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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
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:
FileName Lrecl Records Explanations
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)
Byte-by-byte Description of file: table2[abcd].dat
Bytes Format Units Label Explanations
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
Note (1): From the r1/4 fit.
Byte-by-byte Description of file: table3[abcd].dat
Bytes Format Units Label Explanations
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)
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.
History: From electronic version of the journal References: Stoughton et al., Sloan Digital Sky Survey: Early Data Release (2002AJ....123..485S)
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 13-May-2003
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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