J/ApJS/176/355 AGN X-Ray emission and black holes (Kelly+, 2008)
Observational constraints on the dependence of radio-quiet quasar X-ray emission
on black hole mass and accretion rate.
Kelly B.C., Bechtold J., Trump J.R., Vestergaard M., Siemiginowska A.
<Astrophys. J. Suppl. Ser., 176, 355-373 (2008)>
=2008ApJS..176..355K 2008ApJS..176..355K
ADC_Keywords: QSOs ; X-ray sources
Keywords: accretion, accretion disks - galaxies: active - quasars: general
ultraviolet: galaxies - X-rays: galaxies
Abstract:
In this work we use a sample of 318 radio-quiet quasars (RQQs) to
investigate the dependence of the ratio of optical/UV flux to X-ray
flux, αox, and the X-ray photon index, ΓX, on black
hole mass, UV relative to Eddington luminosity, and X-ray relative to
Eddington luminosity. Our sample is drawn from the literature, with
X-ray data from ROSAT and Chandra, and optical data mostly from the
SDSS; 153 of these sources have estimates of ΓX from Chandra.
We estimate MBH using standard estimates derived from the Hβ,
MgII, and CIV broad emission lines. To date, this is the largest study
of the dependence of RQQ X-ray parameters on black hole mass and
related quantities, and the first to attempt to correct for the large
statistical uncertainty in the broad-line mass estimates.
Description:
In this analysis we combine 169 RQQs from Kelly et al.
(2007ApJ...665.1489K 2007ApJ...665.1489K) with 149 RQQs from the main SDSS sample of
Strateva et al. (2005, Cat. J/AJ/130/387) to create a sample of 318
RQQs. Out of these 318 sources, 276 (86.8%) are detected in the X-ray.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 61 318 Black Hole Parameters of the Sample
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See also:
VII/252 : SDSS-DR5 quasar catalog (Schneider+, 2007)
J/ApJS/165/1 : BAL QSOs from SDSS DR3 (Trump+, 2006)
J/AJ/130/387 : SDSS-ROSAT AGN data (Strateva+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Hour of Right Ascension (J2000)
4- 5 I2 min RAm Minute of Right Ascension (J2000)
7- 10 F4.1 s RAs Second of Right Ascension (J2000)
12 A1 --- DE- Sign of the Declination (J2000)
13- 14 I2 deg DEd Degree of Declination (J2000)
16- 17 I2 arcmin DEm Arcminute of Declination (J2000)
19- 22 F4.1 arcsec DEs Arcsecond of Declination (J2000)
24- 28 F5.3 --- z Redshift
30- 34 F5.2 [solMass] logMBL Log of broad line mass estimate
36- 39 F4.2 [solMass] e_logMBL Uncertainty in logMBL
41- 45 F5.2 [-] logLX Log of 2keV to Eddington
luminosity ratio (1)
47- 50 F4.2 [-] e_logLX Uncertainty in logLX
52- 56 F5.2 [-] logLUV Log of 2500Å to Eddington
luminosity ratio (1)
58- 61 F4.2 [-] e_logLUV Uncertainty in LogLUV
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Note (1): Where LEddington is calculated from the broad emission line
estimate of MBlackhole, MBL.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Jul-2009