Allan Sandage
#7,788
Most Influential Person Now
American astrophysicist
Allan Sandage's AcademicInfluence.com Rankings
Allan Sandagephysics Degrees
Physics
#318
World Rank
#583
Historical Rank
#152
USA Rank
Astrophysics
#36
World Rank
#37
Historical Rank
#14
USA Rank
Astronomy
#44
World Rank
#122
Historical Rank
#25
USA Rank
Download Badge
Physics
Allan Sandage's Degrees
- PhD Astronomy University of California, Berkeley
Why Is Allan Sandage Influential?
(Suggest an Edit or Addition)According to Wikipedia, Allan Rex Sandage was an American astronomer. He was Staff Member Emeritus with the Carnegie Observatories in Pasadena, California. He determined the first reasonably accurate values for the Hubble constant and the age of the universe.
Allan Sandage's Published Works
Published Works
- Evidence from the motions of old stars that the Galaxy collapsed. (1962) (1308)
- Revised Shapley-Ames Catalog of Bright Galaxies (1980) (704)
- Studies of the Virgo Cluster. II - A catalog of 2096 galaxies in the Virgo Cluster area. (1985) (695)
- The Hubble atlas of galaxies (1961) (623)
- The Carnegie atlas of galaxies (1994) (351)
- Redshifts and magnitudes of extragalactic nebulae. (1956) (349)
- The Luminosity Function of Galaxies (1988) (340)
- Studies of the Virgo cluster. VI. Morphological and kinematical structure of the Virgo cluster (1987) (336)
- The velocity field of bright nearby galaxies. I - The variation of mean absolute magnitude with redshift for galaxies in a magnitude-limited sample (1979) (312)
- The color - absolute magnitude relation for E and S0 galaxies. I. Calibration and tests for universality using Virgo and eight other nearby clusters. (1977) (296)
- The color-magnitude diagram for the globular cluster M 3. (1953) (275)
- OPTICAL IDENTIFICATION OF 3C 48, 3C 196, AND 3C 286 WITH STELLAR OBJECTS (1963) (271)
- Studies of the Virgo Cluster. 5. Luminosity Functions of Virgo Cluster Galaxies (1985) (259)
- The Change of Redshift and Apparent Luminosity of Galaxies due to the Deceleration of Selected Expanding Universes. (1962) (259)
- Studies of the Virgo cluster. III - A classification system and an illustrated atlas of Virgo cluster dwarf galaxies (1984) (245)
- The Ability of the 200-Inch Telescope to Discriminate Between Selected World Models (1961) (241)
- Galaxies and the universe (1975) (239)
- The Hubble Constant: A Summary of the Hubble Space Telescope Program for the Luminosity Calibration of Type Ia Supernovae by Means of Cepheids (2006) (235)
- The Existence of a Major New Constituent of the Universe: the Quasistellar Galaxies. (1965) (188)
- The Intrinsic Flattening of e, so, and Spiral Galaxies as Related to Galaxy Formation and Evolution (1970) (177)
- ENERGY DISTRIBUTIONS, K CORRECTIONS, AND THE STEBBINS--WHITFORD EFFECT FOR GIANT ELLIPTICAL GALAXIES. (1968) (176)
- The redshift-distance relation. II. The Hubble diagram and its scatter for first-ranked cluster galaxies: A formal value for q 0 . (1972) (168)
- Main-sequence photometry, color-magnitude diagrams, and ages for the globular clusters M3, M13, M15, and M92 (1970) (165)
- Studies of the Virgo Cluster. I - Photometry of 109 galaxies near the cluster center to serve as standards (1984) (164)
- The redshift-distance relation. IX: Perturbation of the very nearby velocity field by the mass of the Local Group (1986) (161)
- EVIDENCE FOR AN EXPLOSION IN THE CENTER OF THE GALAXY M82 (1963) (158)
- The color-absolute magnitude relation for E and S0 galaxies. II - New colors, magnitudes, and types for 405 galaxies (1978) (157)
- The Cepheid Distance to NGC 5236 (M83) with the ESO Very Large Telescope (2003) (153)
- Steps toward the Hubble constant. V. The Hubble constant from nearby galaxies and the regularity of the local velocity field. (1975) (150)
- Cepheid Distances to SNe Ia Host Galaxies Based on a Revised Photometric Zero Point of the HST WFPC2 and New PL Relations and Metallicity Corrections (2006) (142)
- Current Problems in the Extragalactic Distance Scale. (1958) (142)
- The Local Group: the solar motion relative to its centroid. (1977) (141)
- THE ANOMALOUS COLOR--MAGNITUDE DIAGRAM OF THE REMOTE GLOBULAR CLUSTER NGC 7006. (1967) (135)
- The Stellar Content and Distance of the Galaxy NGC 2403 IN the M81 Group (1968) (134)
- Cepheid Calibration of the Peak Brightness of Type Ia Supernovae. VIII. SN 1990N in NGC 4639 (2001) (126)
- The Oosterhoff period groups and the age of globular clusters. III. The age of the globular cluster system. (1982) (124)
- Population studies in groups and clusters of galaxies. III. A catalog of galaxies in five nearby groups (1990) (121)
- Observational Tests of World Models (1988) (119)
- Cepheid Calibration of the Peak Brightness of SNe Ia. (1996) (116)
- The extension of the Hubble diagram. II - New redshifts and photometry of very distant galaxy clusters - First indication of a deviation of the Hubble diagram from a straight line (1978) (116)
- On the optical identification of Sco X-1 (1966) (114)
- Population Studies in Groups and Clusters of Galaxies. IV. Comparison of the Luminosity Functions and Morphological-Type Distributions in Seven Nearby Groups (1991) (112)
- Color--absolute magnitude relation for E and S0 galaxies. III. Fully corrected photometry for 405 galaxies: comparison of color distributions for E and S0 field and cluster galaxies. [Virgo, coma, centaurus, and fornax clusters] (1978) (109)
- Absolute Magnitude Calibrations of Population I and II Cepheids and Other Pulsating Variables in the Instability Strip of the Hertzsprung-Russell Diagram (2006) (106)
