J/AJ/131/2766 Quasar luminosity function from SDSS-DR3 (Richards+, 2006)
The Sloan Digital Sky Survey quasar survey: quasar luminosity function from
Data Release 3.
Richards G.T., Strauss M.A., Fan X., Hall P.B., Jester S., Schneider D.P.,
Vanden Berk D.E., Stoughton C., Anderson S.F., Brunner R.J., Gray J.,
Gunn J.E., Ivezic Z., Kirkland M.K., Knapp G.R., Loveday J., Meiksin A.,
Pope A., Szalay A.S., Thakar A.R., Yanny B., York D.G., Barentine J.C.,
Brewington H.J., Brinkmann J., Fukugita M., Harvanek M., Kent S.M.,
Kleinman S.J., Krzesinski J., Long D.C., Lupton R.H., Nash T.,
Neilsen E.H.JR, Nitta A., Schlegel D.J., Snedden S.A.
<Astron. J., 131, 2766-2787 (2006)>
=2006AJ....131.2766R 2006AJ....131.2766R
ADC_Keywords: QSOs ; Surveys ; Photometry, SDSS ; Redshifts
Keywords: cosmology: observations - galaxies: active -
galaxies: luminosity function, mass function - quasars: general -
surveys
Abstract:
We determine the number counts and z=0-5 luminosity function for a
well-defined, homogeneous sample of quasars from the Sloan Digital Sky
Survey (SDSS). We conservatively define the most uniform statistical
sample possible, consisting of 15343 quasars within an effective area
of 1622°2 that was derived from a parent sample of 46420
spectroscopically confirmed broad-line quasars in the 5282°2 of
imaging data from SDSS Data Release 3. The sample extends from i=15 to
19.1 at z≲3 and to i=20.2 for z≳3.
Description:
The SDSS uses a dedicated wide-field 2.5m telescope at Apache Point
Observatory, New Mexico, with a 140megapixel imaging camera and a pair
of fiber-fed multiobject double spectrographs. The imaging is carried
out in five broad bands (ugriz).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 30 6413 Quasar selection function
table4.dat 11 550 K-corrections
table5.dat 54 15343 Statistical quasar sample
table6.dat 42 101 Binned quasar luminosity function
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See also:
VII/243 : SDSS quasar catalog. III. (Schneider+, 2005)
VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)
J/AJ/131/2788 : Quasar sample for the SFQS survey (Jiang+, 2006)
http://www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 F4.1 mag imag The i band magnitude
6- 9 F4.2 --- z Redshift
11- 16 F6.3 --- point [0,1]?=-1 Non-radio point source selection function
18- 23 F6.3 --- radio [0,1]?=-1 Radio-detected point source selection
function
25- 30 F6.3 --- extend [0,1]?=-1 Extended source selection function
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 F4.2 --- z Redshift
6- 11 F6.3 --- KCorr The i band K correction (1)
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Note (1): Including both the emission line and continuum
(αν=-0.5, normalized at z=2) components.
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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- 4 A4 --- --- [SDSS]
6- 24 A19 --- SDSSJ The SDSS name
(SDSS JHHMMSS.ss+DDMMSS.s in Simbad)
26- 30 F5.3 --- z Redshift
32- 36 F5.2 mag imag Dereddened i band magnitude
38- 43 F6.2 mag iMAG Absolute i band magnitude at z=2
45- 49 F5.2 mag D(g-i) Relative (g-i) color index
51- 54 F4.2 --- Cor [0,1] Selection function value
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 4 F4.2 --- z Redshift bin
6- 11 F6.2 mag iMAG Absolute i band magnitude at z=2
13- 17 F5.2 [Mpc-3.mag-1] logPhi Log of the space density
19- 25 F7.2 10-9Mpc-3.mag-1 errPhi Error in the space density
27 I1 --- Fill [0/1] Indicator of whether the bin is
completely covered by data (1=yes, 0=no)
29- 32 F4.2 --- Mean redshift of quasars in the bin
34- 36 I3 --- NQ Number of quasars in the bin
38- 42 F5.1 --- NQcor Corrected number of quasars in bin (1)
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Note (1): After applying the selection function.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 14-May-2008