J/ApJ/768/13 FIR properties of SDSS type 1 quasars (Hanish+, 2013)
Far-infrared properties of type 1 quasars.
Hanish D.J., Teplitz H.I., Capak P., Desai V., Armus L., Brinkworth C.,
Brooke T., Colbert J., Frayer D., Huynh M., Lacy M., Murphy E.,
Noriega-Crespo A., Paladini R., Scarlata C., Shenoy S.
<Astrophys. J., 768, 13 (2013)>
=2013ApJ...768...13H 2013ApJ...768...13H
ADC_Keywords: QSOs ; Photometry, infrared ; Photometry, SDSS
Keywords: galaxies: active; infrared: galaxies; quasars: general; surveys
Abstract:
We use the Spitzer Space Telescope Enhanced Imaging Products and the
Spitzer Archival Far-InfraRed Extragalactic Survey to study the
spectral energy distributions (SEDs) of spectroscopically confirmed
type 1 quasars selected from the Sloan Digital Sky Survey (SDSS). By
combining the Spitzer and SDSS data with the Two Micron All Sky
Survey, we are able to construct a statistically robust rest-frame
0.1-100µm type 1 quasar template. We find that the quasar
population is well-described by a single power-law SED at wavelengths
less than 20µm, in good agreement with previous work. However, at
longer wavelengths, we find a significant excess in infrared
luminosity above an extrapolated power-law, along with significant
object-to-object dispersion in the SED. The mean excess reaches a
maximum of 0.8dex at rest-frame wavelengths near 100µm.
Description:
To probe the 3-100um range, we use the Spitzer Enhanced Imaging
Products (SEIP; P. Capak et al., in preparation) and the Spitzer
Archival FIR Extragalactic Survey (SAFIRES; D. J. Hanish et al., in
preparation), which provide science quality mosaics and photometry for
most cryogenic Infrared Array Camera (IRAC) and MIPS data in the
Spitzer Heritage Archive. The Sloan Digital Sky Survey (SDSS;
Abazajian et al. 2009, II/294) Data Release 7 provides a robust SED
within the observed 0.3-1um range, and the Two Micron All Sky Survey
(2MASS; Skrutskie et al. 2006, VII/233) is used to fill in the 1-3um
wavelength range.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 384 301 Spitzer Archival FIR Extragalactic Survey
(SAFIRES) photometry
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See also:
VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/MNRAS/434/3104 : QSOs SED shapes from optical to NIR (Hao+, 2013)
J/ApJS/206/4 : SED & bolometric corrections for QSOs (Krawczyk+, 2013)
J/ApJ/757/51 : FIRST-2MASS dust-reddened QSO spectra (Glikman+, 2012)
J/ApJ/757/13 : IR SEDs of 24um z∼0.3-3 galaxies (Sajina+, 2012)
J/ApJ/716/530 : Mid-IR variability from the SDWFS (Kozlowski+, 2010)
J/AJ/139/390 : SDSS-DR7 optically selected BL Lac objects (Plotkin+, 2010)
J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)
J/MNRAS/386/1252 : SWIRE/SDSS quasars (Hatziminaoglou+, 2008)
J/ApJ/666/806 : SED of Spitzer quasars (QUEST) (Netzer+, 2007)
J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007)
J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)
J/ApJS/95/1 : Atlas of Quasar Energy Distributions (Elvis+ 1994)
http://irsa.ipac.caltech.edu/data/SPITZER/Enhanced/SEIP : Spitzer Enhanced
