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J/AJ/123/567 SDSS quasar catalog (Schneider+, 2002)
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The Sloan Digital Sky Survey quasar catalog. I. Early data release.
Schneider D.P., Richards G.T., Fan X., Hall P.B., Strauss M.A.,
Vanden Berk D.E., Gunn J.E., Newberg H.J., Reichard T.A., Stoughton C.,
Voges W., Yanny B., Anderson S.F., Annis J., Bahcall N.A., Bauer A.,
Bernardi M., Blanton M.R., Boroski W.N., Brinkmann J., Briggs J.W.,
Brunner R., Burles S., Carey L., Castander F.J., Connolly A.J., Csabai I.,
Doi M., Friedman S., Frieman J.A., Fukugita M., Heckman T.M.,
Hennessy G.S., Hindsley R.B., Hogg D.W., Ivezic Z., Kent S., Knapp G.R.,
Kunzst P.Z., Lamb D.Q., Leger R.F., Long D.C., Loveday J., Lupton R.H.,
Margon B., Meiksin A., Merelli A., Munn J.A., Newcomb M., Nichol R.C.,
Owen R., Pier J.R., Pope A., Rockosi C.M., Saxe D.H., Schlegel D.,
Siegmund W.A., Smee S., Snir Y., Subbarao M., Szalay A.S., Thakar A.R.,
Uomoto A., Waddell P., York D.G.
<Astron. J. 123, 567 (2002)>
=2002AJ....123..567S
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ADC_Keywords: QSOs ; Surveys ; Photometry, SDSS ; Redshifts
Keywords: catalogs - quasars: general - surveys
Abstract:
We present the first edition of the Sloan Digital Sky Survey (SDSS)
Quasar Catalog. The catalog consists of the 3814 objects (3000
discovered by the SDSS) in the initial SDSS public data release that
have at least one emission line with a full width at half-maximum
larger than 1000 km/s, luminosities brighter than M_I*_=-23, and
highly reliable redshifts. The area covered by the catalog is
494{deg}^2^ ; the majority of the objects were found in SDSS
commissioning data using a multicolor selection technique.
The quasar redshifts range from 0.15 to 5.03. For each object the
catalog presents positions accurate to better than 0.2" rms per
coordinate, five-band (ugriz) CCD-based photometry with typical
accuracy of 0.05 mag, radio and X-ray emission properties, and
information on the morphology and selection method. Calibrated spectra
of all objects in the catalog, covering the wavelength region
3800-9200{AA} at a spectral resolution of 1800-2100, are also
available. Since the quasars were selected during the commissioning
period, a time when the quasar selection algorithm was undergoing
frequent revisions, the sample is not homogeneous and is not intended
for statistical analysis.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 29 92 SDSS spectroscopic plate information
table3.dat 196 3814 The SDSS Quasar Catalog I
table5.dat 54 20 Discrepant redshifts
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See also:
http://www.sdss.org/ : The SDSS Home Page
VII/223 : 2dF QSO Redshift Survey. V. The 10k catalogue (Croom+ 2001)
J/AJ/107/1245 : QSOs Palomar Transit Grism Survey catalog (Schneider+ 1994)
J/AJ/109/1498 : Large Bright Quasar Survey VI (LBQS) (Hewett+, 1995)
J/AJ/119/2540 : Asiago-ESO/RASS QSO survey. I. (Grazian+, 2000)
J/ApJS/77/203 : QSO absorption systems (Junkkarinen+ 1991)
J/MNRAS/328/805 : The 2dF QSO Redshift Survey - VIII. (Outran+, 2001)
J/AJ/121/2308 : Sloan Digital Sky Survey quasar photometry (Richards+, 2001)
J/AJ/122/503 : QSO SDSS u*g*r*i*z* photometry and redshift (Anderson+, 2001)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Plate Plate number
6- 7 I2 h RAh Right ascension (J2000.0)