- Steps toward the Hubble constant. IV - Distances to 39 galaxies in the general field leading to a calibration of the galaxy luminosity classes and a first hint of the value of H sub 0 (1974) (105)
- On the stellar content and structure of the spiral galaxy M33. (1980) (102)
- Discovery of Cepheids in NGC 5253: Absolute peak brightness of SN Ia 1895B and SN Ia 1972E and the value of H(sub 0) (1995) (101)
- Steps toward the Hubble constant. VIII - The global value (1982) (99)
- The Redshift-Distance Relation. 111. Photometry and the Hubble Diagram for Radio Sources and the Possible Turn-On Time for QSOS (1972) (97)
- The Redshift-Distance Relation. VII Absolute Magnitudes on the First Three Ranked Cluster Galaxies as Functions of Cluster Richness and Bautz-Morgan Cluster Type: the Effect of q_{o} (1973) (95)
- The redshift-distance relation. V. Galaxy colors as functions of galactic latitude and redshift: observed colors compared with predicted distributions for various world models (1973) (94)
- Temperature mass, and luminosity of RR Lyrae stars as functions of metallicity at the blue fundamental edge. II (1993) (94)
- Population studies in groups and clusters of galaxies. I - The luminosity function of galaxies in the Fornax Cluster (1988) (92)
- Discovery of Cepheids in IC 4182: Absolute peak brightness of SN IA 1937C and the value of H[SUB]0[/SUB] (1994) (91)
- Supernova Type Ia Luminosities, Their Dependence on Second Parameters, and the Value of H0 (2000) (90)
- Cepheid Calibration of the Peak Brightness of Type Ia Supernovae. XI. SN 1998aq in NGC 3982 (2001) (89)
- The Brightest Variable Stars in Extragalactic Nebulae. I. M31 and M33. (1953) (89)
- Color-Magnitude Diagram for Disk Clobular Cluster NGC 6356 Compared with Halo Clusters. (1960) (86)
- Reddening, Absorption, and Decline Rate Corrections for a Complete Sample of Type Ia Supernovae Leading to a Fully Corrected Hubble Diagram to v < 30,000 km s–1 (2005) (85)
- New subdwarfs. VI. Kinematics of 1125 high-proper-motion stars and the collapse of the Galaxy (1987) (84)
- The Tolman Surface Brightness Test for the Reality of the Expansion. IV. A Measurement of the Tolman Signal and the Luminosity Evolution of Early-Type Galaxies (2001) (84)
- A Composite Period-Luminosity Relation for Cepheids at Mean and Maximum Light (1968) (83)
- Steps toward the Hubble constant. VI. The Hubble constant determined from redshifts and magnitudes of remote Sc I galaxies: The value of q$sub 0$ (1975) (83)
- The spatial distributions and intrinsic shapes of dwarf elliptical galaxies in the Virgo and Fornax Clusters (1989) (83)
- The Distance of the Local-Group Galaxy IC 1613 Obtained from Baade's Work on its Stellar Content (1971) (83)
- The Redshift-Distance Relation. I. Angular Diameter of First Ranked Cluster Galaxies as a Function of Redshift: the Aperture Correction to Magnitudes (1972) (82)
- Limits on the Local Deviation of the Universe from a Homogeneous Model. (1972) (79)
- Cosmology: A search for two numbers (1970) (78)
- Steps Toward the Hubble Constant. Calibration of the Linear Sizes of Extra-Galactic H II Regions (1974) (77)
- Cepheid Calibration of the Peak Brightness of Type Ia Supernovae: Calibration of SN 1990N in NGC 4639 Averaged with Six Earlier Type Ia Supernova Calibrations to Give H0 Directly (1996) (77)
- The vertical height of the horizontal branch: the range in the absolute magnitudes of RR Lyrae stars in a given globular cluster (1990) (75)
- Evidence for the Occurrence of Violent Events in the Nuclei of Galaxies (1963) (75)
- Spectra of the two brightest objects in the amorphous galaxy NGC 1569 : superluminous young star clusters - or stars in a nearby peculiar galaxy ? (1985) (75)
- The Oosterhoff period groups and the age of globular clusters. II. Properties of RR Lyrae stars in six clusters: the P-L-A relation. (1981) (75)
- Steps toward the Hubble constant. VII. Distances to NGC 2403, M101, and the Virgo cluster using 21 centimeter line widths compared with optical methods: The global value of H/sub 0/ (1976) (75)
- The Classification of Galaxies: Early History and Ongoing Developments (2005) (73)
- High-latitude reflection nebulosities illuminated by the galactic plane (1976) (72)
- NEW SUBDWARFS. II. RADIAL VELOCITIES, PHOTOMETRY, AND PRELIMINARY SPACE MOTIONS FOR 112 STARS WITH LARGE PROPER MOTION. (1969) (72)
- The infall velocity toward Virgo, the Hubble constant, and a search for motion toward the microwave background (1985) (70)
- The Deep Universe (1995) (70)
- The Oosterhoff period groups and the age of globular clusters. I. Photometry of cluster variables in M 15. (1981) (68)
- The Las Campanas survey of bright southern galaxies. II - New classifications for 153 systems (1979) (68)
- Comparison of Distances from RR Lyrae Stars, the Tip of the Red Giant Branch, and Classical Cepheids (2007) (67)
- Inhomogeneous Stellar Models. II. Models with Exhausted Cores in Gravitational Contraction. (1952) (66)
- Observational Approach to Evolution. I. Luminosity Functions. (1957) (65)
- The velocity field of bright nearby galaxies. III - The distribution in space of galaxies within 80 megaparsecs - The north galactic density anomaly (1980) (65)
- Absolute Magnitudes of E and so Galaxies in the Virgo and Coma Clusters as a Function of U - B Color (1972) (63)
- The absolute magnitudes of RR Lyrae stars and the age of the galactic globular cluster system (1990) (63)
- Atlas of Galaxies Useful for Measuring the Cosmological Distance Scale (1988) (62)
