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J/AJ/134/579 Morphologically classified galaxies from SDSS DR3 (Fukugita+, 2007)

A catalog of morphologically classified galaxies from the Sloan Digital Sky Survey: north equatorial region. Fukugita M., Nakamura O., Okamura S., Yasuda N., Barentine J.C., Brinkmann J., Gunn J.E., Harvanek M., Ichikawa T., Lupton R.H., Schneider D.P., Strauss M.A., York D.G. <Astron. J., 134, 579-593 (2007)> =2007AJ....134..579F
ADC_Keywords: Galaxy catalogs ; Morphology Keywords: catalogs - galaxies: fundamental parameters Abstract: We present a catalog of morphologically classified bright galaxies in the north equatorial stripe (230deg2) derived from the Third Data Release of the Sloan Digital Sky Survey (SDSS). Morphological classification is performed by visual inspection of images in the g band. The catalog contains 2253 galaxies complete to a magnitude limit of r=16 after Galactic extinction correction, selected from 2658 objects that are judged to be extended in the photometric catalog in the same magnitude limit. A total of 1866 galaxies in our catalog have spectroscopic information. A brief statistical analysis is presented for the frequency of morphological types and mean colors in the catalog. A visual inspection of the images reveals that the rate of interacting galaxies in the local universe is approximately 1.5% in the r≤16 sample. A verification is made for the photometric catalog generated by the SDSS, especially as to its bright-end completeness. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 134 2275 Catalog of morphologically classified galaxies
See also: II/259 : The SDSS Photometric Catalog, Release 3 (Abazajian+ 2005) II/294 : SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009) J/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002) J/AJ/125/1817 : SDSS Early-Type Galaxies Catalog (Bernardi+, 2003) http://www.sdss.org : SDSS Home Page Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [FNO2007] Running identification number 6- 24 A19 --- DR3 The DR3 photometric identification, NNNN-N-NN-NNNN-NNNN (1) 26- 34 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000) 36- 44 F9.5 deg DEdeg Declination in decimal degrees (J2000) 46- 62 A17 --- EDR The EDR photometric identification NNNN-N-NN-NNNN-NNNN (1) 64 I1 --- DR [1/3] Flag for catalog inclusion (2) 66- 67 A2 --- sp [012 :] Flag for spectroscopic target selection (3) 69- 72 F4.1 --- TT Morphology index (4) 74- 76 F3.1 --- e_TT The 1σ uncertainty in TT 78- 79 A2 --- Qual Photometric quality (5) 81- 85 F5.2 mag rmag Petrosian r magnitude (6) 87- 99 A13 --- SpecID Spectroscopic Plate-MJD-Fiber identification 101-106 F6.4 --- z ? Heliocentric redshift 108-112 F5.3 --- Con(z) ? Confidence level of redshift measurement 114-128 A15 --- Com Additional comments (8) 130-134 I5 --- PGC ? The PGC catalog number (Cat. VII/237)
Note (1): The numbers mean run (observation) - camcol (camera column) - rerun (photometric data reduction)- field - object id (see DR3, Cat. II/259 for details). Note (2): Flag for catalog inclusion as follows: 3 = both in DR3 (rmag≤16) and in EDR (rmag≤15.9) 2 = only in DR3 (rmag≤16) 1 = rmag>16 Note (3): Flag for spectroscopic target selection as follows: 0 = not targeted 1 = targeted but not observed 2 = observed 2: = fiber positioned off-nucleus, but on some other part of the object carrying the specified photometric identification Note (4): The mean of three classifiers rounded to the nearest integer or half-integer. Note (5): Photometric quality flag as follows: 0 = good photometry (typical error expected to be smaller than approximately 0.1mag based on visual estimates) 1 = photometry is accurate if one uses the magnitude given to the parent image 2 = some errors, say 0.3mag (with visual estimates), is suspected in photometry 3 = poor photometry. (Note that these flags are somewhat subjective.) 2c = suspected errors. Magnitudes may easily be obtained by applying aperture photometry centred on the designated object using parent atlas image frames 2p = suspected errors. Magnitudes may easily be obtained by applying aperture photometry centred on the designated object using child atlas image frames 3c = poor photometry. Magnitudes may easily be obtained by applying aperture photometry centred on the designated object using parent atlas image frames 3p = poor photometry. Magnitudes may easily be obtained by applying aperture photometry centred on the designated object using child atlas image frames Note (6): Of the child image after correcting for Galactic extinction. Note (8): Abbreviations used: p = peculiar, and this flag is given only when galaxies are classified into normal types, am = galaxies with an amorphous appearance, int = interacting, d-nucl = double nuclei within a single galaxy, "double" and "multiple" stand for more than one galaxy in the child field, while interactions among them are not apparent.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 07-Sep-2009
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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