J/ApJS/206/4 SED and bolometric corrections for luminous QSOs (Krawczyk+, 2013)
Mean spectral energy distributions and bolometric corrections for luminous
quasars.
Krawczyk C.M., Richards G.T., Mehta S.S., Vogeley M.S., Gallagher S.C.,
Leighly K.M., Ross N.P., Schneider D.P.
<Astrophys. J. Suppl. Ser., 206, 4 (2013)>
=2013ApJS..206....4K 2013ApJS..206....4K
ADC_Keywords: QSOs ; Photometry, SDSS ; Photometry, infrared ; X-ray sources ;
Ultraviolet
Keywords: catalogs - infrared: galaxies - methods: statistical -
quasars: general
Abstract:
We explore the mid-infrared (mid-IR) through ultraviolet (UV) spectral
energy distributions (SEDs) of 119652 luminous broad-lined quasars
with 0.064<z<5.46 using mid-IR data from Spitzer and WISE,
near-infrared data from the Two Micron All Sky Survey and UKIDSS,
optical data from the Sloan Digital Sky Survey, and UV data from the
Galaxy Evolution Explorer. The mean SED requires a bolometric
correction (relative to 2500Å) of BC2500Å=2.75±0.40 using
the integrated light from 1um-2keV, and we further explore the range
of bolometric corrections exhibited by individual objects. In
addition, we investigate the dependence of the mean SED on various
parameters, particularly the UV luminosity for quasars with 0.5≲z≲3
and the properties of the UV emission lines for quasars with z≳1.6;
the latter is a possible indicator of the strength of the accretion
disk wind, which is expected to be SED-dependent.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 458 119652 Quasar catalog
table2.dat 113 272 Mean quasar SEDs
table3.dat 99 119652 Bolometric luminosities and bolometric corrections
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See also:
VII/269 : SDSS Quasar Catalog, DR9Q (Paris+, 2012)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
II/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)
VII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010)
II/281 : 2MASS 6X Point Source Working Database / Catalog (Cutri+ 2006)
VII/241 : The 2dF QSO Redshift Survey (2QZ) (Croom+ 2004)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/A+A/537/A99 : Large Quasar Astrometric Catalog 2 (LQAC-2) (Souchay+, 2012)
J/ApJS/201/10 : SDSS quasar catalog with Swift observations (Wu+, 2012)
J/AJ/142/78 : New 2.2<z<3 quasars from SDSS and UKIDSS (Wu+, 2011)
J/AJ/141/105 : NIR-matched quasar catalog (Peth+, 2011)
J/MNRAS/406/1583 : Quasar from SDSS and UKIDSS (Wu+, 2010)
J/ApJ/716/530 : Mid-IR variability from the SDWFS (Kozlowski+, 2010)
J/MNRAS/392/19 : The 2dF-SDSS QSO survey (2SLAQ) (Croom+, 2009)
J/ApJS/180/67 : Phot. selection of quasars from SDSS. II. (Richards+, 2009)
J/MNRAS/396/223 : QSO candidates selection in VO era (D'Abrusco+, 2009)
J/ApJ/675/49 : High-redshift QSOs in the SWIRE survey (Siana+, 2008)
J/MNRAS/383/1513 : 2MASS, SDSS and FIRST fluxes of QSOs (Labita+, 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/AJ/133/313 : AGN from RASS and SDSS DR5 (Anderson+, 2007)
J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)
J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)
J/AJ/129/1198 : SDSS quasars in SWIRE ELAIS N1 field (Hatziminaoglou+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Previously published name (1)
20- 29 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
31- 40 F10.6 deg DEdeg Declination in decimal degrees (J2000)
42- 46 F5.3 --- z Redshift from SDSS
48- 53 F6.3 mag umag BEST SDSS u band PSF magnitude
55- 59 F5.3 mag e_umag Error in umag
61- 66 F6.3 mag gmag BEST SDSS g band PSF magnitude