- Rotational velocities and central velocity dispersions for a sample of S0 galaxies (1983) (62)
- Cepheid Calibration of the Peak Brightness of Type Ia Supernovae. VI. SN 1960F in NGC 4496A (1996) (62)
- The Oosterhoff Period-Metallicity Relation for RR Lyrae Stars at the Blue Fundamental Edge of the Instability Strip. I. (1993) (62)
- The galactic cluster M 67 and its significance for stellar evolution. (1955) (61)
- New period-luminosity and period-color relations of classical Cepheids. II. Cepheids in LMC (2004) (60)
- Bias Properties of Extragalactic Distance Indicators. VIII. H0 from Distance-limited Luminosity Class and Morphological Type-Specific Luminosity Functions for Sb, Sbc, and Sc Galaxies Calibrated Using Cepheids (1999) (60)
- The Double Cepheid CE Cassiopeiae in NGC 7790: Tests of the Theory of the Instability Strip and the Calibration of the Period-Luminosity Relation (1969) (60)
- Photometric Data for the Old Galactic Cluster NGC 188. (1962) (60)
- The Virgo Cluster Distance from 21 Centimeter Line Widths (1997) (59)
- Steps toward the Hubble constant. III. The distance and stellar content of the M101 group of galaxies (1974) (58)
- The redshift-distance relation. VIII. Magnitudes and redshifts of southern galaxies in groups: A further mapping of the local velocity field and an estimate of q$sub 0$ (1975) (58)
- The velocity field of bright nearby galaxies. II - Luminosity functions for various Hubble types and luminosity classes - The peculiar motion of the local group relative to the Virgo cluster (1979) (58)
- On the Sensitivity of the Cepheid Period-Luminosity Relation to Variations of Metallicity (1999) (58)
- The surface brightness test for the expansion of the universe. II. Radii, surface brightness, and absolute magnitude correlations for nearby E galaxies (1990) (57)
- NEW DETERMINATION OF THE HUBBLE CONSTANT FROM GLOBULAR CLUSTERS IN M87. (1968) (56)
- The expansion field: the value of H0 (2008) (56)
- Optical redshifts for 719 bright galaxies (1978) (54)
- Observational Approach to Evolution. II. a Computed Luminosity Function for K0-K2 Stars from M_{v} = +5 to M_{v} = - 4.5. (1957) (54)
- Steps toward the Hubble constant. II. The brightest stars in late-type spiral galaxies (1974) (53)
- The Hubble diagram in V for supernovae of Type Ia and the value of H(0) therefrom (1993) (52)
- H I detection survey of a complete magnitude-limited sample of dwarf irregular galaxies in the Virgo Cluster area (1987) (50)
- Cepheid Calibration of the Peak Brightness of Type Ia Supernovae. X. SN 1991T in NGC 4527 (2000) (49)
- On the Effect of Fraunhofer Lines on u, b, V Measurements. (1962) (49)
- Absolute Magnitudes of Cepheids. III. Amplitude as a Function of Position in the Instability Strip: a Period-Luminosity Relation (1971) (49)
- New photoelectric observations of stars in the old galactic cluster M67 (1964) (49)
- Three-color photometry of the bright stars in the globular cluster M92 (1966) (47)
- On the Existence of Subdwarfs in the (MBol, log Te)-Diagram (1959) (46)
- Bias Properties of Extragalactic Distance Indicators. IV. Demonstration of the Population Incompleteness Bias Inherent in the Tully-Fisher Method Applied to Clusters (1995) (46)
- The Population Concept, Globular Clusters, Subdwarfs, Ages, and the Collapse of the Galaxy (1986) (45)
- The Deep Universe: Saas-Fee Advanced Course 23. Lecture Notes 1993. Swiss Society for Astrophysics and Astronomy (1995) (45)
- The redshift-distance relation. IV. The composite nature of N galaxies, their Hubble diagram, and the validity of measured redshifts as distance indicators. (1973) (44)
- Bias properties of extragalactic distance indicators. 3: Analysis of Tully-Fisher distances for the Mathewson-Ford-Buchhorn sample of 1355 galaxies (1994) (44)
- The Metallicity Dependence of the Fourier Components of RR Lyrae Light Curves is the Oosterhoff-Arp-Preston Period Ratio Effect in Disguise (2004) (44)
- The Surface Brightness Test for the Expansion of the Universe. III. Reduction of Data for the Several Brightest Galaxies in Clusters to Standard Conditions and a First Indication That the Expansion Is Real (1991) (44)
- On the Optical Identification of Eleven New Quasi-Stellar Radio Sources. (1965) (44)
- Globular cluster ages determined from the Oosterhoff period−metallicity effect using oxygen-enhanced isochrones. III (1993) (43)
- Three-Color Photometry in the Globular Cluster M3. (1956) (42)
- The extension of the Hubble diagram. I. New redshifts and BVR photometry of remote cluster galaxies, and an improved richness correction (1976) (42)
- The Cepheid distance to NGC 5253: Calibration of M(max) for the type IA supernovae SN 1972E and SN 1895B (1994) (41)
- The Tolman Surface Brightness Test for the Reality of the Expansion. I. Calibration of the Necessary Local Parameters (2001) (41)
- BIAS PROPERTIES OF EXTRAGALACTIC DISTANCE INDICATORS. I: THE HUBBLE CONSTANT DOES NOT INCREASE OUTWARD (1994) (41)
- On the systematic optical identification of the remaining 3C radio sources. I. A search in 47 fields (1974) (40)
- New photometric data for the old galactic cluster NGC 188 : the presence of a gap chemical composition and distance modulus. (1969) (39)
- The Age of the Oldest Stars in the Local Galactic Disk from Hipparcos Parallaxes of G and K Subgiants (2003) (39)
- On the Predicted and Observed Color Boundaries of the RR Lyrae Instability Strip as a Function of Metallicity (2005) (39)
- On the optical search for the X-ray sources Cyg X-1 and Cyg X-2. (1967) (39)
