of low-lying transitions in Fe ii (2018) (18)
H2 temperatures in the Crab Nebula (2011) (17)
HST imaging of the dusty filaments and nucleus swirl in NGC4696 at the centre of the Centaurus Cluster (2016) (17)
Dielectronic recombination and stability of warm gas in active galactic nuclei (2007) (17)
A deep spectroscopic study of the filamentary nebulosity in NGC 4696, the brightest cluster galaxy in the Centaurus cluster (2011) (17)
Broad NE VIII λ744 Emission from the Quasar PG 1148+549 (1995) (17)
Radiation Pressure and the Stability of Broad-Line Region Clouds (1984) (16)
ATOMIC DATA FOR ZN II: IMPROVING SPECTRAL DIAGNOSTICS OF CHEMICAL EVOLUTION IN HIGH-REDSHIFT GALAXIES (2015) (16)
The origin of N III lambda 990 and C III lambda 977 emission in AGN narrow-line region gas (1995) (16)
THE NATURE AND FREQUENCY OF OUTFLOWS FROM STARS IN THE CENTRAL ORION NEBULA CLUSTER (2015) (16)
Which Stars Are Ionizing the Orion Nebula? (2017) (16)
Relativistic allowed and forbidden transition probabilities for fluorine-like Fe XVIII (2004) (16)
The Ultraviolet-Optical Albedo of Broad Emission Line Clouds (1997) (16)
Intensive disc-reverberation mapping of Fairall 9: first year of Swift and LCO monitoring (2020) (16)
The nature of the H2-emitting gas in the Crab nebula (2012) (15)
Optically Thick [O I] and [C II] Emission toward NGC 6334A (2007) (14)
Structure and physical conditions in the Huygens region of the Orion nebula (2016) (14)
Improved Fe ii Emission-line Models for AGNs Using New Atomic Data Sets (2020) (14)
Deep and narrow CO absorption revealing molecular clouds in the Hydra-A brightest cluster galaxy (2019) (14)
The Carbon and Nitrogen Abundance Ratio in the Broad Line Region of Tidal Disruption Events (2017) (14)
Emission‐Line Helium Abundances in Highly Obscured Nebulae (1999) (14)
Measurement and Interpretation of Deuterium-Line Emission in the Orion Nebula (2001) (14)
Close-coupling calculations of low-energy inelastic and elastic processes in 4He collisions with H2: A comparative study of two potential energy surfaces. (2004) (14)
Accurate Determination of the Free–Free Gaunt Factor – I. Non-Relativistic Gaunt Factors (2014) (14)
Multiphase signatures of active galactic nucleus feedback in Abell 2597 (2012) (14)
Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548 (2020) (13)
N ii λλ5668–5712: A NEW CLASS OF SPECTRAL FEATURES IN ETA CARINAE (2011) (13)
STUDIES OF NGC 6720 WITH CALIBRATED HST/WFC3 EMISSION-LINE FILTER IMAGES. II. PHYSICAL CONDITIONS , (2013) (13)
H, He-like recombination spectra I : l-changing collisions for hydrogen (2016) (13)
BOOTSTRAPPING DIELECTRONIC RECOMBINATION FROM SECOND-ROW ELEMENTS AND THE ORION NEBULA (2015) (13)
Temperature Fluctuations in Photoionized Nebulae. II. The Effect of Inhomogeneous Abundances (1998) (13)
Fe iii emission in quasars: evidence for a dense turbulent medium (2020) (13)
ORION’S VEIL. IV. H2 EXCITATION AND GEOMETRY (2016) (13)
ROVIBRATIONALLY RESOLVED DIRECT PHOTODISSOCIATION THROUGH THE LYMAN AND WERNER TRANSITIONS OF H2 FOR FUV/X-RAY-IRRADIATED ENVIRONMENTS (2008) (13)
The first spectroscopic dust reverberation programme on active galactic nuclei: the torus in NGC 5548 (2019) (13)
Implications of coronal line emission in NGC 4696 (2014) (13)
Energy Levels and Transition Probabilities for Boron-Like Fe XXII (2006) (13)
The optical-ultraviolet-gamma-ray spectrum of 3C 279 (1994) (12)
Magnetic Confinement, MHD Waves, and Smooth Line Profiles in AGN (2000) (12)
The Structure of the Orion Nebula in the Direction of θ1 Ori C (2019) (12)
A BARE MOLECULAR CLOUD AT z ∼ 0.45 (2010) (12)
Residual Cooling and Persistent Star Formation amid AGN Feedback in Abell 2597 (2012) (12)
Intermediate-line Emission in AGNs: The Effect of Prescription of the Gas Density (2018) (12)
The semiforbidden C III lambda 1909 effective wavelength-redshift relationship in quasars (1981) (12)
H, He-like recombination spectra II: $l$-changing collisions for He Rydberg states (2016) (12)
Physical Conditions in the Accretion Disk of V603 Aquilae (1982) (12)