68- 72 F5.3 mag e_gmag Error in gmag
74- 79 F6.3 mag rmag BEST SDSS r band PSF magnitude
81- 85 F5.3 mag e_rmag Error in rmag
87- 92 F6.3 mag imag BEST SDSS i band PSF magnitude
94- 98 F5.3 mag e_imag Error in imag
100-105 F6.3 mag zmag BEST SDSS z band PSF magnitude
107-112 F6.3 mag e_zmag Error in zmag
114-119 F6.3 mag d(g-i) The Δ(g-i) color offset
121-139 I19 --- objID SDSS BEST object ID from SDSS, Stripe 82 or from
Schneider (Cat. VII/260), 2010; 64-bit integer
141-144 I4 --- Plate ?=0 SDSS spectroscopic plate number
146-150 I5 d MJD ?=0 Modified Julian Date of spectroscopic
observation
152-155 I4 --- Fiber ?=0 SDSS spectroscopic fiber number
157-170 A14 --- Src Source of the SDSS data (2)
172-177 F6.3 mag Jmag ? 2MASS J band AB magnitude
179-183 F5.3 mag e_Jmag ? Error in Jmag
185-190 F6.3 mag Hmag ? 2MASS H band AB magnitude
192-196 F5.3 mag e_Hmag ? Error in Hmag
198-203 F6.3 mag Kmag ? 2MASS Ks band AB magnitude
205-209 F5.3 mag e_Kmag ? Error in Kmag
211-212 I2 --- 2M [-1/26]? Flag indicating source of 2MASS data (3)
214-219 F6.3 mag FUV ? Extinction corrected GALEX FUV (1516Å)
band magnitude
221-225 F5.3 mag e_FUV ? Error in FUV
227-232 F6.3 mag NUV ? Extinction corrected GALEX NUV (2267Å)
band magnitude
234-238 F5.3 mag e_NUV ? Error in NUV
240 I1 --- G [0/2]? Flag indicating the origin of UV data (4)
242-247 F6.3 mag [3.6] ? Spitzer/IRAC 3.6µm band AB magnitude
249-257 E9.3 mag e_[3.6] ? Error in [3.6]
259-264 F6.3 mag [4.5] ? Spitzer/IRAC 4.5µm band AB magnitude
266-274 E9.3 mag e_[4.5] ? Error in [4.5]
276-281 F6.3 mag [5.8] ? Spitzer/IRAC 5.8µm band AB magnitude
283-291 E9.3 mag e_[5.8] ? Error in [5.8]
293-298 F6.3 mag [8.0] ? Spitzer/IRAC 8.0µm band AB magnitude
300-308 E9.3 mag e_[8.0] ? Error in [8.0]
310-322 A13 --- Sp Flag indicating source of Spitzer data (5)
324-329 F6.3 mag Yumag ? UKIDSS Y band AB magnitude
331-339 E9.3 mag e_Yumag ? Error in Yumag
341-346 F6.3 mag Jumag ? UKIDSS J band AB magnitude
348-356 E9.3 mag e_Jumag ? Error in Jumag
358-363 F6.3 mag Humag ? UKIDSS H band AB magnitude
365-373 E9.3 mag e_Humag ? Error in Humag
375-380 F6.3 mag Kumag ? UKIDSS K band AB magnitude
382-390 E9.3 mag e_Kumag ? Error in Kumag
392-397 F6.3 mag [3.4] ? WISE 3.4µm band AB magnitude
399-407 E9.3 mag e_[3.4] ? Error in [3.4]
409-414 F6.3 mag [4.6] ? WISE 4.6µm band AB magnitude
416-424 E9.3 mag e_[4.6] ? Error in [4.6]
426-431 F6.3 mag [12] ? WISE 12µm band AB magnitude
433-441 E9.3 mag e_[12] ? Error in [12]
443-448 F6.3 mag [22] ? WISE 22µm band AB magnitude
450-458 E9.3 mag e_[22] ? Error in [22]
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Note (1): Formats differ according to column "Source" (see Note (2)):
<JHHMMSS.s+DDMMSS> for 2QZ, <JHHMMSS.ss+DDMMS> for 2SLAQ,
<HJHHMMSS.ss+DDMM> for AUS or <HHMMSS.ss+DDMMSS.s> for SDSS.
Note (2): Source as follows:
2QZ = the Two Degree Field QSO Redshift survey (2QZ; bJ<20.85 for z<3;
Croom et al. 2004, Cat. VII/241)
2SLAQ = the Two Degree Field-SDSS LRG and QSO survey (2SLAQ; g<21.85 for
z<3; Croom et al. 2009, Cat. J/MNRAS/392/19)
AUS = the AAT-UKIDSS-SDSS survey (AUS; i<21.6 for 0<z<5; S. Croom et al.,
in preparation)
SDSSDR7 = the SDSS-DR7 quasar catalog by Schneider et al. (2010, Cat. VII/260;
superseded by Cat. VII/269; i<19.1 for z<3 and i<20.2 for z>3)
Note (3): 2MASS=9*JFLAG+3*HFLAG+K_FLAG Where the individual filter flags are:
-1 = Bad extraction (for all filters, see section 2.1 for details);
0 = No detection;
1 = Catalog match;
2 = Extraction of low luminosity QSOs from 2MASS.
