1997A&A...321..123C

Query : 1997A&A...321..123C

1997A&A...321..123C - Astronomy and Astrophysics, volume 321123-128 (1997/5-1)

The optical variability of QSOs. II. The wavelength dependence.

CRISTIANI S., TRENTINI S., LA FRANCA F. and ANDREANI P.

Abstract (from CDS):

The long-term variability of a sample of 149 optically selected QSOs in the field of the Selected Area 94 has been studied in the R-band. The relations between variability and luminosity and between variability and redshift have been investigated by means of "robust" statistical estimators, allowing to disentangle the effects of the measurement errors. The results are compared with the corresponding properties of the variability in the B-band for the same sample. An anti-correlation between the R-band variability and the intrinsic luminosity is found, analogously to what is observed in the B-band. The amplitude of the R-band variability turns out to be smaller (of a factor 1.13±0.05) than the B-band variability. The implications in terms of the black-hole, starburst and microlensing models are discussed.

Abstract Copyright: ∼

Journal keyword(s): quasars: general

VizieR on-line data: <Available at CDS (J/A+A/321/123): table1>

Simbad objects: 149

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Number of rows : 149
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 B0243-0057 QSO 02 46 28.4970660672 -00 44 57.277753836   20.05 19.90     ~ 27 0
2 US 3142 QSO 02 46 29.3034876912 +01 40 15.551288400   20.4 19.46     ~ 13 0
3 QSO B0243-007 QSO 02 46 32.4470472024 -00 32 14.280794340   19.34 19.10     ~ 46 0
4 QSO B0243-0007 QSO 02 46 32.5459571088 +00 05 29.005535004   19.15 19.13     ~ 27 0
5 QSO B0243-0047 QSO 02 46 32.5607759808 -00 34 39.262216656   20.49 20.34     ~ 26 0
6 PB 6880 QSO 02 46 35.6269552128 -00 08 50.590887828   18.82 18.63     ~ 48 0
7 QSO B0244+0116 QSO 02 46 35.9361226968 +01 28 41.098962036   19.27 18.39     ~ 13 0
8 QSO B0244-0053 QSO 02 46 37.9491216984 -00 41 05.344232856   20.07 19.84     ~ 27 0
9 QSO B0244-0015 QSO 02 46 39.8847071304 -00 02 37.169798064   20.36 20.16     ~ 25 0
10 QSO B0244-0144 QSO 02 46 43.047 -01 31 49.88     19.16     ~ 7 0
11 PB 6881 QSO 02 46 47.1602494368 -01 45 34.854918624   18.5 18.85     ~ 19 1
12 QSO B0244-0057 QSO 02 46 50.9431336464 -00 44 57.379596360   19.93 19.58     ~ 36 0
13 PB 6882 Sy1 02 46 51.9154329792 -00 59 30.996862872   17.24 17.05     ~ 74 0
14 US 3152 QSO 02 46 57.6023422800 +01 59 11.552486280   19.6 18.58     ~ 15 0
15 QSO B0244-0009 QSO 02 47 01.1884459704 +00 03 30.224951784   20.21 19.67     ~ 32 0
16 QSO B0245-0104 QSO 02 47 39.1192774560 -00 52 21.203538708   20.91 20.64     ~ 26 0
17 QSO B0245-0100 QSO 02 47 47.6004977376 -00 48 10.178232300   19.91 19.72     ~ 27 0
