| Issue |
A&A
Volume 433, Number 2, April II 2005
|
|
|---|---|---|
| Page(s) | 757 - 764 | |
| Section | Catalogs and data | |
| DOI | https://doi.org/10.1051/0004-6361:20042163 | |
| Published online | 22 March 2005 | |
New optical polarization measurements of quasi-stellar objects. The data *,**
1
Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Août 17, B5C, 4000 Liège, Belgium e-mail: sluse@astro.ulg.ac.be
2
European Southern Observatory, Alonso de Cordova 3107, Santiago 19, Chile
3
BIRA - IASB, Avenue Circulaire 3, 1180 Bruxelles, Belgium
4
Canada France Hawaii Telescope, 65-1238 Mamalahoa Highway, Kamuela, Hawaii 96743, USA
5
Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile
Received:
12
October
2004
Accepted:
15
December
2004
New linear polarization measurements (mainly in the
V band) are presented for 203 quasi-stellar objects (QSOs). The
sample is made up of 94 QSOs located in the North Galactic Pole
(NGP) region and of 109 QSOs in the South Galactic Pole (SGP)
region. First time measurements have been obtained for 184
QSOs. Among them, 109 known radio-emitters, 42 known Broad
Absorption Line (BAL) QSOs, and 1 gravitationally lensed
quasi-stellar object. We found high polarization levels (
%)
for 12 QSOs, including the BAL QSO SDSS J1409+0048. For 10 objects, measurements obtained at different epochs do exist. Two of
them show evidence for variability: the highly polarized BL Lac
candidate PKS 1216-010 and the radio source
PKS 1222+037.
Key words: quasars: general / polarization / gravitational lensing
© ESO, 2005
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