- CEPHEIDS AS DISTANCE INDICATORS WHEN USED NEAR THEIR DETECTION LIMIT (1988) (38)
- Redshifts of Nine Radio Galaxies Including the Abnormal System 3c 305 (1966) (38)
- The brightest stars in nearby galaxies. VI - Cepheids and the brightest stars in WLM (1985) (38)
- THE REDDENING, AGE DIFFERENCE, AND HELIUM ABUNDANCE OF THE GLOBULAR CLUSTERS M3, M13, M15, AND M92. (1969) (38)
- The Hubble constant as derived from 21 cm linewidths (1984) (37)
- The Color-Magnitude Diagram for the Galactic NGC 7789. (1958) (37)
- On the warped optical plane of M33 (1980) (36)
- THE CORRELATION OF COLORS WITH REDSHIFTS FOR QSS LEADING TO A SMOOTHED MEAN ENERGY DISTRIBUTION AND NEW VALUES FOR THE K CORRECTION. (1966) (36)
- Rapid Changes in the Optical Intensity and Radial Velocities of the X-Ray Source SCO X-1 (1968) (35)
- Star formation rates, galaxy morphology and the Hubble sequence. (1986) (35)
- Centennial History of the Carnegie Institution of Washington (2005) (35)
- The Light Travel Time and the Evolutionary Correction to Magnitudes of Distant Galaxies. (1961) (34)
- The Cepheid distance to IC 4182 : calibration of MV(max) for SN Ia 1937C and the value of H0 (1992) (34)
- Evidence for a period-luminosity-amplitude relation for RR Lyrae stars. (1981) (34)
- The colour-magnitude diagram of the metal-rich globular cluster NGC 6712. (1966) (34)
- The Oosterhoff period effect: luminosities of globular cluster zero-age horizontal branches and field RR Lyrae stars as a function of metallicity (1990) (33)
- The Hubble Diagram for Supernovae of Type Ia. II. The Effect on the Hubble Constant of a Correlation between Absolute Magnitude and Light Decay Rate (1995) (33)
- ON THE NATURE OF FAINT BLUE OBJECTS IN HIGH GALACTIC LATITUDES. II. SUMMARY OF PHOTOMETRIC RESULTS FOR 301 OBJECTS IN SEVEN SURVEY FIELDS. (1969) (33)
- The Absolute Magnitude of First-Ranked Cluster Galaxies as a Function of Cluster Richness (1976) (33)
- Stellar Groups, IV. The Groombridge 1830 Group of High Velocity Stars and Its Relation to the Globular Clusters (1959) (32)
- Steps toward the Hubble Constant. X. The Distance of the Virgo Cluster Core Using Globular Clusters (1995) (32)
- SPECTROSCOPIC AND PHOTOMETRIC DATA FOR A SAMPLE OF QUASI-STELLAR OBJECTS IDENTIFIED BY THEIR INFRARED EXCESS. (1968) (32)
- Bias Properties of Extragalactic Distance Indicators. II. Bias Corrections to Tully-Fisher Distances for Field Galaxies (1994) (31)
- Studies of the Virgo cluster. IV - An Atlas of Virgo cluster spiral galaxies: The luminosity range within a given spiral type (1985) (31)
- The Small-Scale Clustering Properties of Dwarf Galaxies (1991) (30)
- THE SECOND-ORDER TERM IN THE REDSHIFT-MAGNITUDE RELATION (1956) (30)
- STARS OBSERVED PHOTOELECTRICALLY NEAR QUASARS AND RELATED OBJECTS. (1971) (29)
- NGC 4286 and NGC 3377A: Galaxies with Mixed Morphologies between the Dwarf Im and dE/dSO Types (1991) (29)
- The surface brightness test for the expansion of the universe. I - Properties of Petrosian metric diameters (1990) (29)
- The Virgo cluster. I. The equality of mean redshifts of E and S galaxies near the cluster center. (1976) (29)
- On the Nature of Faint Blue Objects in High Galactic Latitudes. I. Photometry, Proper Motions, and Spectra in PHL Field 1:36+6° and Richter Field M3, II (1967) (28)
- The Ages of M67, NGC 188, M3, M5, and M13 According to Hoyle's 1959 Models. (1962) (28)
- New subdwarfs. IV. UBV photometry of 1690 high-proper-mation stars. (1986) (27)
- Bias Properties of Extragalactic Distance Indicators. V. H 0 From Luminosity Functions of Different Spiral Types and Luminosity Classes Corrected for Bias (1996) (27)
- The color-magnitude diagram of the globular cluster M 92 (1953) (27)
- THE TOLMAN SURFACE BRIGHTNESS TEST FOR THE REALITY OF THE EXPANSION. V. PROVENANCE OF THE TEST AND A NEW REPRESENTATION OF THE DATA FOR THREE REMOTE HUBBLE SPACE TELESCOPE GALAXY CLUSTERS (2009) (27)
- Cepheids in Galactic Clusters. I. CF Cass in NGC 7790. (1958) (26)
- The brightest stars in nearby galaxies. III - The color-magnitude diagram for the brightest red and blue stars in M81 and Holmberg IX. IV - The color-magnitude diagram for the brightest red and blue stars in NGC 2403 (1984) (26)
- A Search for a Cluster of Galaxies Associated with 3c 48 Using the Kodak Special Plate Type 087-01 (1966) (26)
- Optical Identification of New Quasi-Stellar Radio Sources. (1965) (26)
- Practical Cosmology: Inventing the Past (1995) (25)
- Temperature Differences in the Cepheid Instability Strip Require Differences in the Period-Luminosity Relation in Slope and Zero Point (2008) (25)
- Distance to M33 determined from magnitude corrections to Hubble's original cepheid photometry (1983) (25)
- Rapid Photometric and Spectroscopic Variations of the X-Ray Source CYG X-2 (1967) (25)
- ON THE OPTICAL IDENTIFICATION OF THE X-RAY SOURCE CEN XR-2 AS WX CEN. (1968) (24)
- THE LINEARITY OF THE COSMIC EXPANSION FIELD FROM 300 TO 30, 000 km s−1 AND THE BULK MOTION OF THE LOCAL SUPERCLUSTER WITH RESPECT TO THE COSMIC MICROWAVE BACKGROUND (2009) (24)
- The Oosterhoff Period Groups and the Age of Globular Clusters - Part Four - Field Rr-Lyrae Stars - Age of the Galactic Disk (1982) (23)
- The redshift-distance relation. VI. The Hubble diagram from S20 photometry for rich clusters and sparse groups: a study of residuals (1973) (23)
- H 0 = 43 plus or minus 11 KM S -1 MPC -1 Based on Angular Diameters of High-Luminosity Field Spiral Galaxies (1993) (23)
- Linear Polarization of the Hα Emission Line in the Halo of M82 and the Radiation Mechanism of the Filaments (1972) (23)
