2008MNRAS.391..967L

Query : 2008MNRAS.391..967L

2008MNRAS.391..967L - Mon. Not. R. Astron. Soc., 391, 967-985 (2008/December-1)

On the relationship between BL Lacertae objects and radio galaxies.

LANDT H. and BIGNALL H.E.

Abstract (from CDS):

We present deep radio images at 1.4 GHz of a large and complete sample of BL Lacertae objects (BL Lacs) selected from the Deep X-ray Radio Blazar Survey (DXRBS). We have observed 24 northern (δ ≳ - 30°) sources with the Very Large Array (VLA) in both its A and C configurations and 15 southern sources with the Australia Telescope Compact Array (ATCA) in its largest configuration. We find that in the DXRBS, as in the 1-Jy survey, which has a radio flux limit roughly 10 times higher than the DXRBS, a considerable number (about a third) of BL Lacs can be identified with the relativistically beamed counterparts of Fanaroff-Riley type II (FR II) radio galaxies. We attribute the existence of FR II-BL Lacs, which is not accounted for by current unified schemes, to an inconsistency in our classification scheme for radio-loud active galactic nuclei. Taking the extended radio power as a suitable measure of intrinsic jet power, we find similar average values for low- (LBL) and high-energy peaked BL Lacs (HBL), contrary to the predictions of the blazar sequence.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

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

Simbad objects: 38

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Number of rows : 38
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 2dFGRS TGS283Z129 BLL 00 32 33.0970812456 -28 49 20.390589480   18.723 18.80 17.242   ~ 52 1
2 LBQS 0040-2655 Bla 00 43 22.7339053152 -26 39 06.138736848   17.34   17.3   ~ 23 1
3 QSO B0048-09 BLL 00 50 41.3172421464 -09 29 05.210474100 16.74 16.39 16.22 16.14   ~ 480 2
4 [VV2000] J010009.0-333730 BLL 01 00 09.39096799 -33 37 31.9378506   20.3   19.4   ~ 30 0
5 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
6 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
7 2MASX J02451349+1047230 BLL 02 45 13.4738487648 +10 47 22.850288988     16.50 12   ~ 24 0
8 2MASX J04285086-3805503 BLL 04 28 50.8440888600 -38 05 50.439578784     18.90 15.6   ~ 13 0
9 PKS J0449-4350 BLL 04 49 24.6981911928 -43 50 08.960970948 14.95 17.52 15.24 16.27   ~ 190 1
10 1RXS J053340.7-463226 BLL 05 33 40.83561 -46 32 15.1748       19.2   ~ 10 1
11 ICRF J054236.1+495107 Sy1 05 42 36.13789710 +49 51 07.2337139   18.45 17.80 17.210   ~ 1573 1
12 PMN J0558-3839 BLL 05 58 06.4316057352 -38 38 31.590709152   17.50 17.1     ~ 93 1
13 2MASX J05581173+5328180 BLL 05 58 11.7979161624 +53 28 17.886566748     14.00 11.1   ~ 24 2
14 PMN J0630-2406 BLL 06 30 59.5217586120 -24 06 46.204083144 16.48 16.22 16.04 16   ~ 97 1
15 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
16 QSO B0836+182 BLL 08 39 30.7211930904 +18 02 47.140535040   17.96 17.31     ~ 98 1
17 RX J0916.8+5238 BLL 09 16 51.9350409624 +52 38 28.331223072   19.02 18.10 15   ~ 82 1
18 9C J0940+2603 BLL 09 40 14.72278286 +26 03 29.9461593   20.32 19.62 19.21   ~ 53 1
19 4C 55.17 Bla 09 57 38.1839604096 +55 22 57.754950636   18.24 17.89     ~ 459 1
20 ICRF J120416.6-071009 BLL 12 04 16.6649997552 -07 10 09.006821616   18.01 18.00 14.6   ~ 84 1
21 PMN J1215+0732 BLL 12 15 10.9765816512 +07 32 04.676330688     16.0 14.8   ~ 114 1
22 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
23 7C 122915.40+290414.00 BLL 12 31 43.5724342752 +28 47 49.770870684   17.90 17.38     ~ 99 2
24 2MASX J13111781-0521201 BLL 13 11 17.8333730904 -05 21 19.956414348     18.70     ~ 13 1
25 [VV98] J132026.8+014037 Bla 13 20 26.79487794 +01 40 36.8115680   21.01 20.28 20.5   ~ 54 1
26 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
27 NVSS J153909-065843 BLL 15 39 09.6684080712 -06 58 43.220227548     20.00 19.6   ~ 15 0
28 7C 181142.79+314318.00 BLL 18 13 35.2028439312 +31 44 17.620234836     17.4 15.2   ~ 116 1
29 SUMSS J183415-594848 BLL 18 34 15.3907843802 -59 48 47.368307583       18.6   ~ 9 1
30 6C 183958+544904 BLL 18 40 57.37670714 +54 52 15.9106743     19.40 19.5   ~ 33 1
31 PMN J1936-4719 BLL 19 36 56.1055840632 -47 19 50.258710776   18.91   17.38   ~ 62 1
32 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2
33 PKS J2009-4849 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 604 1
34 QSO B2136-428 BLL 21 39 24.1733820912 -42 35 20.465859048   16.50 16.2 15.7   ~ 97 1
35 QSO B2150+173 BLL 21 52 24.81939266 +17 34 37.7950210     17.9 17.98   ~ 186 2
36 PMN J2258-5526 BLL 22 58 18.9908859024 -55 25 37.397815356           ~ 61 1
37 MCG-07-47-031 BLL 23 19 05.8954756632 -42 06 48.297034584   16.60 15.46     ~ 121 0
38 ICRF J233035.7-372437 BLL 23 30 35.7956273400 -37 24 37.963132200   18.54 16.60 17.39   ~ 55 1

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