18 QSO B0245-0014 QSO 02 47 48.8745551784 -00 01 47.576348796   19.68 19.46     ~ 36 0
19 QSO B0245-0152 QSO 02 47 50.531 -01 40 19.10     20.32     ~ 10 0
20 US 3163 QSO 02 47 51.2658677928 +01 31 49.018022580   19.0 19     ~ 15 0
21 PB 6886 QSO 02 47 53.4509985432 -01 32 25.209574080   18.9 19.38     ~ 20 0
22 PB 6887 QSO 02 47 56.3511964752 -00 15 56.137074192   18.59 18.34     ~ 49 0
23 QSO B0245-0052 QSO 02 48 01.1030822304 -00 40 15.878234064   19.66 19.47     ~ 26 0
24 QSO B0245+0023 QSO 02 48 07.7161778952 +00 35 52.101059460   19.81 19.62     ~ 24 0
25 QSO B0245-0038 QSO 02 48 20.9096513448 -00 25 46.850510676   19.89 19.59     ~ 26 0
26 [VV96] J024823.5+003552 QSO 02 48 23.5229352384 +00 35 52.734867612   20.10 19.78     ~ 26 0
27 QSO B0245+0037 QSO 02 48 31.8607735992 +00 49 33.090314052   20.00 19.76     ~ 21 0
28 US 3182 QSO 02 48 33.8962852272 -00 46 16.402313856   18.96 18.66     ~ 41 0
29 PB 6891 QSO 02 48 40.6425363624 +02 23 43.319067540   18.70 18.02     ~ 15 0
30 US 3187 QSO 02 48 40.7857332792 -00 35 48.317140536   19.24 18.97     ~ 40 0
31 US 3186 QSO 02 48 40.9875190176 -00 12 28.988464176   19.52 19.09     ~ 35 0
32 QSO B0246+0010 QSO 02 48 55.6052273832 +00 23 06.451786068   19.89 19.57     ~ 32 0
33 US 3193 QSO 02 48 56.5399596744 -00 56 04.279104996   19.12 18.91     ~ 34 0
34 QSO B0246-0146 QSO 02 49 05.9652005208 -01 34 08.815600740   19.0 19.34 18.8   ~ 11 0
35 QSO B0246-0019 QSO 02 49 07.3047558648 -00 06 49.527049320   20.01 19.87     ~ 27 0
36 US 3200 QSO 02 49 22.4070530856 +02 09 02.681394048   19.15 18.99     ~ 12 0
37 QSO B0246-0155 QSO 02 49 22.9604843664 -01 43 14.825899632     19.47     ~ 10 0
38 QSO B0246-0032 QSO 02 49 26.0272171440 -00 19 48.860193144   19.68 19.44     ~ 27 0
39 PB 6894 QSO 02 49 28.8630182040 +01 09 24.675228324   18.96 18.65     ~ 45 0
40 US 3205 QSO 02 49 29.1937283784 -00 21 04.319562960   19.82 19.35     ~ 35 0
41 QSO B0246-0147 QSO 02 49 31.9251585696 -01 34 37.930067760     19.90     ~ 14 0
42 QSO B0247+0020 QSO 02 49 44.1004467024 +00 33 17.393532336   19.90 19.64     ~ 28 0
43 QSO B0247+0141 QSO 02 49 44.8094103096 +01 53 39.974545572   18.42 18.67     ~ 18 0
44 QSO B0247+0110 QSO 02 49 45.2699731632 +01 22 50.443811040   19.48 18.83     ~ 10 0
45 US 3213 QSO 02 49 54.4963228392 +01 01 48.192936600   19.74 19.57     ~ 38 0
46 QSO B0247+0129 QSO 02 50 14.7385894656 +01 42 02.890998252   19.76 19.30     ~ 11 0
47 PB 6900 QSO 02 50 30.7772471256 -00 08 01.903678692   18.45 18.17     ~ 50 0
48 QSO B0248+0105 QSO 02 50 37.9689804336 +01 18 10.497509820   19.79 19.85     ~ 11 0
49 PB 6902 QSO 02 50 38.6860435344 -00 47 39.172062084   18.93 18.64     ~ 51 0
50 [VV96] J025039.8-004749 QSO 02 50 39.8265660456 -00 47 49.572247884   20.15 19.96     ~ 29 0
51 US 3224 QSO 02 50 48.6641901216 +00 02 07.464270120   19.22 18.85     ~ 49 1
52 QSO B0248+0054 QSO 02 50 57.7313388288 +01 06 54.822404700   19.13 19.22     ~ 26 0
53 QSO B0248+0035 QSO 02 51 01.0051898616 +00 48 02.923119432   19.64 19.38     ~ 35 0
54 QSO B0248-0006 QSO 02 51 02.6934341088 +00 06 00.614830392   19.35 19.01     ~ 36 0
55 QSO B0248+0130 QSO 02 51 09.8958092688 +01 42 58.583116728   19.76 19.49     ~ 11 0
56 QSO B0248-0039 QSO 02 51 28.7291650464 -00 26 50.892841284   19.56 19.41     ~ 34 0
57 QSO B0249-0058 QSO 02 51 45.0924214224 -00 46 39.840815316   19.59 19.71     ~ 29 0
58 QSO B0249-0052 QSO 02 51 46.7802027192 -00 40 35.667826104   19.90 19.94     ~ 29 0
59 QSO B0249-0058A QSO 02 51 48.5341274664 -00 46 37.804126332   19.80 19.58     ~ 38 0
60 QSO B0249+0118 QSO 02 51 51.8816596056 +01 30 57.201635700   19.47 19.54     ~ 11 0
61 LBQS 0249+0044 QSO 02 51 56.2977503184 +00 57 06.559367184   19.17 19.01     ~ 48 0
62 QSO B0249-0006B QSO 02 52 09.7979710608 +00 05 49.034633568   20.79 20.60     ~ 30 0
63 QSO B0249+0222 QSO 02 52 18.1179912048 +02 35 12.682668624   18.73 18.25     ~ 21 0
64 QSO B0249+0015 QSO 02 52 20.5415139240 +00 27 35.090045964   19.74 19.63     ~ 27 0
65 PB 6910 QSO 02 52 21.0234196488 +00 05 59.212342248   17.62 17.36     ~ 51 0
66 QSO B0249+0018 QSO 02 52 28.5549859176 +00 31 09.030777420   19.18 18.86     ~ 36 0
67 QSO B0249+0048 QSO 02 52 29.7560319840 +01 00 49.102663104   20.13 19.87     ~ 30 0
68 QSO B0250-0058 QSO 02 52 37.7984141880 -00 46 28.016718060   20.17 19.79     ~ 33 0
69 QSO B0250-0106 QSO 02 52 37.9212832992 -00 54 06.555276072   19.49 18.93     ~ 25 0
70 QSO B0250+0140 QSO 02 52 48.1536845952 +01 53 03.677380800   18.85 18.62     ~ 26 0
71 US 3268 QSO 02 52 57.1686777768 -01 02 20.833565712   19.97 19.53     ~ 47 0
72 QSO B0250+0108 QSO 02 53 09.2112652344 +01 20 32.711218080   19.89 19.68     ~ 10 0
73 QSO B0250-0051 QSO 02 53 13.9963769016 -00 39 02.513231028   20.20 19.82     ~ 33 0
74 US 3277 QSO 02 53 16.1401556544 +02 15 33.689446596   19.4 18.81     ~ 14 0
75 QSO B0250+0055 QSO 02 53 16.4594402184 +01 07 59.823931872   19.44 19.05     ~ 48 0
76 US 3279 QSO 02 53 19.5933551544 -01 34 13.849463856   19.4 19.15     ~ 10 0
77 QSO B0250-0009 QSO 02 53 23.6159447520 +00 02 30.487869888   20.13 19.74     ~ 33 0
78 QSO B0250-0039 QSO 02 53 24.6974377536 -00 26 55.846214880   20.02 19.56     ~ 35 0
79 US 3284 QSO 02 53 26.4020663376 -01 34 38.766788724   19.1 19.27     ~ 16 0
80 US 3285 QSO 02 53 29.8886697072 +02 06 44.285593860   20.4 19.05     ~ 13 0
81 QSO B0250+000 QSO 02 53 31.9335123144 +00 16 24.761323164   19.39 19.17     ~ 55 0
82 US 3293 QSO 02 53 40.9450108608 +00 11 10.026852000   19.19 18.83     ~ 59 0
83 QSO B0251-0001B QSO 02 53 56.0802764640 +00 10 57.350032680   19.76 19.55     ~ 40 0
84 QSO B0251-0023 QSO 02 53 56.8181975328 -00 11 23.910791676   19.35 19.05     ~ 34 0
85 QSO B0251+0017 QSO 02 54 01.4527556256 +00 29 16.138947372   19.65 19.45     ~ 33 0
86 QSO B0251-0004 QSO 02 54 22.8600795312 +00 07 58.838567628   20.49 20.08     ~ 35 0
87 QSO B0251-0153 QSO 02 54 25.4410816704 -01 41 25.421363448     19.85     ~ 10 0
88 QSO B0251-0101 QSO 02 54 32.3277310272 -00 49 32.996859384   19.81 19.51     ~ 23 0
89 PB 6925 QSO 02 54 32.5250543496 -00 42 20.075671260   18.74 18.52     ~ 52 0
90 PB 6926 QSO 02 54 43.3157936880 +01 53 18.281009616   17.91 18.00     ~ 18 0
91 US 3333 QSO 02 55 05.6785183392 +00 25 23.030624640   18.09 17.90     ~ 49 0
92 QSO B0252-0005 QSO 02 55 13.0345513296 +00 06 39.427249716   19.59 19.49     ~ 55 0
93 PB 6929 QSO 02 55 15.2058379392 +01 48 28.684266840   18.23 18.07     ~ 39 0
94 QSO B0252-0014 QSO 02 55 28.9334212680 -00 02 19.200152688   19.76 19.43     ~ 41 0
95 US 3354 QSO 02 55 47.0592584280 +00 38 14.946500508   18.98 19.4     ~ 34 0
96 PB 6933 QSO 02 55 59.9085826440 +00 53 11.444284428   18.94 18.78     ~ 42 0
97 US 3366 QSO 02 56 00.5864159712 -01 15 43.458273072   19.0 19.20     ~ 10 0
98 SDSS J025602.56+005255.4 QSO 02 56 02.5666086600 +00 52 55.362441108   19.87 19.28     ~ 28 0
99 QSO B0253+0058 QSO 02 56 07.2504632664 +01 10 38.606304864   19.58 19.11     ~ 69 0
100 QSO B0253+0144 QSO 02 56 09.8059914600 +01 56 34.231637868   19.24 19.38     ~ 13 0
101 PB 6936 QSO 02 56 14.0543524728 +00 39 41.077561320   19.65 19.29     ~ 39 0
102 PB 6937 QSO 02 56 16.5307343496 -01 26 38.218679988   17.4 17.00     ~ 39 1
103 QSO B0253-0057 QSO 02 56 19.0134804984 -00 45 01.338049620   18.37 18.20     ~ 39 0
104 QSO B0254-0137 QSO 02 56 40.4159397048 -01 25 45.433782156   19.32 19.06     ~ 20 0
105 PB 6940 QSO 02 56 44.6911855488 +00 12 46.046020716   18.31 18.10     ~ 68 0
106 QSO B0254+0042 QSO 02 56 58.6243108920 +00 54 47.577814308   19.68 19.39     ~ 36 0
107 QSO B0254+0126 QSO 02 57 01.1219013624 +01 38 14.338519620   19.58 19.42     ~ 10 0
108 QSO B0254-0114 QSO 02 57 02.0823150456 -01 02 17.271095244   19.54 19.32     ~ 33 0
109 QSO B0254-0022 QSO 02 57 05.8741576320 -00 10 53.491318716   19.70 19.40     ~ 32 0
110 QSO B0254-0113 QSO 02 57 13.0702592568 -01 01 57.747440928   19.67 19.47     ~ 41 0
111 QSO B0254+0113 QSO 02 57 15.8115993456 +01 25 40.210752468   19.51 19.24     ~ 8 0
112 QSO B0254-0057 QSO 02 57 16.8626966448 -00 45 36.054623268   19.76 19.78     ~ 26 0
113 QSO B0254-0010 QSO 02 57 25.0829771016 +00 01 14.349587196   19.94 19.79     ~ 28 0
114 QSO B0254+0003 QSO 02 57 27.2534314728 +00 15 45.846656712   20.22 19.95     ~ 28 0
115 PB 6948 QSO 02 57 46.2328214064 -01 19 47.359860600   18.4 17.97     ~ 20 0
116 QSO B0255+001 QSO 02 57 51.5461129008 +00 20 45.532342212   20.05 19.64     ~ 38 0
117 QSO B0255+0152 QSO 02 58 03.8181014280 +02 04 03.836279820   19.59 19.79     ~ 11 0