- The distance to M 33 based on a new study of its Cepheids. (1983) (22)
- The HR diagrams for the globular clusters M 92 and M 3. (1952) (22)
- OPTICAL VARIATION OF THE NUCLEI OF THREE COMPACT GALAXIES TOGETHER WITH NEW PHOTOMETRIC DATA FOR SEYFERT GALAXIES. (1967) (22)
- UBVRIHKL PHOTOMETRY OF THE CENTRAL REGION OF M31. (1969) (22)
- The brightest stars in nearby galaxies. II - The color-magnitude diagram for the brightest red and blue stars in M101 (1983) (22)
- A case for H0 = 42 and Omega(0) = 1 using luminous spiral galaxies and the cosmological time scale test (1988) (22)
- Photoelectric Observations of the Interacting Galaxies VV 117 and VV 123 Related to the Time of Formation of Their Satellites. (1963) (22)
- The disk and halo densities at the plane from star-counts in the Galactic poles (1987) (21)
- The redshift-distance relation. VIII - Magnitudes and redshifts of southern galaxies in groups: A further mapping of the local velocity field and an estimate of the deceleration parameter (1975) (21)
- The region of instability for RR Lyrae stars in the color-magnitude diagram for M3 (1955) (20)
- The galactic cluster M 11. (1956) (19)
- The brightest stars in nearby galaxies. VIII - Cepheids and bright stars in NGC 3109 (1988) (19)
- ADDITIONAL DATA ON THE OPTICAL VARIATIONS IN 3C 371 AND OTHER PROPERTIES OF N-TYPE GALAXIES. (1967) (19)
- The Optical Identification of Three New Radio Objects of the 3c 48 Class. (1964) (19)
- U, V, W velocity components for the old disk using radial velocities of 1295 stars in the three cardinal Galactic directions (1987) (19)
- The Tolman Surface Brightness Test for the Reality of the Expansion. III. Hubble Space Telescope Profile and Surface Brightness Data for Early-Type Galaxies in Three High-Redshift Clusters (2001) (19)
- The Main Sequence of the Globular Cluster M13. (1959) (18)
- Intensity Variations of 3c 48, 3c 196, and 3c 273 IN Optical Wavelengths. (1964) (18)
- Absolute Proper Motions to B ~ 22.5. V. Detection of Sagittarius Dwarf Spheroidal Debris in the Direction of the Galactic Anticenter (2002) (18)
- Classification and Stellar Content of Galaxies Obtained from Direct Photography (1975) (18)
- Book-Review - a Revised Shapley-Ames Catalog of Bright Galaxies (1981) (18)
- The Tolman Surface Brightness Test for the Reality of the Expansion. II. The Effect of the Point-Spread Function and Galaxy Ellipticity on the Derived Photometric Parameters (2001) (17)
- On the intrinsic widths of the subgiant and horizontal branch sequences in the globular cluster M3 (1982) (17)
- Isochrones, Ages, Curves of Evolutionary Deviation, and the Composite C-M Diagram for Old Galactic Clusters (1969) (17)
- Bias Properties of Extragalactic Distance Indicators. VI. Luminosity Functions of M31 and M101 Look-alikes Listed in the RSA2: H0 Therefrom (1996) (17)
- Observational Approach to Evolution. III. Semiempirical Evolution Tracks for M67 and M3. (1957) (17)
- Precise Positions of Radio Sources. II. Optical Measurements (1970) (17)
- Photometry of the Variable Stars in the Globular Cluster NGC 6712 (1966) (17)
- Properties of Two Intergalactic Globular Clusters. (1958) (17)
- The Change of Intensity, Color, Line Strength, and Line Position in the QSS 3C 446 during the 1966 Outburst (1966) (16)
- The Carnegie Atlas of Galaxies, Volumes 1 and 2 (1995) (16)
- Intensity Variations of Quasi-Stellar Sources in Optical Wavelengths (1966) (16)
- The brightest stars in nearby galaxies. V. Cepheids and the brightest stars in the dwarf galaxy Sextans B compared with those in Sextans A. (1985) (16)
- EXAMINATION OF THE EVIDENCE FOR THE EXISTENCE OF PYGMY STARS. (1967) (16)
- Bias Properties of Extragalactic Distance Indicators. XI. Methods to Correct for Observational Selection Bias for RR Lyrae Absolute Magnitudes from Trigonometric Parallaxes Expected from the Full-Sky Astrometric Mapping Explorer Satellite (2002) (16)
- The globular cluster NGC 4147. (1955) (16)
- Explorer of the Universe: A Biography of George Ellery Hale (1966) (16)
- The abundance and morphological segregation of dwarf galaxies in the field (1990) (16)
- The Case for H 0 approximately equal to 55 from the 21 Centimeter Line Width--Absolute Magnitude Relation for Field Galaxies (1988) (16)
- The luminosity function for the globular cluster M3 (1954) (16)
- Neutral hydrogen detection survey of dwarf galaxies. II. Faint Virgo dwarfs and a field sample (1989) (15)
- The brightest stars in nearby galaxies. VII - The Pegasus and Leo A Im V dwarfs (1986) (15)
- A four-color photometric system applied to line blanketing of subdwarfs. (1963) (15)
- H[SUB]0[/SUB] found by comparing linear diameters of M31 with similar field galaxies (1993) (14)
- The Visual Multiple System Containing Beta Lyrae. (1962) (14)
- The Cepheid Distance to NGC 5236 (M 83) with the VLT (2003) (14)
- An Alternate Calculation of the Distance to M87 Using the Whitmore et al. Luminosity Function for Its Globular Clusters: H0 Therefrom (1996) (14)
- Remote halo globular cluster Palomar 5 (1977) (14)
- Redshifts of Nine Radio Galaxies (1967) (13)
- THE MOUNT WILSON HALO MAPPING PROJECT 1975-1985 I: THE UBV(RI)MW PHOTOMETRIC SYSTEM COMPARED WITH OTHER STANDARD SYSTEMS: THE ADOPTED TRIGONOMETRIC HR DIAGRAM IN (R-I)MW AND (V-I)MW (1997) (13)
- On the Intrinsic Colors of RR Lyrae Stars in M3. (1959) (13)
- The Redshift-Distance Relation. IXa. Reinterpretation of the Local Group Deceleration Data Emphasizing the Kahn-Woltjer Mass Determination (1987) (13)
