J/ApJS/166/470 SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)
Spectral energy distributions and multiwavelength selection of type 1 quasars.
Richards G.T., Lacy M., Storrie-Lombardi L.J., Hall P.B., Gallagher S.C.,
Hines D.C., Fan X., Papovich C., Vanden Berk D.E., Trammell G.B.,
Schneider D.P., Vestergaard M., York D.G., Jester S., Anderson S.F.,
Budavari T., Szalay A.S.
<Astrophys. J. Suppl. Ser., 166, 470-497 (2006)>
=2006ApJS..166..470R 2006ApJS..166..470R
ADC_Keywords: QSOs ; Photometry, infrared ; Surveys
Keywords: catalogs - galaxies: active - infrared: galaxies - quasars: general -
radio continuum: galaxies - surveys - ultraviolet: galaxies -
X-rays: galaxies
Abstract:
We present an analysis of the mid-infrared (MIR) and optical
properties of type 1 (broad-line) quasars detected by the Spitzer
Space Telescope. The MIR color-redshift relation is characterized to
z∼3, with predictions to z=7. We demonstrate how combining MIR and
optical colors can yield even more efficient selection of active
galactic nuclei (AGNs) than MIR or optical colors alone. Composite
spectral energy distributions (SEDs) are constructed for 259 quasars
with both Sloan Digital Sky Survey and Spitzer photometry,
supplemented by near-IR, GALEX, VLA, and ROSAT data, where available.
Description:
We investigate the mid-IR and optical properties of type 1 quasars
that are detected in both the SDSS and in all four bands of the
Spitzer Infrared Array Camera (IRAC). The Spitzer data are taken from
the XFLS and SWIRE ELAIS-N1, ELAIS-N2, and Lockman Hole areas, which
have (RA, DE) centers of (259.5°, 59.5°),
(242.75°, 55.0°), (249.2°, 41.029°), and
(161.25°, 58.0°), respectively.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 132 259 SDSS-Spitzer quasar Photometry I
table2.dat 144 259 SDSS-Spitzer quasar Photometry II
table3.dat 52 226 Mean quasar SEDs
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See also:
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- SDSS SDSS identification (HHMMSS.ss+DDMMSS.s) (G1)
20- 24 F5.3 --- z Redshift from emission lines
26- 30 F5.2 [10-7W] logBol Log of bolometric luminosity (2)
32- 36 F5.2 [10-7W] logOpt Log of 1-0.1 micron integrated luminosity (3)
38- 42 F5.2 [10-7W] logIR Log of 100-1 micron integrated luminosity (3)
44- 48 F5.2 --- BC Bolometric correction (4)
50- 55 F6.3 [ct/s] CRX ? Log of the ROSAT count rate
57- 61 F5.2 mag FUVmag ? GALEX FUV band AB magnitude
63- 66 F4.2 mag e_FUVmag ? Error in FUVmag
68- 72 F5.2 mag NUVmag ? GALEX NUV band AB magnitude
74- 77 F4.2 mag e_NUVmag ? Error in NUVmag
79- 83 F5.2 mag umag SDSS u band AB magnitude
85- 88 F4.2 mag e_umag Error in umag
90- 94 F5.2 mag gmag SDSS g band AB magnitude
96- 99 F4.2 mag e_gmag Error in gmag
101-105 F5.2 mag rmag SDSS r band AB magnitude
107-110 F4.2 mag e_rmag Error in rmag
112-116 F5.2 mag imag SDSS i band AB magnitude
118-121 F4.2 mag e_imag Error in imag
123-127 F5.2 mag zmag SDSS z band AB magnitude
129-132 F4.2 mag e_zmag Error in zmag
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Note (2): From 100 microns to 10keV. In units of erg/s.
Note (3): In units of erg/s.
Note (4): From rest-frame 5100Å to the (100 micron to 10keV)
bolometric luminosity.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- SDSS SDSS identification (HHMMSS.ss+DDMMSS.s) (G1)
20- 24 F5.2 mag Jmag ? The J band Vega magnitude
26- 29 F4.2 mag e_Jmag ? Error in Jmag
31- 35 F5.2 mag Hmag ? The H band Vega magnitude
37- 40 F4.2 mag e_Hmag ? Error in Hmag
42- 46 F5.2 mag Kmag ? The K band Vega magnitude
48- 51 F4.2 mag e_Kmag ? Error in Kmag
53- 58 F6.1 uJy S3.6um Spitzer/IRAC 3.6 micron flux density
60- 64 F5.1 uJy e_S3.6um Error in S3.6um
66- 71 F6.1 uJy S4.5um Spitzer/IRAC 4.5 micron flux density
73- 77 F5.1 uJy e_S4.5um Error in S4.5um
79- 84 F6.1 uJy S5.8um Spitzer/IRAC 5.8 micron flux density
86- 90 F5.1 uJy e_S5.8um Error in S5.8um
92- 98 F7.1 uJy S8.0um Spitzer/IRAC 8.0 micron flux density
100-104 F5.1 uJy e_S8.0um Error in S8.0um
106-109 F4.2 mJy S15um ? ISO 15 micron flux density
111-115 F5.2 mJy S24um ? Spitzer/MIPS 25 micron flux density
117-120 F4.2 mJy e_S24um ? Error in S24um
122-125 F4.1 mJy S70um ? Spitzer/MIPS 70 micron flux density
127-129 F3.1 mJy e_S70um ? Error in S70um
131-136 F6.2 mJy S20cm ? VLA 20cm flux density
138 A1 --- l_logLRad Limit flag on LRad
140-144 F5.2 [10-7W/Hz] logLRad Log of the VLA 20cm luminosity
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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- 5 F5.2 [Hz] LogFreq Log of the frequency
7- 11 F5.2 [10-7W] LogLall Log mean luminosity of all quasars (1)
13- 16 F4.2 [10-7W] e_LogLall The 1σ deviation in LogLall
18- 22 F5.2 [10-7W] LogBlue Log luminosity of a bluer than
average quasar (1)
24- 28 F5.2 [10-7W] LogRed Log luminosity of a redder than
average quasar (1)
30- 34 F5.2 [10-7W] LogOptLum Log luminosity of an optically
luminous (-24.2≤Mi≤-23.3) quasar (1)
36- 40 F5.2 [10-7W] LogOptDim Log luminosity of an optically
dim (-23.3≤Mi≤-22.0) quasar (1)
42- 46 F5.2 [10-7W] LogIRLum Log luminosity of an IR
luminous (-24.2≤Mi≤-23.3) quasar (1)
48- 52 F5.2 [10-7W] LogIRDim Log luminosity of an IR dim
(-23.3≤Mi≤-22.0) quasar (1)
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Note (1): All of the SEDs are taken to have αx=-1.0 beyond 1017Hz
and thus have constant luminosity beyond this value. In units of erg/s.
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Global notes
Note (G1): SDSS JHHMMSS.ss+DDMMSS.s in Simbad.
Only the observed Galactic-extinction corrected photometry of
these sources; no host galaxy contamination has been removed.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 16-May-2008