2003AJ....125.1784H

Query : 2003AJ....125.1784H

2003AJ....125.1784H - Astron. J., 125, 1784-1794 (2003/April-0)

The frequency and radio properties of broad absorption quasars.

HEWETT P.C. and FOLTZ C.B.

Abstract (from CDS):

A sample of 67 broad absorption line quasars (BALQSOs) from the Large Bright Quasar Survey (LBQS) is used to estimate the observed and intrinsic fraction of BAL quasars in optically selected samples at intermediate (B_J_≃18.5) magnitudes. The observed BALQSO fraction in the redshift range 1.5≤z≤3.0 is 15%±3%. A well-determined empirical k-correction, to allow for the differences in the spectral energy distributions of non-BALQSOs and BALQSOs shortward of ≃2100 Å in the rest frame, is applied to the sample. The result is an estimate of the intrinsic fraction of BALQSOs of 22%±4% for the redshift range 1.5≤z≤3.0. This value is twice that commonly cited for the occurrence of BALQSOs in optically selected samples, and the figure is in reasonable agreement with that from a preliminary analysis of the SDSS Early Data Release. The fraction of BALQSOs predicted to be present in an optical survey with flux limits equivalent to that of the FIRST Bright Quasar Survey (FBQS) is shown to be ≃20%. The BALQSO fractions derived from the FBQS and the LBQS suggest that optically bright BALQSOs are half as likely as non-BALQSOs to be detectable as S1.4GHz≳1 mJy radio sources.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Quasars: Absorption Lines - Galaxies: Quasars: General - Radio Continuum - Surveys

CDS comments: In table 4 : LBQS 0059-0205 is a misprint for LBQS 0059-0206, LBQS 1138-0216 is a misprint for LBQS 1138-0126