- Distance and absolute magnitudes of the brightest stars in the dwarf galaxy Sextans A (1982) (13)
- Confirmation of previous ground-based Cepheid P-L zero-points using Hipparcos trigonometric parallaxes (1998) (12)
- A preliminary photoelectric sequence in the galaxy M33 of the local group (1974) (12)
- Evidence for Local Peculiar Velocities (1980) (12)
- The Im/dE,N mixed morphology dwarf ESO 359-G29 as a probe of a massive halo in NGC 1532 (1993) (12)
- The Exploding Galaxy M82: Evidence for the Existence of a Large-Scale Magnetic Field (1964) (11)
- The Distance to the Virgo Cluster (1998) (11)
- KINEMATICS AND GALACTIC STRUCTURE (1987) (11)
- Periods and light curves of 16 Cepheid variables in IC 1613 not completed by Baade (1990) (11)
- On the systematic optical identification of the remaining 3C radio sources. II - New data for 50 fields (1978) (11)
- The globular cluster Palomar 13 (1985) (11)
- The effect of the perturbation of the local velocity field by Virgo on the calculation of differential luminosity functions (1984) (11)
- THE COLOR-MAGNITUDE DIAGRAM FOR THE GLOBULAR CLUSTER NGC 5897. (1968) (10)
- The Color-Magnitude Diagram for the Abnormally Strong-Line Globular Cluster M69 (1968) (10)
- Axial Rotation and Stellar Evolution. (1955) (10)
- The dependence of the cool matter content on galaxy morphology in galaxies of types E/S0, S0, and SA (1993) (10)
- Faint photometry in M15 - The intrinsic width of the main sequence, the luminosity function, and the density gradient of faint field stars (1977) (10)
- Hubble constant from Pritchet and von den Bergh's nova distance to the Virgo cluster (1988) (10)
- New subdwarfs. V - Radial velocities for 889 high-proper-motion stars measured with the Mount Wilson 100 inch reflector (1986) (10)
- Results of a Pilot Program to Discover New Subdwarfs in the Solar Neighborhood. (1964) (10)
- H I properties of dwarf irregular galaxies in the Virgo Cluster (1985) (9)
- New subdwarfs. III. On obtaining the vertical galactic metallicity gradient from the kinematics of nearby stars. (1981) (9)
- The Mount Wilson Halo Mapping Project 1975–1985. II. Photometric Properties of the Mount Wilson Catalogue of Photographic Magnitudes in Selected Areas 1–139 (2001) (9)
- Absorption-line redshifts of galaxies in remote clusters obtained with a sky-subtraction spectrograph using an SIT television detector (1975) (9)
- The value of Ho (1983) (9)
- Bias Properties of Extragalactic Distance Indicators. VII. Correlation of Absolute Luminosity and Rotational Velocity for SC Galaxies over the Range of Luminosity Class from I to III-IV (1999) (9)
- Three-color photometry of the metal-riche globular cluster NGC 6171. (1964) (9)
- Cepheids in Galactic Clusters.VI. U SGR in M25. (1960) (9)
- On the Optical Identification of Cygnus X-1 (1971) (9)
- The Early Palomar Program (1950–1955) for the Discovery of Classical Novae in M81: Analysis of the Spatial Distribution, Magnitude Distribution, and Distance Suggestion (1999) (9)
- The Mount Wilson Observatory : breaking the code of cosmic evolution (2004) (8)
- An Indication of Gaps in the Giant Branch of the Globular Cluster M15 (1968) (8)
- Bias Properties of Extragalactic Distance Indicators. IX. Absolute Luminosity and Line‐Width Distributions for Galaxy Types along the Hubble Sequence Based on Distance‐limited Samples from the Revised Shapley‐Ames Catalog (2000) (8)
- COLORS, LINEAR POLARIZATION, AND PRELIMINARY MAPPING OF THE MAGNETIC FIELD FOR THE OUTER FILAMENTS IN THE EXPLODING GALAXY M82. (1969) (8)
- Cepheids in Galactic Clusters.IV. DL CAS in NGC 129. (1959) (8)
- AMPLITUDE FINE STRUCTURE IN THE CEPHEID P–L RELATION. I. AMPLITUDE DISTRIBUTION ACROSS THE RR LYRAE INSTABILITY STRIP MAPPED USING THE ACCESSIBILITY RESTRICTION IMPOSED BY THE HORIZONTAL BRANCH (2010) (8)
- The First 50 Years at Palomar: 1949–1999 The Early Years of Stellar Evolution, Cosmology, and High-Energy Astrophysics (1999) (8)
- Intrinsic width and luminosity function of the M92 main sequence (1983) (8)
- The first four years of extragalactic research with the Hale 200-inch telescope (1954) (8)
- Results of Five Nights of Continuous Monitoring of the Optical Flux from SCO X-1 (1969) (8)
- The Colors of Some High-Latitude Blue Stars. (1965) (7)
- THE REDDENING AND EXTINCTION OF A CLUSTER OF BRIGHT GALAXIES NEAR THE GALACTIC PLANE IN CYGNUS. (1976) (7)
- Edwin HUBBLE 1889-1953. (1989) (7)
- Identifications of Six Faint Radio Sources with Quasi-Stellar Objects. (1965) (7)
- Study of period changes for 38 RR Lyrae variables in the globular cluster M15 (1981) (7)
- Candidate galaxies for study of the local velocity field and distance scale using Space Telescope. I. The most easily resolved (1985) (7)
- Malmquist Bias and Completeness Limits (2000) (7)
- Comparison of Hipparcos Trigonometric and Mount Wilson Spectroscopic Parallaxes for 90 Subgiants that Defined the Class in 1935 (2015) (7)
- Cepheids, Supernovae, Ho, and the Age of the Universe (2001) (7)
- PRECISE POSITIONS OF RADIO SOURCES. III. COMPARISON OF OPTICAL AND RADIO MEASUREMENTS. (1970) (7)
- PHOTOMETRIC RESULTS OF A SPECIAL SURVEY FOR INTERLOPERS (1965) (6)
- The Determination of the Deceleration Parameter from Local Data (1980) (6)
- The Luminosity Function of Globular Clusters as an Extragalactic Distance Indicator (1999) (6)
- The red-shift (1956) (6)
- SO and Smooth-Arm Sa’s within the Hubble Sequence (1983) (6)
- Evidence for an Explosion in the Center of the Galaxy M82. (1963) (6)
- On the formation and age of the galaxy. (1990) (6)
