1998A&A...340..371H


Query : 1998A&A...340..371H

1998A&A...340..371H - Astronomy and Astrophysics, volume 340, 371-380 (1998/12-2)

Polarization properties of a sample of broad absorption line and gravitationally lensed quasars.

HUTSEMEKERS D., LAMY H. and REMY M.

Abstract (from CDS):

New broad-band linear polarization measurements have been obtained for a sample of 42 optically selected QSOs including 29 broad absorption line (BAL) QSOs. The polarization properties of different sub-classes have been compared, and possible correlations with various spectral indices searched for. The main results of our study are: (1) Nearly all highly polarized QSOs of our sample belong to the sub-class of BAL QSOs with low-ionization absorption features (LIBAL QSOs). (2) The range of polarization is significantly larger for LIBAL QSOs than for high-ionization (HI) BAL QSOs and non-BAL QSOs. (3) There is some indication that HIBAL QSOs as a class may be more polarized than non-BAL QSOs and therefore intermediate between LIBAL and non-BAL QSOs, but the statistics are not compelling from the sample surveyed thus far. (4) For LIBAL QSOs, the continuum polarization appears significantly correlated with the line profile detachment index, in the sense that LIBAL QSOs with P Cygni-type profiles are more polarized. No correlation was found with the strength of the low- or the high-ionization absorption features, nor with the strength or the width of the emission lines. These results are consistent with a scenario in which LIBAL QSOs constitute a different class of radio-quiet QSOs with more absorbing material and more dust. Higher maximum polarization can therefore be reached, while the actually measured polarization depends on the geometry and orientation of the system as do the line profiles. The observed correlation is interpreted within the framework of recent ``wind-from-disk'' models.

Abstract Copyright:

Journal keyword(s): polarization - galaxies: quasars: absorption lines - galaxies: quasars: general - cosmology: gravitational lensing

VizieR on-line data: <Available at CDS (J/A+A/340/371): table2.dat table3.dat>

Simbad objects: 43

goto View the references in ADS

Number of rows : 43
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 LBQS 0006+0230 QSO 00 08 57.3972757656 +02 47 37.526988444   18.57 18.34     ~ 23 0
2 LBQS 0013-0029 QSO 00 16 02.4050159808 -00 12 25.077257064   18.67 18.36     ~ 186 0
3 PB 5901 QSO 00 22 27.4798833168 +01 24 12.564927324   17 18.9     ~ 79 0
4 LBQS 0021-0213 QSO 00 24 10.8946824312 -01 56 46.879465092     18.7     ~ 32 0
5 LBQS 0025-0151 QSO 00 27 33.8146968576 -01 34 52.434665364   18 18     ~ 37 0
6 LBQS 0029+0017 QSO 00 31 35.5729847640 +00 34 21.268298424     18     ~ 79 0
7 QSO J0046+0104 QSO 00 46 13.5471044208 +01 04 25.715143020   18.70 18.35     ~ 115 0
8 LBQS 0059-2735 QSO 01 02 17.0407393968 -27 19 49.976679540   18.0       ~ 88 0
9 QSO B0137-018 QSO 01 40 18.2026101144 -01 38 05.895278160   18.7 18.0     ~ 41 0
10 QSO B0142-100 QSO 01 45 16.5958283760 -09 45 17.265131352   17.23 16.95     ~ 236 1
11 QSO B0145+042 QSO 01 48 17.5092687840 +04 31 19.145161632   18 18.8     ~ 42 0
12 QSO B0254-3327B QSO 02 56 47.8655029608 -33 15 24.639439608   17.8 16     ~ 34 0
13 QSO B0333-3801 QSO 03 34 52.4133825768 -37 51 08.963967168   18.5 18.5     ~ 16 0
14 QSO B0335-336 QSO 03 37 21.7455375168 -33 29 12.485096880   17.7 18.5     ~ 36 0
15 QSO B0903+1734 QSO 09 06 38.1896237760 +17 22 23.423856456   17.3 18.0     ~ 61 0
16 LBQS 1009-0252 QSO 10 12 15.89 -03 07 03.1   18.82 18.71     ~ 74 1
17 QSO B1011+0906 QSO 10 13 41.8614876864 +08 51 26.158228128   17.8 17.7     ~ 48 0
18 LBQS 1029-0125 QSO 10 31 49.5211442976 -01 41 11.277813984     18.4     ~ 29 0
19 QSO B1104-181 QSO 11 06 33.3845199936 -18 21 23.829049296   15.8 15.9 15.7   ~ 312 1
20 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 652 2
21 QSO B1120+0154 QSO 11 23 20.7258496872 +01 37 47.506567620   16.45 16.12     ~ 121 1
22 LBQS 1146+0207 QSO 11 49 00.3359713848 +01 51 17.068716396   17.96 17.76     ~ 38 0
23 QSO B1208+101 QSO 12 10 57.0369007056 +09 54 27.069784092     17.5     ~ 112 1
24 LBQS 1208+1535 QSO 12 11 25.4861849808 +15 18 51.488880660     18.0     ~ 54 0
25 LBQS 1212+1445 QSO 12 14 40.2739153080 +14 28 59.288879460     17.9     ~ 63 0
26 LBQS 1231+1320 QSO 12 33 55.5976605936 +13 04 09.188935572   18.84 18.7     ~ 29 0
27 QSO B1232+134 QSO 12 34 58.1530523808 +13 08 54.973817196     19.5     ~ 45 0
28 LBQS 1235+0857 QSO 12 37 54.8223203520 +08 41 06.765457956     18.2     ~ 45 0
29 QSO B1246-0542 QSO 12 49 13.8611499816 -05 59 19.059589068   17.09 16.73     ~ 164 0
30 QSO J1311-0552 QSO 13 11 36.5570912928 -05 52 38.632308600   17.85 17.44     ~ 74 0
31 LBQS 1331-0108 QSO 13 34 28.0613578464 -01 23 49.042287744   18.61 17.97     ~ 71 0
32 QSO J1415+1129 QSO 14 15 46.25 +11 29 43.4   17.63 17.23     ~ 618 0
33 QSO B1429-008B QSO 14 32 28.9493827968 -01 06 13.604773608   21.32 21.03 20.85   ~ 23 1
34 LBQS 1429-0053 QSO 14 32 29.2470168768 -01 06 16.088882724   18.10 17.88     ~ 100 0
35 LBQS 1442-0011 QSO 14 45 14.8687831224 -00 23 58.163029656     18.2     ~ 36 0
36 LBQS 2114-4347 QSO 21 17 19.3934767488 -43 34 24.603781512   18.2 18.3     ~ 18 0
37 LBQS 2122-4231 QSO 21 25 12.5477441544 -42 18 46.777377708     18.1     ~ 12 0
38 LBQS 2154-2005 QSO 21 57 05.9237012016 -19 51 13.586648940     18.3     ~ 30 0
39 LBQS 2211-1915 QSO 22 14 37.8807173904 -19 00 57.134588580     18.20     ~ 23 0
40 QSO B2225-055 QSO 22 28 30.3464915928 -05 18 54.694692252   18.45 17.70     ~ 155 0
41 LBQS 2230+0232 QSO 22 32 35.2154152488 +02 47 55.814764596   18.387 18.038     ~ 90 0
42 QSO B2240-370 QSO 22 43 46.0542456744 -36 47 04.647387120     18.0     ~ 29 0
43 LBQS 2350-0045A QSO 23 52 53.5177514496 -00 28 50.433172356   18.73 18.41     ~ 82 0

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2022.05.24-08:34:29

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