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J/ApJ/696/924      UV and X-Ray radio-quiet QSOs              (Gibson+, 2009)

X-ray insights into the physics of mini-BAL quasar outflows. Gibson R.R., Brandt W.N., Gallagher S.C., Schneider D.P. <Astrophys. J., 696, 924-940 (2009)> =2009ApJ...696..924G
ADC_Keywords: QSOs ; Ultraviolet ; X-ray sources Keywords: galaxies: active - galaxies: nuclei - quasars: absorption lines - quasars: emission lines - X-rays: general Abstract: We examine the ultraviolet and X-ray properties of 256 radio-quiet Sloan Digital Sky Survey quasars (QSOs) observed in X-rays with Chandra and/or XMM-Newton in order to study the relationship between QSOs with broad CIV absorption lines (BALs; width>2000km/s) and those with CIV mini-BALs (here defined to have widths of 1000-2000km/s). Our sample includes 42 BAL and 48 mini-BAL QSOs. The relative X-ray brightness and hard spectral slopes of the mini-BAL population are, on average, intermediate between those of BAL and non-BAL QSOs, as might be expected if narrower and broader absorption line outflows are physically related. However, a significant population of mini-BALs has outflow velocities higher than would be expected for BAL QSOs of the same relative X-ray brightness. Consistently strong X-ray absorption is apparently not required to accelerate at least some mini-BALs to high outflow velocities. Description: We have obtained SDSS and X-ray spectra for SDSS DR5 QSOs cataloged by Schneider et al. (2007, Cat. VII/252) which also have archived Chandra or XMM-Newton X-ray observations publicly available as of 2007 July 26 (for Chandra) or 2007 August 22 (for XMM-Newton). We also obtained observations of X-ray bright mini-BAL QSOs as part of XMM-Newton AO6 observing cycle in 2007 May 20 and Aug 06. These sources were originally identified in the catalog of Trump et al. (2006, Cat. J/ApJS/165/1) to have broad absorption features based on their analysis of spectra available in SDSS Data Release 3. To test for absorption feature variability, we have also obtained Hobby-Eberly Telescope (HET) Marcario Low Resolution Spectrograph (LRS) spectra for these sources in 2007 Nov 21 and 2008 Mar 1. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 146 256 UV and X-Ray radio-quiet source properties
See also: B/chandra : The Chandra Archive Log (CXC, 1999-) B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2009) VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010) J/ApJ/692/758 : BAL QSOs in SDSS-DR5 (Gibson+, 2009) J/MNRAS/399/2231 : SDSS DR5 BALQSO catalog (Scaringi+, 2009) J/ApJS/165/1 : BAL QSOs from SDSS DR3 (Trump+, 2006) J/ApJ/665/990 : SDSS DR2 BAL QSOs (Ganguly+, 2007) J/AJ/125/1711 : Broad Absorption Line Quasars from SDSS (Reichard+, 2003) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 19 A19 --- SDSS SDSS-DR5 name ( 21- 25 F5.3 --- z SDSS-DR5 redshift 27- 36 A10 --- ObsID Chandra (four-digit) or XMM (ten-digit) observation number 38- 42 F5.1 ks ExpT Exposure time 44- 49 F6.1 km/s AI Absorption index for CIVλ1549 51- 56 F6.1 km/s BI Extended balnicity index, BI0, for CIV1549 58- 63 I6 km/s V(min) ? Outflow velocity corresponding to the longest CIV wavelength (1) 65- 70 I6 km/s V(max) ? Outflow velocity corresponding to the shortest CIV wavelength (1) 72- 77 F6.3 [10-7W/Hz] logLuv Log monochromatic luminosity at 2500Å 79- 82 F4.1 --- SN1700 Signal to noise ratio (2) 84 A1 --- l_logLx Limit flag on logLx 85- 90 F6.3 [10-7W/Hz] logLx Log monochromatic luminosity at 2keV 92- 96 F5.3 [10-7W/Hz] e_logLx ? logLx uncertainty (3) 98-102 F5.2 --- HR ? Hardness ratio (4) 104-107 F4.2 --- e_HR ? Error on HR computed formally 109-113 F5.2 --- Gamma ? Power-law photon index Γ 115-118 F4.2 --- e_Gamma ? Gamma uncertainty 120 A1 --- l_Aox Limit flag on Aox 121-126 F6.3 --- Aox Optical-to-X-ray spectral index 128-132 F5.3 --- e_Aox ? Aox uncertainty 134 A1 --- l_DAox Limit flag on DAox 135-140 F6.3 --- DAox Difference between measured and predicted αox 142-146 F5.3 --- e_DAox ? DAox uncertainty
Note (1): We define νmax as the outflow velocity corresponding to the shortest wavelength which is identified as part of a CIV mini-BAL or BAL trough. Similarly, νmin is the outflow velocity associated with the longest wavelength in a trough. See section 3.3 for further details. Note (2): SN1700 is defined as the median of the flux divided by the noise (as reported by the SDSS pipeline) for all spectral bins in the 1650-1700Å region. Note (3): Errors are estimated using the method in Section 2.2 Note (4): The hardness ratio, HR=(H-S)/(H+S) is calculated from H, the number of X-ray counts with observed-frame energies of 2-8keV, and S, the number of counts with observed-frame energies in the 0.5-2keV range. See section 3.2 for further details.
History: From electronic version of the journal
(End) Emmanuelle Perret [CDS] 02-May-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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