- The brightest stars in nearby galaxies. I. The color-magnitude diagram and luminosity function for IC 1613 (1976) (6)
- Halo globular cluster NGC 5053 (1977) (6)
- Bias Properties of Extragalactic Distance Indicators. X. The Teerikorpi Cluster Population Incompleteness Bias for a Modified Lemaître-Robertson-Hubble-Humason Distance Method That Uses Luminosity Functions (2002) (5)
- LOW-DISPERSION SPECTROSCOPIC OBSERVATIONS OF PROPER MOTION STARS WITH ULTRAVIOLET EXCESSES (1965) (5)
- The Ages of the Open Cluster NGC 188 and the Globular Clusters M3, M5, and M13 Compared with the Hubble Time. (1961) (5)
- High precision photometry of 10000 stars in M3 (1986) (5)
- The time scale test for Ω: the inverse Hubble constant compared with the age of the universe (1998) (5)
- THE SYSTEMATICS OF COLOR-MAGNITUDE DIAGRAMS AND STELLAR EVOLUTION (1956) (5)
- Age of M92 and M15 (1983) (5)
- The Distance Scale (1962) (5)
- PHOTOELECTRIC OBSERVATIONS OF RS OPHIUCHI (1958) (5)
- The Hubble Constant and HST (2010) (5)
- The determination of cosmological parameters (1979) (4)
- The P-L relation for RR Lyrae-like stars with 0.8d (1994) (4)
- Spectroscopy and photometry of the distant radio galaxy 3C 343.1 (1977) (4)
- The Color-Magnitude Diagrams of Galactic and Globular Clusters and their Interpretation as Age Groups (1958) (4)
- The evidence for the long distance scale with H_0<65 (1996) (4)
- Two Lectures on the Observational Determination of the Hubble Expansion Rate (1995) (4)
- The search for the curvature of space (1992) (4)
- Candidate Galaxies for Study of the Local Velocity Field and Distance Scale Using Space Telescope - Part Three - Galaxies in the Virgo Cluster Core (1985) (3)
- The Local Velocity Field And The Hubble Constant (1996) (3)
- ON THE RATIO OF EXTINCTION TO REDDENING FOR INTERSTELLAR MATTER USING GALAXIES. I. A LIMIT ON THE NEUTRAL EXTINCTION FROM PHOTOMETRY OF THE 3C 129 GROUP. (1975) (3)
- The Age of the Galaxies and Globular Clusters: Problems of Finding the Hubble Constant and Deceleration Parameter (1971) (3)
- 3C 196 as a Second Radio Star (1962) (3)
- Evidence that the expansion is real (1992) (3)
- The Solar Curve of Growth for Lines of CR I. (1951) (3)
- Cepheid Calibration of the Peak Brightness of Type Ia Supernovae. IX. SN 1989B in NGC 3627 (1999) (3)
- The Brightest Stars in Nearby Galaxies IX: Comparison of Ground-Based and HST Phtotmetry of the Brightest Stars in IC 4182 (1996) (3)
- An investigation of the variable stars in the globular cluster NGC 6712. (1963) (3)
- The Mount Wilson Halo Mapping Project (1983) (3)
- The Distance to the Virgo Cluster from a Recalibrated Tully-Fisher Relation Based on HST Cepheids and a Demonstrated Teerikorpi Cluster Incompleteness Bias (2006) (2)
- The Mount Wilson Observatory (2004) (2)
- Opening the Last Frontier (1973) (2)
- Main-sequence photometry and the age of the metal-rich globular cluster NGC 6171 (1984) (2)
- The extragalactic distance scale and the Hubble constant (1982) (2)
- Ho from Type Ia Supernovae (2000) (2)
- The Birth and Death of a Star (1957) (2)
- Episodes in the Discovery of Variations in the Chemical Composition of Stars and Galaxies (2000) (2)
- On the Mass of the RR Lyrae Stars. (1956) (2)
- The Absolute Magnitudes of RR Lyrae Stars and the Age of the Galaxy (1989) (2)
- Episodes in the Development of the Hubble Galaxy Classification (2004) (2)
- Cepheids in the Dwarf Galaxies Sextans A, Sextans B and WLM (1984) (2)
- Bias Properties of Extragalactic Distance Indicators XII: Bias Effects of Slope Differences and Intrinsic Dispersion on Tully-Fisher Distances to Galaxy Clusters with Application to the Virgo Cluster (2007) (2)
- The Stars Within 15 Parsecs of the Sun (1958) (2)
- FIRST RESULTS OF THE LAS CAMPANAS SURVEY TO CLASSIFY SOUTHERN GALAXIES PHOTOGRAPHED WITH THE DU PONT 2.5-METER REFLECTOR (1978) (2)
- VizieR Online Data Catalog: Revised Shapley-Ames Catalog of Bright Galaxies (Sandage+, 1981) (1995) (2)
- The cosmological problem (1963) (2)
- Observations of the 4000 Å break strength in the spectra of elliptical and S0 galaxies (1989) (2)
- Clusters of Galaxies: Properties of Galaxies in Groups and Clusters (1990) (2)
- Observational Cosmology 1920–1985: An Introduction to the Conference (1987) (2)
- Photometry in the Magellanic Clouds, III. The Cluster NGC 1783 (1960) (2)
- BEGINNINGS OF OBSERVATIONAL COSMOLOGY IN HUBBLE'S TIME: HISTORICAL OVERVIEW (2004) (2)
- Group characteristics of the RR Lyrae stars in M 3. (1954) (1)
- A decade of Hubble Space Telescope science: H0 from Type Ia supernovae (2003) (1)
- Review Paper: A New ERA in Cosmology: The Use of Radio Galaxies, Quasi-Stellar Sources and Quasi-Stellar Galaxies as Probes. (1965) (1)
- Maximum Luminosities of Type Ia Supernovae from Cepheid Distances and the Value of H o (1997) (1)
- DISTANCES TO GALAXIES. THE HUBBLE CONSTANT, THE FRIEDMANN TIME, AND THE EDGE OF THE WORLD. (1972) (1)
- The size and shape of the Universe: the quest for the curvature of space (1990) (1)
- Erratum: "optical Redshifts for 719 Bright Galaxies" [ASTRON. J. 83, 904 (1978)]. (1978) (1)
- Reply to Zwicky's Comments (1967) (1)
- COMMENT ON THE 1925 TRUMPLER PAPER ON STELLAR EVOLUTION (1988) (1)
- A Summary of the Observational Data Concerning the Apparent Expansion of the Universe (1955) (1)
- The deceleration of nearby galaxies (1980) (1)
- Variable Stars in the Nearby Galaxy NGC 2403. (1966) (1)
- TIME SCALE FOR CREATION. (1968) (1)
- Erratum: Identification of Six Faint Radio Sources with Quasi-Stellar Objects (1966) (1)
