J/MNRAS/444/2498 Radio-Quiet BAL quasars sample (Rochais+, 2014)
Radio-loud and radio-quiet BAL quasars: a detailed ultraviolet comparison.
Rochais T.B., Dipompeo M.A., Myers A.D., Brotherton M.S., Runnoe J.C.,
Hall S.W.
<Mon. Not. R. Astron. Soc., 444, 2498-2506 (2014)>
=2014MNRAS.444.2498R 2014MNRAS.444.2498R
ADC_Keywords: QSOs ; Redshifts
Keywords: quasars: absorption lines - quasars: emission lines - quasars: general
Abstract:
Studies of radio-loud (RL) broad absorption line (BAL) quasars
indicate that popular orientation-based BAL models fail to account for
all observations. Are these results extendable to radio-quiet (RQ) BAL
quasars? Comparisons of RL and RQ BAL quasars show that many of their
properties are quite similar. Here, we extend these analyses to the
rest-frame ultraviolet (UV) spectral properties, using a sample of 73
RL and 473 RQ BAL quasars selected from the Sloan Digital Sky Survey.
Each RQ quasar is individually matched to an RL quasar in both
redshift (over the range 1.5<z<3.5) and continuum luminosity. We
compare several continuum, emission line, and absorption line
properties, as well as physical properties derived from these
measurements. Most properties in the samples are statistically
identical, though we find slight differences in the velocity structure
of the BALs that cause apparent differences in C iv emission line
properties. Differences in the velocities may indicate an interaction
between the radio jets and the absorbing material. We also find that
UV FeII emission is marginally stronger in RL BAL quasars. All of
these differences are subtle, so in general we conclude that RL and RQ
BAL QSOs are not fundamentally different objects, except in their
radio properties. They are therefore likely to be driven by similar
physical phenomena, suggesting that results from samples of RL BAL
quasars can be extended to their RQ counterparts.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 51 473 Radio-Quiet BAL quasars selected for the comparisons
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See also:
II/276 : SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+ 2007)
J/ApJ/692/758 : BAL QSOs in SDSS-DR5 (Gibson+, 2009)
J/MNRAS/427/1135 : Properties of radio-loud BAL quasars (DiPompeo+, 2012)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Object name (HHMMSS.ss+DDMMSS.s)
20- 27 F8.4 deg RAdeg Right ascension (J2000)
29- 36 F8.4 deg DEdeg Declination (J2000)
38- 43 F6.4 --- z [1.4/3.5] Redshift
45- 51 A7 --- Type BAL-Type (1)
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Note (1): BAL-Types are:
HiBAL = high-ionization BAL quasars, where the BALs are due to elements
with high-ionization states, such as CIV λ1549,
SiIV λ1397, and NV λ1240.
LoBAL = low-ionization BAL quasars, where the BALs are formed from elements
with lower ionizations, such as MgII λ2799.
FeLoBAL = iron LoBALs, that also show absorption from
FeII λλ2380, 2600, and λ2750.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 28-Apr-2015