Radiative cooling II: effects of density and metallicity (2014) (12)
Photoelectric measurements of lunar occultations. VIII. (1976) (12)
The interstellar reddening and distance of Nova Cygni 1975 /V1500 Cygni/ (1977) (11)
A BRIGHT MOLECULAR CORE IN A CRAB NEBULA FILAMENT (2010) (11)
Photoerosion and the Abundances of the Light Elements (1988) (11)
Hydrogen Emissivity in Realistic Nebulae: The Effects of Velocity Fields and Internal Dust (1988) (11)
Quasars and Cosmology (1999) (11)
On the rapid emission-line variations in IC 4997 (1979) (11)
Observations of 3C 390.3 with the International Ultraviolet Explorer (1979) (11)
Grains in Ionized Nebulae. II. Heavy-Element Depletion (1997) (11)
Dissipative Heating and Quasar Emission Lines (2002) (11)
Emission Line Ratios of FE III as Astrophysical Plasma Diagnostics (2017) (11)
HST Spectroscopy of the Orion Nebula (1996) (10)
EXPANDED IRON UTA SPECTRA—PROBING THE THERMAL STABILITY LIMITS IN AGN CLOUDS (2013) (10)
A SURVEY FOR SMALL-AMPLITUDE VARIABILITY AMONG POPULATION II STARS. (1976) (10)
HERSCHEL DUST EMISSION AS A PROBE OF STARLESS CORES MASS: MCLD 123.5+24.9 OF THE POLARIS FLARE (2015) (10)
Detection of optical coronal emission from 106-K gas in the core of the Centaurus cluster (2010) (10)
Energy levels and transition probabilities for nitrogen-like Fe xx , (2005) (10)
NGC 6302: ionized by a very hot star or by a wind? (1991) (10)
Interpreting the Ionization Sequence in Star-Forming Galaxy Emission-Line Spectra (2016) (10)
Herschel images of NGC 6720: H2 formation on dust grains [Letter] (2010) (10)
Spectroscopic observations of Nova Cygni 1975: The coronal line region revisited (1986) (10)
Numerical Simulations of Plasmas and Their Spectra (1997) (9)
Space Telescope and Optical Reverberation Mapping Project. X. The Hidden Life of "the Obscurer" in NGC 5548 and Understanding the Absorption-Line Holiday (2018) (9)
Temperature Variations from HST Imagery and Spectroscopy of NGC 7009 (2003) (9)
Implications of Lyman-alpha equivalent widths in active galactic nuclei (1993) (9)
Dirac-Fock Energy Levels and Transition Probabilities for Oxygen-Like Fe XIX (2004) (9)
STUDIES OF NGC 6720 WITH CALIBRATED HST/WFC3 EMISSION-LINE FILTER IMAGES. III. TANGENTIAL MOTIONS USING ASTRODRIZZLE IMAGES (2013) (9)
Helium abundance in ejecta from CP Lacertae and V446 Herculis (1979) (9)
Deciphering the 3D Orion Nebula-I: Expanding Shells in the Huygens Region (2020) (8)
The abundance discrepancy factor and t^2 in nebulae: are non-thermal electrons the culprits? (2016) (8)
Collisional excitation of [C ii], [O i] and CO in massive galaxies (2015) (8)
A transition mass for black holes to show broad emission lines (2012) (8)
Hydrogen two‐photon continuum emission from the Horseshoe filament in NGC 1275 (2012) (8)
Spectroscopic observations of Nova Cygni 1975: the coronal line phase. (1977) (8)
Space Telescope and Optical Reverberation Mapping Project. XI. Disk-wind Characteristics and Contributions to the Very Broad Emission Lines of NGC 5548 (2020) (8)
Stimulated Emission and the Flat Balmer Decrements of Cataclysmic Variable Stars (1983) (7)
[O I] and [C II] Emission Towards NGC 6334 A (2007) (7)
The Validity of 21 cm Spin Temperature as a Kinetic Temperature Indicator in Atomic and Molecular Gas (2017) (7)
The ultraviolet and optical emission-line spectrum of III Zw 77 (1987) (7)
Suppression of Dielectronic Recombination Due to Finite Density Effects. II. Analytical Refinement and Application to Density-dependent Ionization Balances and AGN Broad-line Emission (2018) (7)
H-, He-like recombination spectra – III. n-changing collisions in highly excited Rydberg states and their impact on the radio, IR, and optical recombination lines (2019) (7)
Implications of Lyman continuum observations of quasars (1988) (7)
X-Ray Spectroscopy in the Microcalorimeter Era. I. Effects of Fe xxiv Resonant Auger Destruction on Fe xxv Kα Spectra (2020) (6)
EVIDENCE FOR FLUORESCENT Fe ii EMISSION FROM EXTENDED LOW IONIZATION OUTFLOWS IN OBSCURED QUASARS (2016) (6)
