J/MNRAS/438/1288 SEDs of type I AGN in XMM-COSMOS. II. (Hao+, 2014)
Spectral energy distributions of type 1 AGN in XMM-COSMOS.
II. Shape evolution.
Hao H., Elvis M., Civano F., Zamorani G., Ho L.C., Comastri A., Brusa M.,
Bongiorno A., Merloni A., Trump J.R., Salvato M., Impey C.D.,
Koekemoer A.M., Lanzuisi G., Celotti A., Jahnke K., Vignali C.,
Silverman J.D., Urry C.M., Schawinski K., Capak P.
<Mon. Not. R. Astron. Soc., 438, 1288-1304 (2014)>
=2014MNRAS.438.1288H 2014MNRAS.438.1288H
ADC_Keywords: Surveys ; QSOs ; Energy distributions
Keywords: surveys - galaxies: evolution - quasars: general
Abstract:
The mid-infrared-to-ultraviolet (0.1-10µm) spectral energy
distribution (SED) shapes of 407 X-ray-selected radio-quiet type 1
active galactic nuclei (AGN) in the wide-field 'Cosmic Evolution
Survey' (COSMOS) have been studied for signs of evolution. For a
sub-sample of 200 radio-quiet quasars with black hole mass estimates
and host galaxy corrections, we studied their mean SEDs as a function
of a broad range of redshift, bolometric luminosity, black hole mass
and Eddington ratio, and compared them with the Elvis et al.
(1994ApJS...95....1E 1994ApJS...95....1E, Cat. J/ApJS/95/1, hereafter E94) type 1 AGN mean
SED. We found that the mean SEDs in each bin are closely similar to
each other, showing no statistical significant evidence of dependence
on any of the analysed parameters. We also measured the SED dispersion
as a function of these four parameters, and found no significant
dependences. The dispersion of the XMM-COSMOS SEDs is generally larger
than E94 SED dispersion in the ultraviolet, which might be due to the
broader 'window function' for COSMOS quasars, and their X-ray-based
selection.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 68 413 Source properties in parameter space
--------------------------------------------------------------------------------
See also:
J/ApJS/95/1 : Atlas of Quasar Energy Distributions (Elvis+ 1994)
J/ApJ/759/6 : SEDs of type I AGN in COSMOS. I. XMM-COSMOS (Elvis+, 2012)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- XID [1/70076] X source sequential number
7- 11 F5.3 --- zsp [0.1/4.3] Spectrosocpic redshift
13- 18 F6.2 [Msun] logMBH [7.1/9.3]?=-99 Black hole mass (1)
20- 24 F5.2 [10-7W] logLbol [44/47] Bolometric luminosity calculated by
integrating the rest-frame SED (erg/s)
from 1µm to 40keV
26- 30 F5.3 --- Lbol/Ed [0/2.6]?=0 Bolometric to Eddingtom luminosity
ratio Lbol/LEdd
32- 36 F5.2 [10-7W] logLtot [44/48] Total luminosity, calculated by
integrating the rest-frame SED from 1.4GHz
to 40keV (erg/s)
38- 41 F4.1 % LIR/Ltot [12/77] Infrared-to-total luminosity ratio,
for LIR calculated by integrating the
rest-frame SED from 24 to 1µm
43- 46 F4.1 % Lopt/Ltot [2/60] Optical-to-total luminosity ratio,
for Lopt calculated by integrating the
rest-frame SED from 1µm to 912Å
48- 51 F4.1 % LX/Ltot [0/44] X-ray-to-total luminosity ratio,
for LX calculated by integrating the
rest-frame SED from 0.5 to 40keV
53- 56 F4.2 --- Lbol/Lopt [1.1/8.3] Bolometric-to-optical luminosity ratio
58- 62 F5.2 [10-7W] logLb.hc [44.1/46.9]?=0 Bolometric luminosity, calculated
by integrating the rest-frame host-corrected SED
from 1µm to 912Å for 203 quasars in the
XMM-COSMOS sample (erg/s)
64- 68 F5.2 --- Lbol/Lo.hc [1.1/11.5]?=0 Host-corrected bolometric to
optical luminosity ratio
--------------------------------------------------------------------------------
Note (1): estimates are from Trump et al. (2009ApJ...700...49T 2009ApJ...700...49T) and
Merloni et al. (2010ApJ...708..137M 2010ApJ...708..137M, Cat. J/ApJ/708/137).
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Elvis et al., Paper I 2012ApJ...759....6E 2012ApJ...759....6E, Cat. J/ApJ/759/6
(End) Patricia Vannier [CDS] 28-Nov-2014