Imaging Products home page
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [SDSS]
6- 24 A19 --- SDSS SDSS Quasar catalog identifier
(JHHMMSS.ss+DDMMSS.s)
26- 32 F7.3 deg RAdeg Right Ascension in decimal degrees (J2000)
34- 39 F6.3 deg DEdeg Declination in decimal degrees (J2000)
41- 46 F6.4 --- z [0.1/5.3] SDSS spectroscopic redshift
48- 59 A12 --- RID Region identifier from Spitzer Enhanced Imaging
Products (SEIP) (60066201 or 60066351 -NNN) (1)
61- 66 F6.3 mag umag [16.4/26.2] SDSS u' band AB magnitude
68- 72 F5.3 mag e_umag [0.01/1.9] Uncertainty in umag
74- 79 F6.3 mag gmag SDSS g' band AB magnitude
81- 85 F5.3 mag e_gmag Uncertainty in gmag
87- 92 F6.3 mag rmag SDSS r' band AB magnitude
94- 98 F5.3 mag e_rmag Uncertainty in rmag
100-105 F6.3 mag imag SDSS i' band AB magnitude
107-111 F5.3 mag e_imag Uncertainty in imag
113-118 F6.3 mag zmag [15.9/20.5] SDSS z' band AB magnitude
120-124 F5.3 mag e_zmag [0.01/0.2] Uncertainty in zmag
126-131 F6.3 mag Jmag [15.7/18.4]? 2MASS J band AB magnitude
133-137 F5.3 mag e_Jmag [0/0.3]? Uncertainty in Jmag
139-144 F6.3 mag Hmag ? 2MASS H band AB magnitude
146-150 F5.3 mag e_Hmag ? Uncertainty in Hmag
152-157 F6.3 mag Ksmag [15.3/18.2]? 2MASS Ks band AB magnitude
159-163 F5.3 mag e_Ksmag [0/0.4]? Uncertainty in Kmag
165-170 F6.3 mag [3.6] [15.3/24.7]? Spitzer/IRAC 3.6um AB magnitude
172-176 F5.3 mag e_[3.6] [0.001/0.3]? Uncertainty in [3.6]
178-183 F6.3 mag [4.5] ? Spitzer/IRAC 4.5 micron band AB magnitude
185-189 F5.3 mag e_[4.5] ? Uncertainty in [4.5]
191-196 F6.3 mag [5.8] ? Spitzer/IRAC 5.8 micron band AB magnitude
198-202 F5.3 mag e_[5.8] ? Uncertainty in [5.8]
204-209 F6.3 mag [8.0] [14.4/22.7]? Spitzer/IRAC 8um band AB magnitude
211-215 F5.3 mag e_[8.0] [0.001/0.4]? Uncertainty in [3.6]
217-222 F6.3 mag [24] [12.9/19.2]? Spitzer/MIPS 24um band AB magnitude
224-228 F5.3 mag e_[24] [0.001/0.4]? Uncertainty in [24]
230-235 F6.3 mag [70] ? Spitzer/MIPS 70 micron band AB magnitude
237-241 F5.3 mag e_[70] ? Uncertainty in [70]
243-248 F6.3 mag [160] [11.1/15.2]? Spitzer/MIPS 160um AB magnitude
250-254 F5.3 mag e_[160] [0.007/0.3]? Uncertainty in [160]
256-264 A9 --- n_Jmag Detection status for Jmag (2)
269-277 A9 --- n_Hmag Detection status for Hmag (2)
282-290 A9 --- n_Ksmag Detection status for Ksmag (2)
295-306 A12 --- n_[3.6] Detection status for [3.6] (2)
308-319 A12 --- n_[4.5] Detection status for [4.5] (2)
321-332 A12 --- n_[5.8] Detection status for [5.8] (2)
334-345 A12 --- n_[8.0] Detection status for [8.0] (2)
347-358 A12 --- n_[24] Detection status for [24] (2)
360-371 A12 --- n_[70] Detection status for [70] (2)
373-384 A12 --- n_[160] Detection status for [160] (2)
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Note (1): See Capak et al. (in prep) and
http://irsa.ipac.caltech.edu/data/SPITZER/Enhanced/SEIP
Note (2): Direct, Indirect, Nondetection, or Rejection. For nondetections
possessing adequate coverage, the quoted magnitudes are the 3σ
flux density limits at the appropriate location.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 21-Nov-2014