9- 10 I2 min RAm Right ascension (J2000.0)
12- 15 F4.1 s RAs Right ascension (J2000.0)
17 A1 --- DE- Declination sign (J2000.0)
18- 19 I2 deg DEd Declination (J2000.0)
21- 22 I2 arcmin DEm Declination (J2000.0)
24- 25 I2 arcsec DEs Declination (J2000.0)
27- 29 I3 --- N Number of quasars in the catalog contained on
this plate
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1 A1 --- f5 [*] Discrepant redshift (see table5)
2- 19 A18 --- SDSS Object name, hhmmss.ss+ddmmss.s (1)
22- 29 I8 10-7rad RArad Right Ascension (J2000) (in 10^-7^ radians)
32- 39 I8 10-7rad DErad Declination (J2000) (in 10^-7^ radians)
41- 45 F5.3 --- z Redshift
47 I1 --- r_SDSS Source of object (2)
49- 53 F5.2 mag u*mag The u* band magnitude (7)
55- 58 F4.2 mag e_u*mag The error in u*mag
60- 64 F5.2 mag g*mag The g* band magnitude (7)
66- 69 F4.2 mag e_g*mag The error in g*mag
71- 75 F5.2 mag r*mag The r* band magnitude (7)
77- 80 F4.2 mag e_r*mag The error in r*mag
82- 86 F5.2 mag i*mag The i* band magnitude (7)
88- 91 F4.2 mag e_i*mag The error in i*mag
93- 97 F5.2 mag z*mag The z* band magnitude (7)
99-102 F4.2 mag e_z*mag The error in z*mag
105-108 F4.2 mag uAbs Galactic absorption in u band
110-116 F7.2 mJy PFlux ?=0.00 FIRST peak flux density at 20cm (1.4GHz)
118-123 F6.3 [ct/s] logCR ?=0 Log of ROSAT full band count rate
125-130 F6.2 mag i*Mag Absolute i* band magnitude (3)
133 I1 --- Morph [0,1] Morphologically extended flag (4)
136 I1 --- TarSel [0] Target selection version (5)
139 I1 --- QFlag [0,1] Quasar target flag (6)
142 I1 --- FFlag [0,1] FIRST target flag (6)
145 I1 --- RFlag [0,1] ROSAT target flag (6)
148 I1 --- SFlag [0,1] Serendipity target flag (6)
151 I1 --- StFlag [0,1] Star target flag (6)
154 I1 --- GFlag [0,1] Galaxy target flag (6)
157-160 I4 --- SNum SDSS Imaging Run Number for photometric
measurements
162-166 I5 d ObsDate Modified Julian Date (MJD=JD-2400000.5)
of spectroscopic observation
169-171 I3 --- Plate Spectroscopic Plate Number
173-175 I3 --- Fiber Spectroscopic Fiber Number
177-196 A20 --- OName Object Name if not discovered by SDSS
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Note (1): The full name of an object is SDSS Jhhmmss.ss+ddmmss.s (J2000).
Note (2): Source of object
0 = Early Data Release (EDR) quasar;
1 = Extreme BAL Search;
2 = Visual search of Early Data Release (EDR_ spectra.
Note (3): Absolute i* band magnitude, assuming H_0_ = 50km/s/Mpc,
{Omega}_M_ = 1.00, {Omega}_L_ = 0.00, and {alpha}_Q_ = -0.50.
Note (4): Morphology flag:
0 = point source;
2 = extended.
Note (5): Target selection version (is always 0 in this version)
1 = 2.2a;
2 = 2.5;
3 = 2.7.
Note (6): Flags:
0 = not targetted;
2 = targetted.
Note (7): For the definition of the SDSS photometric system, see
Fukugita, et al., 1996AJ....111.1748F
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1 A1 --- --- [J] indicates J2000 equinox in SDSS name
2- 19 A18 --- SDSS SDSS quasar name
22- 25 F4.2 --- zSDSS SDSS redshift
28- 32 F5.2 --- Dz ? NED-SDSS redshift
35- 54 A20 --- Name NED Object Name
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History:
From electronic version of the journal
* 11-Mar-2002: Corrections made at CDS:
table3: flag "f5" added
table5: SDSS 130916.67-001550.2 converted into 130916.67-001550.1
to be consistent with table3.
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(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 08-Mar-2002