2000ApJS..127...11G

Query : 2000ApJS..127...11G

2000ApJS..127...11G - Astrophys. J., Suppl. Ser., 127, 11-26 (2000/March-0)

Optical variability of blazars.

GHOSH K.K., RAMSEY B.D., SADUN A.C. and SOUNDARARAJAPERUMAL S.

Abstract (from CDS):

In this paper we show the results of our monitoring the flux variability of 15 blazars, within the redshift range of 0.07-2.06, all with a visual magnitude range between 14 and 20 mag. Because blazars have displayed variability on diverse timescales, we have chosen to study them over both short and long timescales, ranging from minutes to years. These blazars were observed on 58 nights between 1995 March and 1998 June. Individual sources are discussed in detail. For example, one of our sources, Mrk 501, showed microvariability of as much as 0.13 mag change within 12 minutes. The usual parameters for size, mass, and luminosity are calculated. Relativistic beaming is implied by the data. We also searched for correlations between amplitude of variability, redshift, and luminosity. We found few, if any, such correlations. Discussion and conclusions are given for these and other results as implied by the data.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active - Galaxies: Individual: Alphanumeric: 3C 66A - galaxies: individual (PKS 0235+164, PKS 0528+134) - galaxies: individual (PKS0735+178) - galaxies: individual (PKS 0736+017) - galaxies: individual (PKS 0754+100) - Galaxies: Individual: Alphanumeric: OJ 287 - galaxies: individual (PKS 1156+295) - Galaxies: Individual: Alphanumeric: 3C 273 - galaxies: individual (3C279) - galaxies: individual (PG 1418+546) - galaxies: individual (Mrk 501) - Galaxies: Individual: Alphanumeric: 3C 390.3 - galaxies: individual (3C 446) - galaxies: individual (CTA 102) - galaxies: photometry

CDS comments: PKS 0757+095 = PKS J0757+0956. PKS 1229+020 = PKS J1229+0203. PKS 2232+114 = PKS J2232+1143.

Simbad objects: 15

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Number of rows : 15
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 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
2 QSO B0235+1624 BLL 02 38 38.93010450 +16 36 59.2745528   16.46 15.50 15.92   ~ 1614 2
3 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 1004 1
4 QSO J0738+1742 BLL 07 38 07.39375312 +17 42 18.9981506   16.76 16.22 15.78   ~ 1045 1
5 QSO B0736+01 Bla 07 39 18.03389906 +01 37 04.6177501   16.90 16.47 16.19   ~ 738 1
6 QSO B0754+10 BLL 07 57 06.64295154 +09 56 34.8522544   15.43 15.00 15.99   ~ 461 1
7 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
8 Ton 599 Bla 11 59 31.83391383 +29 14 43.8268224   14.80 14.41 17.652 13.39 ~ 989 1
9 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
10 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
11 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
12 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
13 3C 390.3 Bla 18 42 08.9904975672 +79 46 17.127835104   16.06 15.38     ~ 1381 1
14 3C 446 BLL 22 25 47.25929101 -04 57 01.3907626   18.83 18.39 16.3   ~ 863 1
15 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2

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