- On the Nature of Ryle and Bailey's Candidate Star for the Pulsating Radio Source CP 1919 (1969) (1)
- H 0 from Type Ia supernovae (2003) (1)
- VARIABLE STARS FOUND BY EDWIN HUBBLE IN THE GLOBULAR CLUSTER NGC 7006 (1954) (1)
- Photometry in the Magellanic Clouds: I. Standard Sequences (1960) (1)
- Candidate Galaxies for Study of the Local Velocity Field and Distance Scale Using Space Telescope - Part Two - the More Difficult Cases (1985) (1)
- The distance of the Centaurus group - a test for various distance indicators. (1991) (1)
- Brightest stars in galaxies as distance indicators (1986) (1)
- The Differences Among Globular Clusters: Symposium Held at the 103rd Meeting of the American Astronomical Society in Toronto, Ontario, on August 31, 1959 (1959) (0)
- Radial Velocities for High Proper Motion Stars (Fouts+, 1986) (1995) (0)
- Joint effort. (1973) (0)
- The value of Ho. [effects of distance indicator selection bias] (1983) (0)
- Hubble & Humason's Evaluation of the Cosmological Expansion (1999) (0)
- Erratum - on the Warped Optical Plane of M33 (1981) (0)
- New Calibrations of Pulsational Absolute Magnitudes of Field RR Lyrae Stars Using Revised Dependencies of Temperatures, Masses, and Periods on Metallicity (2004) (0)
- The Cepheid Distance to IC 4182 and the Absolute Magnitude of SN 1937C (1992) (0)
- Book Review:The Age of the Earth. G. Brent Dalrymple (1992) (0)
- Second Conference on Co-ordination of Galactic Research (1959) (0)
- Books-Received - Carnegie Atlas of Galaxies (1995) (0)
- How good are SNe Ia as standard candles? A short history (2001) (0)
- Solar Excitation Temperature of V I. (1950) (0)
- The morphology-density relation for dwarf galaxies (1990) (0)
- Radio Galaxies and Quasars, II (1968) (0)
- H0, q0 and the local velocity field (2011) (0)
- The color-magnitude diagram of the nuclear globular cluster NCC 6356 compared with halo clusters. (1959) (0)
- Morphological and physical characteristics of the Virgo cluster: first results from the Las Campanas photographic survey. (1985) (0)
- Could our Understanding of Post-Main Sequence Stellar Evolution have been Hastened? The, Errantly Dismissed, 1930's Discovery of Subgiant Stars by the Mount Wilson Observatory Spectroscopists (2014) (0)
- Twinkle Twinkle: Also explode explode, collapse collapse, nucleosynthesize nucleosynthesize. It turns out that our nightly companions do more than just sparkle-and therein lies the tale of our own origins. (2000) (0)
- Hopkins Ultraviolet Explorer (HUBE) (1995) (0)
- H(0) from HST (1996) (0)
- The Evolution of the Stars (1955) (0)
- Book Reviews: The Astronomer's Universe (1959) (0)
- Color-Magnitude Diagram of the Strong-Line Globular Cluster NGC 6712. (1962) (0)
- OBSERVATIONAL PROPERTIES OF RADIO GALAXIES AND QUASI-STELLAR SOURCES. (1968) (0)
- PROCEDURE TO FIND , AND FOR CEPHEIDS FROM ISOLATED OBSERVAUSING THE COMPLETE LIGHT CURVE IN V (1997) (0)
- The Time Scale for Creation (Part 2) (1969) (0)
- Positive Curvature of the Hubble Diagram for Galaxy Clusters. (1977) (0)
- Isaac Newton Telescope (1969) (0)
- The Hubble diagram for red magnitudes of bright cluster galaxies (1977) (0)
- The age of the galactic disk (1988) (0)
- 119. First True Radio Star (1979) (0)
- Calibration of Supernovae of Type i as Standard Candles (1990) (0)
- COMMENT ON THE 1930 TRUMPLER PAPER ON INTERSTELLAR EXTINCTION (1988) (0)
- Optical Studies of Extragalactic Radio Sources (1968) (0)
- H0, q0 and the local velocity field. [Hubble and deceleration constants in Big Bang expansion (1982) (0)
- Erratum: “Absolute Proper Motions to B ~ 22.5. V. Detection of Sagittarius Dwarf Spheroidal Debris in the Direction of the Galactic Anticenter” (ApJ, 575, L67 [2002]) (2003) (0)
- Palomar Observatory Hale Telescope : Prime Focus Nebular Spectrograph Log Book (1995) (0)
- Procedure to find B, R and I for Cepheids from isolated observations using the complete light curve in V. (1997) (0)
- Palomar Observatory Hale Telescope : Prime Focus Nebular Spectrograph Log Book (1995) (0)
- The classification and evolutionary sequence of galaxies. (1986) (0)
- A study of the globular cluster M3 (1953) (0)
- Horace Welcome Babcock (2006) (0)
- 37. Continuum Colors of the Sun, χ Pegasi, and HD 19445 as Related to the Position of the Metal-Poor Stars in the Color-Magnitude and Two Color Diagrams (1959) (0)
- Erratum: Absolute Magnitudes of Cepheids. III (1971) (0)
- Clusters and Associations (1959) (0)
- Luminosity Function of Galactic Clusters, Globular Clusters and Elliptical Galaxies (1958) (0)
- GLOBULAR CLUSTERS, SUBDW ARFS, AGES, AND THE COLLAPSE OF THE GALAXY (1986) (0)
- Book-Review - Annual Review of Astronomy and Astrophysics - V.28 (1991) (0)
- Calibration of Nearby Galaxy Type IA Supernovae as Standard Candles: NGC4496 and NGC4356 - CYCLE4MEDIUM (1994) (0)
- 111. Redshifts and Magnitudes of Extra-Galactic Nebulae (1979) (0)
- The Unity of the Universe (1959) (0)
- Evidence for the Existence of a Large-Scale Magnetic Field and for High-Energy Electrons in the Exploding Galaxy M82. (1964) (0)
- Cepheids and Bright Stars in NGC3109 (1988) (0)
- CLASSICAL CEPHEIDS: CORNERSTONE TO EXTRAGALACTIC DISTANCES. (1972) (0)
- A SUPERNOVA IN NGC 23 (1959) (0)
- Erratum: Precise Positions of Radio Sources. II Optical Measurements (1976) (0)
- The Oosterhoff Period Effect and Age of the Galactic Globular Cluster System (1993) (0)
This paper list is powered by the following services:
Other Resources About Allan Sandage
What Schools Are Affiliated With Allan Sandage?
Allan Sandage is affiliated with the following schools: