J/ApJ/702/767 CIV and FeKα Baldwin effects in AGNs (Wu+, 2009)
Probing the origins of the C IV and Fe kα Baldwin Effects.
Wu J., Vanden Berk D.E., Brandt W.N., Schneider D.P., Gibson R.R., Wu J.
<Astrophys. J., 702, 767-778 (2009)>
=2009ApJ...702..767W 2009ApJ...702..767W
ADC_Keywords: QSOs ; Redshifts ; Equivalent widths ; Spectra, ultraviolet ;
X-ray sources ; Active gal. nuclei ; Line Profiles
Keywords: quasars: emission lines
Abstract:
We use UV/optical and X-ray observations of 272 radio-quiet Type 1
active galactic nuclei and quasars to investigate the CIV Baldwin
Effect (BEff). The UV/optical spectra are drawn from the Hubble Space
Telescope, International Ultraviolet Explorer and Sloan Digital Sky
Survey archives. The X-ray spectra are from the Chandra and XMM-Newton
archives. We apply correlation and partial-correlation analyses to the
equivalent widths (EWs), continuum monochromatic luminosities, and
αox, which characterizes the relative X-ray to UV brightness.
The EW of the CIVλ1549 emission line is correlated with both
αox and luminosity. In our sample, narrow Fe Kα 6.4keV
emission lines are detected in 50 objects.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 73 272 UV properties of the combined sample
table3.dat 111 50 UV and X-ray properties of Sample A objects
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See also:
VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
B/hst : HST Archived Exposures Catalog (STScI, 2007)
J/ApJ/696/924 : UV and X-Ray radio-quiet QSOs (Gibson+, 2009)
J/ApJS/183/17 : The SDSS DR5/XMM-Newton quasar survey (Young+, 2009)
J/ApJ/685/773 : X-ray-UV relations in SDSS DR5 QSOs (Gibson+, 2008)
J/AJ/133/313 : AGN from RASS and SDSS DR5 (Anderson+, 2007)
J/ApJ/657/116 : X-ray and UV parameters of radio-quiet quasars (Kelly+,
2007)
J/AJ/133/1780 : GALEX/SDSS quasar catalog (Trammell+, 2007)
J/ApJ/641/78 : CIV variability in 105 SDSS quasars (Wilhite+, 2006)
J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)
J/MNRAS/301/1019 : Seyfert galaxies/radio-quiet QSO correlation (Roy+, 1998)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Name Object name
25- 29 F5.3 --- z Redshift
31- 35 F5.2 [10-7W/Hz] logL2500 Log monochromatic luminosity at
2500 Angstroms in units of erg/s/Hz
37- 40 F4.2 [10-7W/Hz] e_logL2500 ? Uncertainty in logL2500
42- 46 F5.1 0.1nm EW CIV equivalent width in Angstroms
48- 51 F4.1 0.1nm e_EW Uncertainty in EW
53- 58 F6.3 --- aox Optical/X-ray spectral index
60- 64 F5.3 --- e_aox ? Uncertainty in aox
66 I1 --- l_aox [0/1] 1: indicates aox is an upper limit
68- 71 A4 --- Inst Spectrum origin (HST, IUE or SDSS)
73 A1 --- S [ABC] Sample code (1)
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Note (1): The "combined sample" of quasar in our study is drawn from
three sources, with spectra from SDSS (189), HST (47), and IUE (36):
* 50 objects from Jiang et al. (2006ApJ...644..725J 2006ApJ...644..725J), referred as "Sample A"
* 98 objects from Gibson et al. 2008 (Cat. J/ApJ/685/773), referred
as "Sample B";
* 124 objects from Just et al. (2007ApJ...665.1004J 2007ApJ...665.1004J), referred as "Sample C".
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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- 14 A14 --- Name Object name
16- 20 F5.3 --- z Redshift
22- 23 A2 --- l_EW [≲] Limit flag on EW
24- 28 F5.1 eV EW Fe Kα line equivalent width
30- 34 F5.1 eV E_EW ? Upper limit uncertainty in EW
36- 40 F5.1 eV e_EW ? Lower limit uncertainty in EW
42- 46 F5.2 [10-7W/Hz] lgL2keV Log monochromatic luminosity at 2keV
48- 51 F4.2 [10-7W/Hz] e_lgL2keV Uncertainty in L2keV
53- 54 A2 --- l_lgLFeKa [≲] Limit flag on LFeKa
55- 59 F5.2 [10-7W] lgLFeKa log(Fe.Kα) line luminosity
61- 64 F4.2 [10-7W] E_lgLFeKa ? Upper limit uncertainty in LFeKa
66- 69 F4.2 [10-7W] e_lgLFeKa ? Lower limit uncertainty in LFeKa
71- 72 A2 --- l_lgfFeKa [≲] Limit flag on fFeKa
73- 78 F6.2 [mW/m2] lgfFeKa log(Fe.Kα) line flux in erg/s/cm2
80- 83 F4.2 [mW/m2] E_lgfFeKa ? Upper limit uncertainty in fFeKa
85- 88 F4.2 [mW/m2] e_lgfFeKa ? Lower limit uncertainty in fFeKa
90- 94 F5.2 [10-7W] lgLCIV Log CIV line luminosity (erg/s)
96- 99 F4.2 [10-7W] e_lgLCIV Uncertainty in LCIV
101-106 F6.2 [mW/m2] lgfCIV Log CIV line flux in erg/s/cm2
108-111 F4.2 [mW/m2] e_lgfCIV Uncertainty in fCIV
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 30-Sep-2011