2005A&A...442...97A

Query : 2005A&A...442...97A

2005A&A...442...97A - Astronomy and Astrophysics, volume 44297-107 (2005/10-4)

Polarization microvariability of BL Lacertae objects.

ANDRUCHOW I., ROMERO G.E. and CELLONE S.A.

Abstract (from CDS):

We present the results of a systematic observational campaign designed to search for microvariability in the optical polarization of BL Lac objects. We observed a sample formed by 8 X-ray-selected and 10 radio-selected sources, looking for rapid changes in both the degree of linear polarization and the corresponding polarization angle. The whole campaign was carried out during the last three years, and most of the objects were observed on at least two consecutive nights. The statistical properties of both classes of BL Lac objects are compared, and some general conclusions on the nature of the phenomenon are drawn. In general, radio selected sources seem to display higher duty cycles for polarimetric microvariability and, on average, they have a stronger polarization.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: BL Lacertae objects: general - polarization

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO B0118-272 BLL 01 20 31.6628068344 -27 01 24.636341064   15.89 15.56 15.49   ~ 288 1
2 QSO B0422+004 BLL 04 24 46.8421990080 +00 36 06.329375028 16.15 15.94 16.98     ~ 378 1
3 ESO 362-21 BLL 05 22 57.98464178 -36 27 30.8512953   15.26 14.62 14.48   ~ 873 2
4 QSO B0537-441 BLL 05 38 50.36155950 -44 05 08.9390233   15.77 16.48 16   ~ 924 2
5 PKS J0550-3216 BLL 05 50 40.5705144672 -32 16 16.484718648   16.07 15.5     ~ 424 1
6 PKS 0558-388 rG 06 00 22.1358535848 -38 53 54.230402004   16.12   14.84   ~ 13 1
7 QSO B0829+047 BLL 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 511 2
8 2MASS J10265858-1748587 BLL 10 26 58.5790468080 -17 48 58.866686460   18.39 16.60 17.02   ~ 56 0
9 PMN J1103-2329 BLL 11 03 37.6150845072 -23 29 31.203773520   17.00 16.55 16.61   ~ 405 1
10 QSO B1144-3755 BLL 11 47 01.37071212 -38 12 11.0235229   19.03 16.2 16.72   ~ 320 1
11 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
12 RX J1315.0-4236 BLL 13 15 03.3912307368 -42 36 49.760844084   18.07   16.59   ~ 114 0
13 RX J1442.8+1200 BLL 14 42 48.2771008152 +12 00 40.348597716   18.34 17.63 15.2   ~ 189 1
14 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
15 ESO 514-1 BLL 15 17 41.8134049824 -24 22 19.482207024   15.13 14.00 13.95   ~ 815 3
16 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
17 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
18 PKS J2009-4849 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 604 1
19 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1

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