Cosmic Ray Dissociation of Molecular Hydrogen and Dense Cloud Chemistry (2020) (6)
The helium abundance of ejecta from V1500 Cygni (Nova Cygni 1975). (1978) (6)
ULTRAVIOLET EMISSION LINES OF Si ii IN QUASARS—INVESTIGATING THE “Si ii DISASTER” (2016) (6)
SOME COMMENTS ON MODELS OF PHOTOIONIZED NEBULAE (1984) (6)
Photoerosion of nuclei in quasar emission-line regions (1987) (6)
Hyperfine Structure Emission and Absorption Lines in Hot Gas (2003) (6)
Erratum: “State-to-state rotational transitions in H2+H2 collisions at low temperatures” [J. Chem. Phys.125, 114302 (2006)] (2007) (6)
Production of photoionized plasmas in the laboratory with x-ray line radiation. (2018) (6)
The physics and astrophysics of X-ray outflows from Active Galactic Nuclei. (2019) (6)
Inner-shell photoexcitation of Fe xv and Fe xvi (2003) (5)
Photoionization Model Nebulae (2001) (5)
Evidence of a Tidal-disruption Event in GSN 069 from the Abnormal Carbon and Nitrogen Abundance Ratio (2021) (5)
Fine-structure lines and the 10 micron excess of nova Cygni 1975 (1978) (5)
Intervening BLR Clouds' Effects on Optical/UV Spectrum (2012) (5)
He I 2.06 Micron Emission from Nebulae (1999) (5)
Dielectric recombination and stability of warm gas in AGN (2012) (5)
On nitrogen abundances of planetary nebulae (1981) (5)
EFFECTS OF EXTERNAL RADIATION FIELDS ON LINE EMISSION—APPLICATION TO STAR-FORMING REGIONS (2013) (5)
Numerical simulations of photoionized plasmas: applications to astrophysical and laboratory environments (2011) (5)
X-Ray Spectroscopy in the Microcalorimeter Era. II. A New Diagnostic on Column Density from the Case A to B Transition in H- and He-like Iron (2020) (4)
On the distance and luminosity of nova DQ Herculis (1980) (4)
Determining the H+ Region / PDR Equation of State in Star-forming Regions (2006) (4)
Far-ultraviolet dust opacity and photoionization in quasi-stellar objects (1980) (4)
On the Intermediate Line Region in AGNs (2017) (4)
Conference Summary: The Cosmic Agitator - Magnetic Fields in the Galaxy (2008) (4)
Deciphering the 3D Orion Nebula. II. A Low Ionization Region of Multiple Velocity Components Southwest of θ 1 Ori C Confounds Interpretation of Low Velocity Resolution Studies of Temperature, Density, and Abundance (2020) (4)
DETECTING THE RAPIDLY EXPANDING OUTER SHELL OF THE CRAB NEBULA: WHERE TO LOOK (2013) (4)
A masing [Fe XI] line (1993) (4)
How to Make an Atomic Blog in Your Own Kitchen. Summary of the Workshop: Uncertainties in Atomic Data and How They Propagate in Chemical Abundances (2011) (4)
X-Ray Spectroscopy in the Microcalorimeter Era. III. Line Formation under Case A, Case B, Case C, and Case D in H- and He-like Iron for a Photoionized Cloud (2021) (4)
DENSITY INHOMOGENEITIES AND THE DEDUCED CHEMICAL COMPOSITION OF PLANETARY NEBULAE (1983) (4)
Role of Polycyclic Aromatic Hydrocarbons on the Cosmic-Ray Ionization Rate in the Galaxy (2021) (4)
Newly Improved Ionization Corrections for the Neutral Interstellar Medium: Enabling Accurate Abundance Determinations in Star-forming Galaxies throughout the Universe (2020) (4)
Origin of the coronal line emission from novae (1978) (4)
THE SURFACE DISTRIBUTION OF BALMER EMISSION ON YY GEMINORUM. (1976) (3)
On the carbon composition of the ejecta of DQ Herculis (1980) (3)
The collision strength of the [Ne V] infrared fine-structure lines (1999) (3)
Advances in Numerical Simulations of Gaseous Nebulae (1993) (3)
Cloudy 94 and Applications to Quasar Emission Line Regions (2000) (3)
Gas condensation in brightest group galaxies unveiled with MUSE. Morphology and kinematics of the ionized gas (2022) (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)
Space Telescope and Optical Reverberation Mapping Project. XIII. An Atlas of UV and X-Ray Spectroscopic Signatures of the Disk Wind in NGC 5548 (2020) (3)
Intervening Broad-Line Region Clouds' Effects on the Optical/Ultraviolet Spectrum (2012) (3)
Physical conditions in the Homunculus (2005) (3)
He I λ 584 in quasars and gaseous nebulae (1980) (3)