Note (4): Flag as follows:
0 = Not observed by GALEX;
1 = Extraction of low luminosity QSOs from GALEX;
2 = Catalog match.
Note (5): the sources of Spitzer observations are:
0 = Not observed by Spitzer;
XFLS = Extragalactic First Look Survey (Lacy et al. 2005ApJS..161...41L 2005ApJS..161...41L);
SDWFS = Spitzer Deep-Wide Field Survey (Ashby et al. 2009,
Cat. J/ApJ/701/428; see Cat. J/ApJ/716/530);
SWIRE DR2 = Lonsdale et al. 2003PASP..115..897L 2003PASP..115..897L, including the ELAIS-N1, -N2,
and Lockman Hole fields;
S-COSMOS = Sanders et al. 2007ApJS..172...86S 2007ApJS..172...86S;
S82HIZ = our own extraction of high redshift QSOs in stripe 82.
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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- 5 F5.2 [Hz] lognu [13/18.42] log of the frequency ν (1)
7- 12 F6.3 [10-7W] All ? log luminosity for all quasars (erg/s)
14- 17 F4.2 [10-7W] e_All ? The 1σ uncertainty in All (erg/s)
19- 24 F6.3 [10-7W] LLum ? log luminosity for low luminosity QSO (erg/s)
26- 29 F4.2 [10-7W] e_LLum ? The 1σ uncertainty in LLum (erg/s)
31- 36 F6.3 [10-7W] MLum ? log luminosity for mid luminosity QSO (erg/s)
38- 41 F4.2 [10-7W] e_MLum ? The 1σ uncertainty in MLum (erg/s)
43- 48 F6.3 [10-7W] HLum ? log luminosity for high luminosity QSO (erg/s)
50- 53 F4.2 [10-7W] e_HLum ? The 1σ uncertainty in HLum (erg/s)
55- 60 F6.3 [10-7W] CIVz1 ? log luminosity for CIV line in Zone 1
(disk dominated) quasars (erg/s)
62- 65 F4.2 [10-7W] e_CIVz1 ? The 1σ uncertainty in CIVZ1 (erg/s)
67- 72 F6.3 [10-7W] CIVz2 ? log luminosity for CIV line in Zone 2
(wind dominated) quasars (erg/s)
74- 77 F4.2 [10-7W] e_CIVz2 ? The 1σ uncertainty in CIVZ2 (erg/s)
79- 84 F6.3 [10-7W] UVbump ? log luminosity for UV Bump quasars (erg/s)
86- 89 F4.2 [10-7W] e_UVbump ? The 1σ uncertainty in UVBump (erg/s)
91- 96 F6.3 [10-7W] ScoUV ? log luminosity for Scott UV quasars (erg/s)
98-101 F4.2 [10-7W] e_ScoUV ? The 1σ uncertainty in ScottUV (erg/s)
103-108 F6.3 [10-7W] CaUV log luminosity for Casebeer UV quasars (erg/s)
110-113 F4.2 [10-7W] e_CaUV The 1σ uncertainty in CaseUV (erg/s)
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Note (1): All of the SEDs are taken to have αx=-1 above 0.2keV.
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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- 19 I19 --- objID SDSS identifier
21- 25 F5.2 [10-7W] logL250 Luminosity log(νLν) at 2500Å; erg/s
27- 30 F4.2 [10-7W] e_logL250 The 1σ uncertainty in logL250; erg/s
32- 36 F5.2 [10-7W] logL510 Luminosity log(νLν) at 5100Å; erg/s
38- 41 F4.2 [10-7W] e_logL510 The 1σ uncertainty in logL250; erg/s
43- 48 F6.2 --- BC [1/720] Disk bolometric correction:
L(1µm-2keV)/(νLν) at 2500Å
50- 55 F6.2 --- e_BC The 1σ uncertainty in BC
57- 61 F5.2 [10-7W] logIR log 1-30µm luminosity; erg/s
63- 66 F4.2 [10-7W] e_logIR The 1σ uncertainty in logIR
68- 72 F5.2 [10-7W] logOX log 1µm-2keV luminosity; erg/s
74- 77 F4.2 [10-7W] e_logOX The 1σ uncertainty in logOX
79- 83 F5.2 [10-7W] logSX log 2-10keV luminosity; erg/s
85- 88 F4.2 [10-7W] e_logSX The 1σ uncertainty in logSX
90- 94 F5.2 [10-7W] logHX ? log 10-500keV luminosity; erg/s
96- 99 F4.2 [10-7W] e_logHX ? The 1σ uncertainty in logHX
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 12-Jun-2013