Simbad objects: 67

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Number of rows : 67
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 LBQS 2358+0216 QSO 00 01 21.6845637720 +02 33 04.948147224     18.6     ~ 20 0
2 LBQS 0004+0147 QSO 00 07 22.5182889144 +02 04 12.907030296   18.27 17.67     ~ 27 0
3 LBQS 0009+0219 QSO 00 12 19.6349228520 +02 36 36.299600244   18.36 17.96     ~ 21 0
4 LBQS 0018+0047 QSO 00 21 27.8877223104 +01 04 20.275548492   18.64 18.50     ~ 72 0
5 PB 5901 QSO 00 22 27.4798833168 +01 24 12.564927324   17 18.9     ~ 80 0
6 LBQS 0020-0154 QSO 00 23 02.3368278648 -01 38 16.259985384   18 18.3     ~ 21 0
7 LBQS 0021-0213 QSO 00 24 10.8946824312 -01 56 46.879465092     18.7     ~ 34 0
8 LBQS 0022+0150 QSO 00 24 35.3658502344 +02 06 48.396427884   18 17.529     ~ 22 0
9 LBQS 0025-0151 QSO 00 27 33.8146968576 -01 34 52.434665364   18 18     ~ 39 0
10 LBQS 0029+0017 QSO 00 31 35.5729847640 +00 34 21.268298424     18     ~ 83 0
11 LBQS 0045-2606 QSO 00 48 12.5346414672 -25 50 03.882579540   18.08       ~ 16 0
12 LBQS 0049-0123 QSO 00 51 35.2882007064 -01 07 09.181829820   18.32 18.10     ~ 41 0
13 LBQS 0049-2535 QSO 00 52 11.0446201128 -25 18 57.953127204     19.2     ~ 17 0
14 LBQS 0051-0019 QSO 00 53 55.1600874096 -00 03 09.345187476   18.87 18.55     ~ 59 0
15 LBQS 0054+0200 QSO 00 56 44.6371581504 +02 16 30.247451652     18.4     ~ 25 0
16 LBQS 0059-0206 QSO 01 02 05.5971709440 -01 50 38.105594088     18.0     ~ 21 0
17 LBQS 0059-2735 QSO 01 02 17.0407393968 -27 19 49.976679540   18.0       ~ 95 0
18 LB 79 QSO 01 05 34.7274469336 -27 36 57.919235262   18.0   17.7   ~ 46 0
19 LBQS 0106-0113 QSO 01 08 55.0256437944 -00 57 47.177901936   17.6 18.00 18.0   ~ 43 0
20 LBQS 0109-0128 QSO 01 12 27.6059783400 -01 12 21.714645744   18.63 18.37     ~ 64 0
21 LBQS 1009+0222 QSO 10 11 48.9768893040 +02 07 32.064982860   18.49 18.17     ~ 38 0
22 LBQS 1016-0248 QSO 10 19 00.8745292320 -03 03 49.747456584   18.49 18.20     ~ 15 0
23 LBQS 1029-0125 QSO 10 31 49.5211442976 -01 41 11.277813984     18.4     ~ 29 0
24 LBQS 1133+0214 QSO 11 36 31.8732075504 +01 58 01.047101232   18.34 18.07     ~ 38 0
25 LBQS 1136-0109 QSO 11 39 04.3379561376 -01 26 25.087357896   19.45 19.07     ~ 29 0
26 LBQS 1138-0126 QSO 11 41 11.6165271504 -01 43 06.656160756   18.37 17.98     ~ 64 1
27 LBQS 1203+1703 QSO 12 06 20.1428126088 +16 46 38.434173600     18.6     ~ 25 0
28 LBQS 1203+1530 QSO 12 06 26.1762594216 +15 13 35.609106900   18.92 18.57     ~ 37 0
29 LBQS 1205+1436 QSO 12 08 25.3793405568 +14 19 21.088375248     18.5     ~ 42 0
30 LBQS 1208+1535 QSO 12 11 25.4861849808 +15 18 51.488880660     18.0     ~ 56 0
31 LBQS 1212+1445 QSO 12 14 40.2739153080 +14 28 59.288879460     17.9     ~ 65 0
32 LBQS 1214+1753 BLL 12 16 56.8563055896 +17 37 13.765406736   18.14 17.74     ~ 20 0
33 LBQS 1216+1103 QSO 12 19 30.9566894544 +10 47 00.092224932   18.44 18.22     ~ 49 0
34 LB 4374 QSO 12 22 21.7464199704 +12 28 19.667963244   19.03 18.70     ~ 34 1
35 A3 166 QSO 12 26 35.5769657448 +13 32 52.202317308   18.28 17.93     ~ 15 0
36 RMB 131 QSO 12 31 16.4079863760 +12 00 23.843667924   17.85 17.57     ~ 52 0
37 LBQS 1230+1705 QSO 12 33 10.6553338320 +16 49 05.527494336     18.4     ~ 32 0
38 LBQS 1231+1320 QSO 12 33 55.5976605936 +13 04 09.188935572   18.84 18.7     ~ 30 0
39 LBQS 1234+0122 QSO 12 37 24.5229784920 +01 06 15.529913244   18.32 18.10     ~ 46 0
40 LBQS 1235+1453 QSO 12 37 36.4227516888 +14 36 40.130179236     19.0     ~ 57 0
41 LBQS 1235+0857 QSO 12 37 54.8223203520 +08 41 06.765457956     18.2     ~ 47 0
42 LBQS 1235+0216 QSO 12 38 12.9954536664 +02 00 19.961358012   18.18 17.94     ~ 12 0
43 LBQS 1235+1807 QSO 12 38 20.1930711864 +17 50 39.153641100   16.829 16.599     ~ 57 0
44 LBQS 1236+0128 QSO 12 39 11.4974653248 +01 12 13.958607636   18.06 17.78     ~ 35 0
45 LBQS 1239+0955 QSO 12 41 35.8895616288 +09 39 31.178375208     18.4     ~ 29 0
46 LBQS 1239-0231 QSO 12 41 57.3275784336 -02 47 31.387351056   17.69 17.40     ~ 32 0
47 LBQS 1239+0028 QSO 12 42 02.6498064048 +00 12 29.112016968   16.8 17.31 16.9   ~ 45 0
48 LBQS 1240+1607 QSO 12 43 03.6550963704 +15 50 47.458412160     18.8     ~ 28 0
49 LBQS 1243+0121 QSO 12 45 51.4514622408 +01 05 05.025409332   18.43 18.26     ~ 64 0
50 LBQS 1314+0116 QSO 13 17 14.2192840512 +01 00 13.029343632   18.79 18.51     ~ 66 0
51 LBQS 1326-0249 QSO 13 28 50.0068439400 -03 04 50.581849692   19.36 19.12     ~ 30 0
52 LBQS 1331-0108 QSO 13 34 28.0613578464 -01 23 49.042287744   18.61 17.97     ~ 73 0
53 LBQS 1429-0036 QSO 14 31 43.8057390408 -00 50 11.486136912   18.53 18.23     ~ 51 0
54 LBQS 1442-0011 QSO 14 45 14.8687831224 -00 23 58.163029656     18.2     ~ 42 0
55 LBQS 1443+0141 QSO 14 45 45.3108478584 +01 29 13.453061676     18.2     ~ 41 0
56 LBQS 2111-4335 QSO 21 15 06.9116 -43 23 10.791   17.6 16.7     ~ 20 0
57 LBQS 2116-4439 QSO 21 20 11.6761929792 -44 26 53.548555308   18.22 17.74     ~ 22 0
58 LBQS 2140-4552 QSO 21 43 28.9329924552 -45 38 50.973532728   18.68 18.06     ~ 17 0
59 LBQS 2154-2005 QSO 21 57 05.9237012016 -19 51 13.586648940     18.3     ~ 30 0
60 LBQS 2201-1834 QSO 22 04 01.5546372792 -18 19 41.612322612   18.38       ~ 27 0
61 LBQS 2208-1720 QSO 22 11 15.4729170096 -17 05 24.967118184     17.6     ~ 13 0
62 LBQS 2210-1751 QSO 22 13 09.6703011648 -17 37 01.151694012   17.6 17.9 17.3   ~ 12 0
63 LBQS 2211-1915 BLL 22 14 37.8807173910 -19 00 57.134588568     18.20     ~ 26 1
64 LBQS 2212-1759 QSO 22 15 31.6804696392 -17 44 08.249216928     18.3     ~ 58 0
65 LBQS 2239+0007 QSO 22 41 47.3467686576 +00 22 54.682658688   18.72 18.42     ~ 35 0
66 LBQS 2241+0016 QSO 22 44 31.5107784216 +00 32 26.051604540   18.46 18.07     ~ 40 0
67 LBQS 2350-0045A QSO 23 52 53.5177514496 -00 28 50.433172356   18.73 18.41     ~ 86 0

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