2005MNRAS.356..607S

Query : 2005MNRAS.356..607S

2005MNRAS.356..607S - Mon. Not. R. Astron. Soc., 356, 607-614 (2005/January-2)

Intranight optical variability of BL Lacs, radio-quiet quasars and radio-loud quasars.

STALIN C.S., GUPTA A.C., GOPAL-KRISHNA, WIITA P.J. and SAGAR R.

Abstract (from CDS):

We report monitoring observations of 20 high-luminosity active galactic nuclei (AGN), 12 of which are radio-quiet quasars (RQQs). Intranight optical variability (INOV) was detected for 13 of the 20 objects, including 5 RQQs. The variations are distinctly stronger and more frequent for blazars than for the other AGN classes. By combining these data with results obtained earlier in our programme, we have formed an enlarged sample consisting of 9 BL Lacs, 19 RQQs and 11 lobe-dominated radio-loud quasars (RLQs). The moderate level of rapid optical variability found for both RQQs and radio lobe-dominated quasars (LDQs) argues against a direct link between INOV and radio loudness. We supplemented the present observations of 3 BL Lacs with additional data from the literature. In this extended sample of 12 well observed BL Lacs, stronger INOV is found for the EGRET detected subset.

Abstract Copyright: 2004 RAS

Journal keyword(s): galaxies: active - BL Lacertae objects: general - galaxies: jets - galaxies: photometry - quasars: general

CDS comments: Table 3: comparison stars not identified.

Simbad objects: 31

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Number of rows : 31
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 ICRF J000559.2+160949 Sy1 00 05 59.2378545384 +16 09 49.021968096   16.51 16.40     ~ 307 1
2 9C J0028+3103 QSO 00 28 10.7266056864 +31 03 48.087918792   15.47 15.22 14.56   ~ 31 2
3 2MASS J00454722+0410233 Sy1 00 45 47.2231233240 +04 10 23.386759392   15.88 16.00     ~ 163 0
4 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
5 QSO B0235+1624 BLL 02 38 38.93010450 +16 36 59.2745528   16.46 15.50 15.92   ~ 1614 2
6 PMN J0416+0105 BLL 04 16 52.4945693352 +01 05 23.899102620   16.86 16.38 16   ~ 302 1
7 QSO B0537-441 BLL 05 38 50.36155950 -44 05 08.9390233   15.77 16.48 16   ~ 924 2
8 QSO J0738+1742 BLL 07 38 07.39375312 +17 42 18.9981506   16.76 16.22 15.78   ~ 1045 1
9 6C 080602+313052 BLL 08 09 13.4442417384 +31 22 22.920826044     15.70 18.3   ~ 23 1
10 1RXP J082740.1+094210 V* 08 27 40.2001470024 +09 42 08.081459352     15.50     ~ 15 1
11 QSO B0832+2510 QSO 08 35 35.8061692320 +24 59 40.183955880   16.30 16.00     ~ 77 0
12 QSO J0849+5108 BLL 08 49 57.97685916 +51 08 29.0238146   19.37 18.78 17.79   ~ 270 2
13 US 1867 Sy1 08 53 34.2440799000 +43 49 02.336647692   17.15 16.91     ~ 106 0
14 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
15 US 737 QSO 09 35 02.5322373288 +43 31 10.637924844   15.92 15.93     ~ 78 1
16 US 796 QSO 09 38 57.0175740480 +41 28 21.216772452   16.94 16.75     ~ 144 1
17 US 995 Sy1 09 48 59.4746090952 +43 35 18.955277736   17.17 16.86     ~ 51 0
18 GD 122 WD* 10 32 05.8535765904 +32 40 07.522947732   16.4   16.15   DBAZ4 48 1
19 Ton 605 HB* 12 16 53.6748432768 +30 04 08.692883544   16.110 15.98     B 223 0
20 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
21 QSO B1216-010 BLL 12 18 34.9299611304 -01 19 54.342898428 18.43 18.30 18.01 18.2   ~ 119 1
22 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 917 1
23 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
24 [VV98] J142455.6+421405 QSO 14 24 55.5356948544 +42 14 07.648695744   17.13 16.96     ~ 56 0
25 Ton 202 Sy1 14 27 35.6076948744 +26 32 14.541190476   15.96 16.00     ~ 315 0
26 2MASS J14464593+4035057 Sy1 14 46 45.9392259288 +40 35 05.797233636   16.28 16.11     ~ 302 0
27 QSO B1521+1009 QSO 15 24 24.5234088744 +09 58 29.087917572   15.74 16.2     ~ 145 0
28 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
29 7C 163119.39+393037.00 QSO 16 33 02.1049267344 +39 24 27.390971376   17.22 16.92     ~ 64 1
30 QSO B1750+5046 QSO 17 51 16.6292203440 +50 45 38.789268912   14.997 15.097     ~ 30 2
31 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1

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