J/AJ/125/1817 SDSS Early-Type Galaxies Catalog (Bernardi+, 2003)
Early-type galaxies in the Sloan Digital Sky Survey. I. The sample.
Bernardi M., Sheth R.K., Annis J., Burles S., Eisenstein D.J.,
Finkbeiner D.P., Hogg D.W., Lupton R.H., Schlegel D.J., Subbarao M.,
Bahcall N.A., Blakeslee J.P., Brinkmann J., Castander F.J., Connolly A.J.,
Csabai I., Doi M., Fukugita M., Frieman J., Heckman T., Hennessy G.S.,
Ivezic Z., Knapp G.R., Lamb D.Q., McKay T., Munn J.A., Nichol R.,
Okamura S., Schneider D.P., Thakar A.R., York D.G.
<Astron. J. 125, 1817 (2003)>
=2003AJ....125.1817B 2003AJ....125.1817B
ADC_Keywords: Galaxy catalogs ; Galaxies, photometry ; Photometry, SDSS ;
Redshifts
Keywords: galaxies: elliptical and lenticular, cD - galaxies: evolution -
galaxies: fundamental parameters - galaxies: photometry -
galaxies: stellar content
Abstract:
A sample of nearly 9000 early-type galaxies, in the redshift range
0.01≤z≤0.3, was selected from the Sloan Digital Sky Survey (SDSS)
using morphological and spectral criteria. The paper describes how
the sample was selected, presents examples of images and
seeing-corrected fits to the observed surface brightness profiles,
describes our method for estimating K-corrections, and shows that the
SDSS spectra are of sufficiently high quality to measure velocity
dispersions accurately. It also provides catalogs of the measured
photometric and spectroscopic parameters. In related papers, these
data are used to study how early-type galaxy observables, including
luminosity, effective radius, surface brightness, color, and velocity
dispersion, are correlated with one another.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2a.dat 100 8666 SDSS Early-Type Galaxies (SDSS ETG) Catalog:
Observed Parameters (r* Band)
table2b.dat 100 8666 SDSS ETG Catalog: Observed Parameters (g* Band)
table2c.dat 100 8666 SDSS ETG Catalog: Observed Parameters (i* Band)
table2d.dat 100 8666 SDSS ETG Catalog: Observed Parameters (z* Band)
table3a.dat 110 8666 SDSS ETG Catalog: Physical Parameters (r* Band)
table3b.dat 110 8666 SDSS ETG Catalog: Physical Parameters (g* Band)
table3c.dat 110 8666 SDSS ETG Catalog: Physical Parameters (i* Band)
table3d.dat 110 8666 SDSS ETG Catalog: Physical Parameters (z* Band)
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Byte-by-byte Description of file: table2[abcd].dat
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Bytes Format Units Label Explanations
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1- 10 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
13- 21 F9.6 deg DEdeg Declination in decimal degrees (J2000)
23- 29 F7.5 --- z Redshift
31- 37 F7.5 --- e_z Error estimate in z
40- 41 I2 --- S/N Signal-to-noise ratio of the spectrum
43- 44 A2 --- Band [r* g* i* z*] Band
46- 50 F5.2 arcsec rDev The Band apparent half-light radius (1)
53- 56 F4.2 arcsec e_rDev Error estimate in rDev
59- 64 F6.3 mag magDev de Vaucouleurs Band apparent magnitude (1)
68- 72 F5.3 mag e_magDev Error estimate in magDev
75- 80 F6.3 mag magMod Model Band magnitude
84- 88 F5.3 mag e_magMod Error estimate in magMod
90- 94 F5.3 --- b/a The Band axis ratio
96-100 F5.3 --- e_b/a Error estimate in b/a
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Note (1): From the r1/4 fit.
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Byte-by-byte Description of file: table3[abcd].dat
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Bytes Format Units Label Explanations
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1- 10 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
13- 21 F9.6 deg DEdeg Declination in decimal degrees (J2000)
24- 28 F5.3 [km/s] logVDis Log of the aperture-corrected velocity
dispersion
31- 35 F5.3 [km/s] e_logVDis Error estimate in logVDis
37- 38 A2 --- Band [r* g* i* z*] Band
40- 45 F6.3 [kpc] logRad Log of Band physical half-light radius (1)
48- 52 F5.3 [kpc] e_logRad Error estimate in logRad (1)
54- 59 F6.3 mag/arcsec2 SB Band surface brightness (2)
62- 66 F5.3 mag/arcsec2 e_SB Error estimate in SB
68- 74 F7.3 mag MagDev de Vaucouleurs Band absolute magnitude
77- 82 F6.3 mag e_MagDev Error estimate in MagDev
84- 90 F7.3 mag MagMod Model Band absolute magnitude
93- 98 F6.3 mag e_MagMod Error estimate in MagMod
102-106 F5.3 mag Kcorr The band K-correction
108-110 I3 --- Nden Number of near neighbors used as an
estimate of the local density (3)
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Note (1): In units of kpc*h70-1.
Note (2): Corrected for the cosmological (1+z)4 dimming.
Note (3): 1001 = An object for which the number of neighbors was not determined;
102 = An object with ≥100 neighbors.
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History:
From electronic version of the journal
References:
Stoughton et al., Sloan Digital Sky Survey: Early Data Release
(2002AJ....123..485S 2002AJ....123..485S)
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 13-May-2003