Theoretical He I line intensities in gaseous nebulae: NGC 1976, 6572 and IC 4997 (1996) (3)
Two‐Photon Transitions and Continuous Emission from Hydrogenic Species (2006) (3)
The ionization balance of a non-equilibrium plasma (2009) (3)
Unlocking the Capabilities of Future High-Resolution X-ray Spectroscopy Missions Through Laboratory Astrophysics (2019) (3)
HeI Line Intensities in CLOUDY (2003) (2)
Fe II velocity shifts in optical spectra of type 1 AGN (2018) (2)
PERIODICITIES AND RAPID VARIABILITY IN NOVA CYGNI 1975. (1977) (2)
Magnetic fields and the location of the PDR (2008) (2)
Ultraviolet emission lines of Si II in cool star and solar spectra (2015) (2)
Ro-vibrational analysis of SiO in UV-irradiated environments (2018) (2)
State‐specific Hydrogenic Recombination Cooling Coefficients for a Wide Range of Conditions (2001) (2)
Physical conditions in two high-redshift H2-bearing GRB-DLAs, 120815A and 121024A (2020) (2)
Nova shells: matter-bound or radiation-bound? (1977) (2)
Mapping Gas Flows in AGNs by Reverberation (2020) (2)
ON PHOTOPRODUCTION OF ULTRAVIOLET EMISSION LINES (1986) (2)
A molecular absorption line survey towards the AGN of Hydra-A (2020) (2)
Atomic data for astrophysics: Needs and challenges (2019) (2)
Residual cooling and persistent star formation amid active galactic nucleus feedback in Abell 2597 (2012) (2)
Continuous absorption of He I 10830 A in planetary nebulae (1993) (2)
Radiatively accelerated nova envelopes (1981) (2)
Understanding strong molecular hydrogen emission in astronomical environments (2011) (2)
Variations of the Hβ-emission line during a large flare on UV Ceti (1977) (2)
Observational Consequences of Fine‐Structure Line Optical Depths on Infrared Spectral Diagnostics (2002) (2)
Cloudy in the Microcalorimeter Era: Improved Energies for Kα Transitions (2020) (2)
ON THE OBSERVABILITY OF OPTICALLY THIN CORONAL HYPERFINE STRUCTURE LINES (2014) (2)
Near infrared hydrogen emission line ratios as diagnostics of the broad emission line region (2012) (1)
Molecular hydrogen in the diffuse interstellar medium at high redshift (2005) (1)
Relativistic analogues of nonrelativistic integrals in R-matrix calculations (2005) (1)
Linking the properties of accreting white dwarfs with the ionization state of their ambient medium (2022) (1)
The Paschen Jump as a Diagnostic of the Diffuse Nebular Continuum Emission in Active Galactic Nuclei (2021) (1)
Constraining the Cold Gas and Dust in Cluster Cooling Flows (2010) (1)
HST insights into the missing piece of the AGN feedback puzzle: The role of disk winds (2020) (1)
Self-consistent grain depletions and abundances I: The Orion Nebula as a test case (2022) (1)
Revisiting the torus: spectral predictions from the IR to the X-ray (2004) (1)
Deciphering the 3D Orion Nebula. III. Structure on the NE Boundary of the Orion-S Embedded Molecular Cloud (2021) (1)
Self consistent grain depletions and abundances II: Effects on strong-line diagnostics of extragalactic H II regions (2022) (1)
High-ionization emission-line ratios from quasar broad-line regions: metallicity or density? (2021) (1)
2018 NASA Laboratory Astrophysics Workshop: Scientific Organizing Committee Report (2020) (1)
Intermediate line emission in AGN: the effect of gas density prescription (2018) (1)
Grains in Photo-Ionized Environments (2001) (1)
Thermodynamically-consistent semi-classical ℓ-changing rates (2017) (1)
The shell phase in nova Cygni (1975). (1977) (1)
New Discoveries in the Galactic Neighborhood through Advances in Laboratory Astrophysics (2009) (1)
Powering The Intra-cluster Filaments in Cool- Core Clusters of Galaxies (2011) (1)
Spectroscopy of Planetary Nebulae (1987) (1)
Cloudy in the Microcalorimeter Era: Improved Energies for Si and S Kα Fluorescence Lines (2021) (1)
New Discoveries in Stars and Stellar Evolution through Advances in Laboratory Astrophysics (2009) (1)
Cloudy's Journey from FORTRAN to C, Why and How (2000) (1)
Molecular hydrogen in NLSys and its implications for the SED (2011) (1)
THE EFFECT OF TELLURIC ABSORPTION ON THE INTENSITY OF HE ILAMBDA 10830 (1991) (1)
Erratum: Studies of NGC 6720 with Calibrated HST/WFC3 Emission-line Filter Images. I. Structure and Evolution (2013a, AJ, 145, 92) and II. Physical Conditions (2013b, AJ, 145, 93) (2021) (1)
New Discoveries in Planetary Systems and Star Formation through Advances in Laboratory Astrophysics (2009) (1)
Photoionization cross sections for O-like S IX: a Breit–Pauli R-matrix calculation (2015) (1)
New Discoveries in Galaxies across Cosmic Time through Advances in Laboratory Astrophysics (2009) (1)
Atomic Data and Spectral Model for Fe ɪɪ (2018) (1)
Reliability in the Face of Complexity; The Challenge of High-End Scientific Computing (2002) (1)
The spectrum of a single photoionized cloud (2003) (1)
Recent Updates to the Gas-phase Chemical Reactions and Molecular Lines in CLOUDY: Their Effects on Millimeter and Submillimeter Molecular Line Predictions (2022) (1)
Dense Molecular Clouds in the Crab Supernova Remnant (2021) (1)
The [O II] – [S II] spectra of active galactic nuclei (1983) (1)
Observations and simulations of recurrent novae: U Sco and V394 CrA (1988) (1)
Hypermassive black holes have faint broad and narrow emission lines (2020) (1)
Current Development of the Photo-Ionization Code Cloudy (2000) (1)
What is 4He from H II regions? What needs to be done to better understand the systematic errors? (2009) (1)
Analytic FITS for photoionization cross sections of atoms and ions (1995) (1)
Radiation pressure-driven outflows from dusty AGN (2022) (1)
Quasars, the early universe, and plasma simulations (1998) (1)
Photoionized Plasma Calculations using Laboratory and Astrophysical Models (2001) (1)
The Nature of the Broad-Line Clouds (1992) (1)
Accurate Photodissociation in UV and X-ray Irradiated Molecular Gas (2011) (1)
Hidden cooling flows in clusters of galaxies (2022) (1)
X-Ray Spectroscopy in the Microcalorimeter Era 4: Optical Depth Effects on the Soft X-Rays Studied with Cloudy (2022) (1)
The PG X-ray QSO sample: Links between the UV-X-ray Continuum and Emission Lines (1999) (1)
New Discoveries in Cosmology and Fundamental Physics through Advances in Laboratory Astrophysics (2009) (1)
Continuum variability in Nova Cygni 1975 (1976) (1)
Generation of photoionized plasmas in the laboratory: Analogues to astrophysical sources (2019) (0)
Accurate Radiative Recombination Coefficients for Helium (2004) (0)
Reduced data for the Swift Intensive Accretion Disk Reverberation Mapping Survey (2018) (0)
Implications of infalling Fe II - emitting clouds in AGN: anisotropic properties (2009) (0)
Molecular hydrogen at high-z: physical conditions in protogalaxies (2005) (0)
Atomic Data for Permitted Resonance Lines (1996) (0)
MEASUREMENT AND INTERPRETATION OF DEUTERIUM-LINE EMISSION IN THE ORION NEBULA 1 , 2 , 3 (2017) (0)
Fe II emission from quasars and AGN. (1991) (0)
Eta Carinae's Continuing Instability and Recovery -- The 2009 ``Event'' (2008) (0)
Helium Abundances of Six Old Novae (1977) (0)
PW Vul: A classical nova with nearly solar abundances (1990) (0)
The Chemical Enrichment of Gas in BALQSOs: Rapid Star Formation in the Early History of Galaxies (1995) (0)
Magnetic Confinement and High-Velocity Turbulence in AGN (2001) (0)
A young solar twin in the Rosette cluster NGC 2244 line of sight (2018) (0)
VizieR Online Data Catalog: Space telescope RM project. V. NGC5548 sp. monitoring (Pei+, 2017) (2017) (0)
A Complete Model Helium Atom: Theoretical Emissivities, the Case B Approximation, and the Primordial Helium Abundance (2004) (0)
The Structure of the Broad-Line Region in Well-Studied AGNs (1997) (0)
The Chemistry of QSOs and the Implications for Cosmology (1992) (0)
Recent Advances In The Spectral Simulation Code Cloudy (2012) (0)
Cloudy - simulating the non-equilibrium microphysics of gas and dust, and its observed spectrum (2014) (0)
VizieR Online Data Catalog: Transition probabilities for Fe XVIII (Jonauskas+, 2004) (2003) (0)
Opacity Project Photoabsorption Data and Photoionization Calculations (1991) (0)
What's behind Orion's Bar? (2008) (0)
Numerical simulations of infrared emitting regions (1997) (0)
Low energy He+H$_{2}$ collisions: Comparative study between two potential surfaces (2005) (0)
H, He-like recombination spectra – IV. Clarification and refinement of methodology for l-changing collisions (2021) (0)
Very luminous objects. (1992) (0)
Spectra of Symbiotic Stars (1983) (0)
A SEARCH FOR WEAK INTERSTELLAR LINES. (1977) (0)
Abell 39 --- The Theoretician's Nebula Confronts The Theoreticians (1997) (0)
A z=0.45 DLA With Only Weak MgII Absorption? (2006) (0)
Spectral Modeling in Astrophysics—The Physics of Non-equilibrium Clouds (2016) (0)
Rotationally Warm Molecular Hydrogen in the (2009) (0)
Backscattering and Line Broadening in Orion (2022) (0)
VizieR Online Data Catalog: FeXX energy levels + transition probabilities (Jonauskas+, 2005) (2005) (0)
Quantitative Spectroscopy of High Redshift Quasars (1996) (0)
Theoretical Studies of Starburst Infrared Emission: Luminosity Indicators in Dusty Photoionized Environments (1998) (0)
Einstein's biggest mistake? (2019) (0)
Two-photon Transitions In "cloudy" (2006) (0)
H2 in the UV-rich Environment of Orion's Veil (2014) (0)
Hidden Cooling Flows in Clusters of Galaxies II: A Wider Sample (2022) (0)
Donald E. Osterbrock (1924–2007) (2007) (0)
Implications of Nonlinear Line Response in Variable Seyfert Nuclei (1994) (0)
THE HYDRODYNAMICS OF PHOTOIONIZED FLOWS (2002) (0)
High redshift quasars and high metallicities (1997) (0)
Theory and laboratory astrophysics (1991) (0)
Cold Gas and Dust in Cool-Core Galaxy Clusters (2010) (0)
Herschel observations of NGC 7027 (2011) (0)
Lyα pumping of Fe II in quasars and AGN. (1992) (0)
Recent Updates of Gas-phase Chemical Reactions and Molecular Lines of SiS in CLOUDY (2023) (0)
Expanding cloudy with third-party databases (2008) (0)
Structure and physical conditions in the Huygens region of the Orion nebula C . (2018) (0)
Observations of classical novae in outburst (1988) (0)
Models of FeII emission in infrared and optical wavelength range (1995) (0)
Fe II emission from AGN — results from new atomic datasets (2020) (0)
Testing atomic collision theory with the two-photon continuum of astrophysical nebulae (2017) (0)
Molecular hydrogen in photoionized regions (2003) (0)
A recent update of gas-phase chemical reactions and molecular lines in CLOUDY: its effects on millimeter and sub-millimeter molecular line predictions (2022) (0)
ALMA Submillimeter Observations of Molecular Globules within the Crab Nebula (2018) (0)
Review THE 2017 RELEASE OF Cloudy (2017) (0)
Modeling X-ray Ionization of Grains with Cloudy (2008) (0)
Suppression of Dielectronic Recombination at Finite Densities (2014) (0)
Are Quasars Fractal (2002) (0)
Lα Destruction in Dusty QSOs (1977) (0)
Grain Size Distributions and Photo-Electric Heating in Ionized Regions (2003) (0)
FeII and [FeII] Emission Lines: Numerical Models and Spectroscopic Observations of the Ejecta Associated with Eta Carinae (2001) (0)
Molecular Hydrogen as a Finite-density and Temperature Indicator (2014) (0)
Emission line region kinematics in selected Seyfert galaxies (1987) (0)
Ultraviolet spectroscopy of planetary nebulae: Cosmological implications (1990) (0)
The Nature of Compact Objects in Active Galactic Nuclei: The Chemical Evolution of QSOs (1994) (0)
Absorption from clouds in QSO emission-line regions (1980) (0)
Optical and ultraviolet observations of nova Vul 1987 (1988) (0)
A Practical Guide to the Partition Function of Atoms and Ions (2022) (0)
Abell 39 -- A Benchmark Planetary Nebula For Numerical Modeling (2000) (0)
Emission-Line Properties and the Ionizing Radiation Field in the Galactic Center (1992) (0)
Towards Complete Microphysical Modeling of Warm Interstellar Molecules: H2 Collisional Dissociation for Spitzer IR Observations (2006) (0)
Plasma simulations that meet the challenges of HST & JWST Active Nuclei & Starburst observations (2017) (0)
Magnetic fields, stellar feedback, and the geometry of H II regions (2008) (0)
Spectroscopic observations of Nova Cygni 1975 - Detection of diffuse enhanced spectrum (1977) (0)
Revisiting Standard Helium-like X-ray Diagnostics (2006) (0)
Temperature variations and n+/o+ in the orion nebula IIthe collision strengths (2001) (0)
Roles and Needs of Laboratory Astrophysics in NASA's Space and Earth Science Mission (2009) (0)
Multiple locations of near-infrared coronal lines in NGC 5548 (2022) (0)
Probing the Galactic Magnetic Field Towards 12 Open Clusters (2008) (0)
Deciphering the 3D Orion Nebula-IV: The HH 269 Flow Emerges from the Orion-S Embedded Molecular Cloud (2021) (0)
Impact of sub-keV Soft Excess on Warm Absorbers (2009) (0)
Observing the Hyperfine 3.06mm Line Of Iron-57 With ALMA (2013) (0)
Fe II emission from HII regions to Active Galactic Nuclei (1999) (0)
The Nature of the Crab Nebula Filaments (2011) (0)
Very Luminous Objects: Active Galactic Nuclei . R. D. Blandford, H. Netzer, and L. Woltjer. Springer-Verlag, New York, 1990. xii, 280 pp., illus. $49.50. Saas-Fee Course 20, Lecture Notes 1990. (1992) (0)
Lessons from other wavelengths (2005) (0)
Division VI: Interstellar Matter (2005) (0)
The theory of emission-line regions in active galactic nuclei (1985) (0)
Quasars and cosmology : proceedings of a meeting held at La Serena, Chile, 18-22 May, 1998 (1999) (0)
The Challenge of Accurate Helium Abundances (1992) (0)
A comparative study of two potential energy surfaces (2004) (0)
CA II EMISSION VARIABILITY IN BY DRACONIS. (1977) (0)
The Structure of the Orion Nebula and its Interaction with Orion-S (2020) (0)
2-1-2009 Fluorescent Excitation of Balmer Lines in Gaseous Nebulae : Case (2017) (0)
Quantitative spectroscopy of starburst and quasar emission line regions (1997) (0)
Excitation mechanisms in the intracluster filaments surrounding brightest cluster galaxies (2021) (0)
The N/O Abundance Ratio in the Orion Nebula From UV Lines (1995) (0)
Quasars : the birth of galaxies (1993) (0)
A HERSCHEL study of PNe (2011) (0)
Calcium Infrared Triplet Emission in AGN (1989) (0)
Modeling quasar Fe II emission spectra (1998) (0)
Fe II emission lines as a chronometer for high-redshift quasars (1999) (0)
Ultraviolet observations of LMC nova 1988 (1988) (0)
Molecular Hydrogen in the High Redshift Damped Ly-α Systems: (2005) (0)
The Molecular Content of the Crab Nebula (2012) (0)
NGC 3393 — Broad(er) Lines in a Nearby Seyfert 2 Galaxy (1997) (0)
Detailed microphysics of H 0 and its effect on the 21 cm spin temperature (2005) (0)
Emission line variations of Nova V1500 Cygni and the structure of the central object (1980) (0)
Uncorrelated behavior of narrow absorption lines in NGC 5548 (2019) (0)
Locally Optimally Emitting Clouds and the Origin of AGN Broad Emission Lines (1996) (0)
An Electron Scattering Screen in the Inner Regions of Seyfert Galaxies (1989) (0)
Numerical simulations of outflows in quasars: the microphysics of BAL winds (2003) (0)
A BARE MOLECULAR CLOUD AT z ∼ 0 (2017) (0)
From Ly α to the Hydrogen Balmer Lines: Quasi-Simultaneous HST-Ground-Based Spectrophotometry of a Quasar Sample (1994) (0)
02 12 24 4 v 1 1 0 D ec 2 00 2 Temperature Variations from HST Spectroscopy of the Orion Nebula (2021) (0)
Creating a CLOUDY-Compatible Database with CHIANTI Version 10 Data (2022) (0)
A molecular absorption line survey toward the AGN of Hydra-A. Monthly (2020) (0)
Does absorption against AGN reveal supermassive black hole accretion? (2022) (0)
N III Line Emission in Planetary Nebulae: Continuum Fluorescence: Erratum (1994) (0)
VizieR Online Data Catalog: Variability of SDSS broad absorption line QSOs (Wang+, 2015) (2016) (0)
Simulating Large-Scale Structure for Models of Cosmic Acceleration (2018) (0)
The Nature of Compact Objects in Active Galactic Nuclei: High Metallicities in QSOs (1994) (0)
Open Source codes for H-like ions' atomic transition probabilities, photoionization cross-sections, and radiative recombination rate coefficients. (2001) (0)
Molecular hydrogen emission as a density and temperature indicator (2016) (0)
The Broad Emission Line Regions of Quasars - current status and future prospects (2004) (0)
He II Reverberation in AGN (2004) (0)
Laboratory Astrophysics and the State of Astronomy and Astrophysics (2009) (0)
The PG X-ray QSO Sample: Ionizing Continuum and Properties of the Fueling Gas (1998) (0)
The HeI Isoelectronic Sequence in Cloudy: Comparison with Observations (2003) (0)
Multiwavelength Studies of Classical Nova Shells (1991) (0)
VizieR Online Data Catalog: X-ray/UV Swift monitoring of NGC 4151 (Edelson+, 2017) (2017) (0)
Photoelectric Differential Photometry of the Contact Binary AW UMa (1976) (0)
Improved Simulations of Astrophysical Plasmas: Computation of New Dielectronic Recombination Data, in Spectroscopic Challenges of Photoionized Plasmas (2001) (0)
Don Osterbrock and the Seat on‐Osterbrock collaboration (2008) (0)
Molecular Collisional Excitation Computations for Modeling of FIR/Submm Observations (2011) (0)
Can Quasars Be Used As Cosmological Candles (1996) (0)
Spectroscopic challenges of photoionized plasmas : proceedings of a conference held at University of Kentucky, Lexington, Kentucky, USA, 15-18 November 2001 (2001) (0)
IRS Spectroscopy of Cluster Core Filaments (2005) (0)
VizieR Online Data Catalog: Swift optical & UV flux of four AGNs (Edelson+, 2019) (2020) (0)
April 15 H , Helike recombination spectra – I . l-changing collisions for hydrogen (2019) (0)
Rovibrational CO analysis in PDR models (2016) (0)
Stellar Feedback in Massive Star-Forming Regions (2008) (0)
Observations and simulations of nova Vul 1984 no. 2: A nova with ejecta rich in oxygen, neon, and magnesium (1988) (0)
1 Introduction (2007) (0)
Late stages in the evolution of classical novae (1990) (0)
Modeling X-ray Emission due to Charge Exchange (2012) (0)
The Nature of Compact Objects in Active Galactic Nuclei: Non-Linearity of Ly α Response in Variable AGNs (1994) (0)
High Redshift Quasars, Emission Lines and ‘Cloudy’ (2011) (0)
The curious conundrum regarding sulfur and oxygen abundances in planetary nebulae (2011) (0)
The PG X-Ray QSO Sample: Links among X-ray, UV & Optical Spectra (1998) (0)
Testing AGN outflow and accretion models with CIV and HeII emission line demographics in z=2 quasars (2023) (0)
TESTING THE CREATION OF THE UNIVERSE: THE PRIMORDIAL HELIUM ABUNDANCE (2003) (0)
DIVISION VI: INTERSTELLAR MATTER (2010) (0)
VizieR Online Data Catalog: Fe XIX transition probabilities (Jonauskas+, 2004) (2004) (0)
Partial Covering by an Fe I-rich Intervening Weak Mg II Absorber (2007) (0)
AGN STORM 2: II. Ultraviolet Observations of Mrk817 with the Cosmic Origins Spectrograph on the Hubble Space Telescope (2023) (0)
Spectroscopic signatures of star formation in Damped Lyα absorbers (2004) (0)
Ultraviolet spectroscopy of old novae and symbiotic stars (1981) (0)
Temperature Variations from HST Spectroscopy of NGC 1976 (2003) (0)
A Complete Helium Model in Cloudy (2004) (0)
Multiphase Signatures of AGN Feedback in Abell 2597 (2013) (0)
Implications of IR continua for x-ray emission/reflection in AGN (2003) (0)
New Results on Quasar Outflows (2009) (0)
VizieR Online Data Catalog: Spectroscopy and HST imaging in ONC (O'Dell+, 2015) (2016) (0)
Calculation of Fe II atomic data required for the modeling of HST observations (2003) (0)
Title Space Telescope and Optical Reverberation Mapping Project . V . Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548 Permalink (2017) (0)
Meeting the Challenge of Webb - Spectroscopic Simulations of Star-Forming Regions and Active Galactic Nuclei (2013) (0)
MHD Waves, Magnetic Line Broadening and Smooth Line Profiles (1999) (0)
Advances in the C17 release of the spectral code CLOUDY (2018) (0)
HeII Reverberation in AGN Spectra (2002) (0)
Thermal emission from HeI under nebular conditions (2001) (0)
Fe(+) Emission from Eta Carinae B and D Blobs: Theory and HST Observations (2001) (0)
Technical Memorandum 86110 COSMIC RAYS AND THE EMISSION LINE REGIONS OF ACTIVE GALACTIC NUCLEI (2008) (0)
Cloudy in the microcalorimeter era: improved energies for K$\alpha$ transitions. (2020) (0)

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