118 QSO B0255-0022 QSO 02 58 04.2728684616 -00 10 59.989440000   19.94 19.66     ~ 31 0
119 US 3437 QSO 02 58 15.5480381136 -00 03 34.244035308   19.66 19.23     ~ 38 0
120 QSO B0255-0020 QSO 02 58 19.3271936040 -00 08 06.303601716   20.38 20.01     ~ 31 0
121 QSO B0256-0107 QSO 02 58 44.2493493288 -00 55 12.711711360   19.84 19.08     ~ 27 0
122 QSO B0256+0150 Sy1 02 58 47.9443276200 +02 02 04.982143632   19.74 19.30     ~ 15 0
123 QSO B0256+0140 QSO 02 58 49.9207472256 +01 52 25.063487508   19.04 19.01     ~ 12 0
124 LBQS 0256-0000 QSO 02 59 05.6356015320 +00 11 21.964472340   18.50 18.11     ~ 137 0
125 QSO B0256-0003 QSO 02 59 06.8918696544 +00 07 57.676020672   19.65 18.99     ~ 34 0
126 US 3456 Sy1 02 59 10.3878446712 -00 22 39.803249100   18.44 18.22     ~ 54 0
127 US 3461 QSO 02 59 22.6322639928 +00 58 29.494346016   19.04 18.91     ~ 40 0
128 QSO B0256+0146 QSO 02 59 22.6920507864 +01 58 51.073301892   19.69 19.43     ~ 13 0
129 PB 6960 BLL 02 59 28.51615658 -00 19 59.9753897   17.74 17.58 17   ~ 146 1
130 QSO B0257-0020 QSO 02 59 35.8154686776 -00 09 02.804995980   19.53 19.32     ~ 27 0
131 LB 2845 QSO 02 59 37.4641575192 +00 37 36.367307832   16.79 16.72     ~ 80 0
132 QSO B0257+0023B QSO 02 59 57.8559608232 +00 34 54.222920256   19.52 19.32     ~ 30 0
133 PB 6967 QSO 03 00 18.0355956432 +01 28 38.029908684   18.65 19.79     ~ 12 0
134 US 3496 QSO 03 00 25.3645535904 +02 06 15.302440620   18.97 18.94     ~ 11 0
135 US 3499 QSO 03 00 27.1178674944 -00 48 48.887894952   19.50 19.28     ~ 38 0
136 QSO B0257-0007 QSO 03 00 29.8104256464 +00 04 20.976146256   19.61 19.47     ~ 27 0
137 QSO B0257+0031 QSO 03 00 33.9218505528 +00 43 24.750176988   20.01 19.77     ~ 31 0
138 QSO B0258-0027 QSO 03 00 35.9682167616 -00 15 33.022430928   19.28 19.03     ~ 38 0
139 QSO B0258+0020 QSO 03 00 41.7737455920 +00 32 37.576942080   19.47 19.21     ~ 36 0
140 QSO B0258+0005 QSO 03 00 45.2581654344 +00 16 56.729860212   19.26 19.00     ~ 37 0
141 QSO B0258+0009 QSO 03 00 45.4756237056 +00 21 33.095963808   19.90 19.63     ~ 33 0
142 US 3509 QSO 03 00 46.0256922912 +02 22 45.160207716   18.0 17.70     ~ 30 0
143 US 3513 QSO 03 00 48.9405790272 +00 54 40.714823052   18.90 18.77     ~ 43 0
144 US 3514 QSO 03 00 49.8626716008 +01 48 56.347261416   19.90 19.95     ~ 15 0
145 US 3523 QSO 03 01 00.8741678712 +01 49 28.814278440   19.20 19.00     ~ 12 0
146 US 3529 QSO 03 01 29.7351456168 +01 57 38.671885872   19.85 19.25     ~ 10 0
147 QSO B0259+0112 QSO 03 01 37.5786863832 +01 24 41.432578272   19.13 19.22     ~ 9 0
148 PB 6976 QSO 03 01 38.1305974056 +01 38 14.973501192   19.10 19.02     ~ 13 0
149 QSO B0259+0104 QSO 03 01 40.9720647240 +01 15 51.142282200   19.2 19.53     ~ 25 0

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