J/MNRAS/434/3104 QSOs SED shapes from optical to NIR (Hao+, 2013)
A quasar-galaxy mixing diagram: quasar spectral energy distribution shapes in
the optical to near-infrared.
Hao H., Elvis M., Bongiorno A., Zamorani G., Merloni A., Kelly B.C.,
Civano F., Celotti A., Ho L.C., Jahnke K., Comastri A., Trump J.R.,
Mainieri V., Salvato M., Brusa M., Impey C.D., Koekemoer A.M., Lanzuisi G.,
Vignali C., Silverman J.D., Urry C.M., Schawinski K.
<Mon. Not. R. Astron. Soc., 434, 3104-3121 (2013)>
=2013MNRAS.434.3104H 2013MNRAS.434.3104H
ADC_Keywords: Surveys ; QSOs ; Energy distributions
Keywords: surveys - galaxies: evolution - quasars: general
Abstract:
We define a quasar-galaxy mixing diagram using the slopes of their
spectral energy distributions (SEDs) from 1µm to 3000Å and from
1 to 3µm in the rest frame. The mixing diagram can easily
distinguish among quasar-dominated, galaxy-dominated and
reddening-dominated SED shapes. By studying the position of the 413
XMM-selected type 1 AGN in the wide-field 'Cosmic Evolution Survey' in
the mixing diagram, we find that a combination of the Elvis et al.
(2012ApJ...759....6E 2012ApJ...759....6E, Cat. J/ApJ/759/6) mean quasar SED with various
contributions from galaxy emission and some dust reddening is
remarkably effective in describing the SED shape from 0.3 to 3µm
for large ranges of redshift, luminosity, black hole mass and
Eddington ratio of type 1 AGN. In particular, the location in the
mixing diagram of the highest luminosity AGN is very close (within
1σ) to that of the Elvis et al. (2012ApJ...759....6E 2012ApJ...759....6E, Cat.
J/ApJ/759/6) SED template. The mixing diagram can also be used to
estimate the host galaxy fraction and reddening in quasar. We also
show examples of some outliers which might be AGN in different
evolutionary stages compared to the majority of AGN in the quasar-host
galaxy co-evolution cycle.
Description:
In this paper, we use the mixing diagram to study the SED shape in the
OPT to NIR decade (3µm to 3000Å) for three type 1 AGN samples:
the large XMM Cosmic Evolution Survey (XMM-COSMOS) type 1 AGN sample
(Elvis et al. 2012ApJ...759....6E 2012ApJ...759....6E, Cat. J/ApJ/759/6, Paper I), the
Spitzer-SDSS quasar sample (R06, Richards et al., 2006ApJS..166..470R 2006ApJS..166..470R,
Cat. J/ApJS/166/470) and the bright quasar sample (E94, Elvis et al.,
1994ApJS...95....1E 1994ApJS...95....1E, Cat. J/ApJS/95/1).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 232 11 Spectral slopes for different fg values (mixing
curve) assuming mean SED as the pure quasar SED
from Elvis et al. 1994ApJS...95....1E 1994ApJS...95....1E (E94)
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See also:
J/ApJS/95/1 : (E94) Atlas of Quasar Energy Distributions (Elvis+ 1994)
J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)
J/ApJ/759/6 : SEDs of type I AGN in COSMOS. I. XMM-COSMOS (Elvis+, 2012)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 F8.6 --- fg [0/1] Host galaxy contribution to the
quasar at 1µm
10- 15 F6.3 --- ao.S0 αopt for the S0 mixing curve (1)
17- 22 F6.3 --- ai.S0 αNIR for the S0 mixing curve (1)
24- 29 F6.3 --- ao.Sa αopt for the Sa mixing curve (1)
31- 36 F6.3 --- ai.Sa αNIR for the Sa mixing curve (1)
38- 43 F6.3 --- ao.Sb αopt for the Sb mixing curve (1)
45- 50 F6.3 --- ai.Sb αNIR for the Sb mixing curve (1)
52- 57 F6.3 --- ao.Sc αopt for the Sc mixing curve (1)
59- 64 F6.3 --- ai.Sc αNIR for the Sc mixing curve (1)
66- 71 F6.3 --- ao.Sd αopt for the Sd mixing curve (1)
73- 78 F6.3 --- ai.Sd αNIR for the Sd mixing curve (1)
80- 85 F6.3 --- ao.Sdm αopt for the Sdm mixing curve (1)
87- 92 F6.3 --- ai.Sdm αNIR for the Sdm mixing curve (1)
94- 99 F6.3 --- ao.Spi4 αopt for the Spi4 mixing curve (1)
101-106 F6.3 --- ai.Spi4 αNIR for the Spi4 mixing curve (1)
108-113 F6.3 --- ao.Ell2 αopt for the Ell2 mixing curve (1)
115-120 F6.3 --- ai.Ell2 αNIR for the Ell2 mixing curve (1)
122-127 F6.3 --- ao.Ell5 αopt for the Ell5 mixing curve (1)
129-134 F6.3 --- ai.Ell5 αNIR for the Ell5 mixing curve (1)
136-141 F6.3 --- ao.Ell13 αopt for the Ell13 mixing curve (1)
143-148 F6.3 --- ai.Ell13 αNIR for the Ell13 mixing curve (1)
150-155 F6.3 --- ao.N6090 αopt for the N6090 mixing curve (1)
157-162 F6.3 --- ai.N6090 αNIR for the N6090 mixing curve (1)
164-169 F6.3 --- ao.M82 αopt for the M82 mixing curve (1)
171-176 F6.3 --- ai.M82 αNIR for the M82 mixing curve (1)
178-183 F6.3 --- ao.Arp220 αopt for the Arp220 mixing curve (1)
185-190 F6.3 --- ai.Arp220 αNIR for the Arp220 mixing curve (1)
192-197 F6.3 --- ao.I20551 αopt for the I20551 mixing curve (1)
199-204 F6.3 --- ai.I20551 αNIR for the I20551 mixing curve (1)
206-211 F6.3 --- ao.I22491 αopt for the I22491 mixing curve (1)
213-218 F6.3 --- ai.I22491 αNIR for the I22491 mixing curve (1)
220-225 F6.3 --- ao.N6240 αopt for the N6240 mixing curve (1)
227-232 F6.3 --- ai.N6240 αNIR for the N6240 mixing curve (1)
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Note (1): The 16 galaxy templates in the “SWIRE Template Library”
(Polletta et al. 2007ApJ...663...81P 2007ApJ...663...81P) include:
* 3 elliptical galaxy templates “Ell2”, “Ell5”, “Ell13” representing
elliptical galaxy of age 2 Gyr, 5 Gyr and 13 Gyr respectively
* 7 spiral galaxy templates “S0”, “Sa”, “Sb”, “Sc”, “Sd”, “Sdm”, “Spi4”
* 6 starburst galaxy templates “NGC6090”, “M82”, “Arp220”,
“IRAS20551-4250”, “IRAS22491-1808”, “NGC6240”.
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History:
From electronic version of the journal
References:
Elvis et al., Paper I 2012ApJ...759....6E 2012ApJ...759....6E, Cat. J/ApJ/759/6
Hao et al., Paper III 2014MNRAS.438.1288H 2014MNRAS.438.1288H
(End) Patricia Vannier [CDS] 15-Sep-2014