2001MNRAS.325.1109B

Query : 2001MNRAS.325.1109B

2001MNRAS.325.1109B - Mon. Not. R. Astron. Soc., 325, 1109-1123 (2001/August-2)

Intermediate BL Lac objects.

BONDI M., MARCHA M.J.M., DALLACASA D. and STANGHELLINI C.

Abstract (from CDS):

The 200-mJy sample, defined by Marchã et al., contains about 60 nearby, northern, flat-spectrum radio sources. In particular, the sample has proved effective at finding nearby radio-selected BL Lac objects with radio luminosities comparable to those of X-ray-selected objects, and low-luminosity flat-spectrum weak emission-line radio galaxies (WLRGs). The 200-mJy sample contains 23 BL Lac objects (including 6 BL Lac candidates) and 19 WLRGs. We will refer to these subsamples as the 200-mJy BL Lac sample and the 200-mJy WLRG sample, respectively. We have started a systematic analysis of the morphological pc-scale properties of the 200-mJy radio sources using VLBI observations.

This paper presents VLBI observations at 5 and 1.6GHz of 14 BL Lac objects and WLRGs selected from the 200-mJy sample. The pc-scale morphology of these objects is briefly discussed. We derive the radio beaming parameters of the 200-mJy BL Lac objects and WLRGs and compare them with those of other BL Lac samples and with a sample of FR I radio galaxies. The overall broad-band radio, optical and X-ray properties of the 200-mJy BL Lac sample are discussed and compared with those of other BL Lac samples, radio- and X-ray-selected. We find that the 200-mJy BL Lac objects fill the gap between HBL and LBL objects in the colour-colour plot, and have intermediate αXOX as expected in the spectral energy distribution unification scenario. Finally, we briefly discuss the role of the WLRGs.


Abstract Copyright: The Royal Astronomical Society

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

CDS comments: Table 2: 1703+233 misprint for JVAS 1703+223.

Simbad objects: 52

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Number of rows : 52
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 B0016+73 Bla 00 19 45.78637230 +73 27 30.0176020     19.00 18.26   ~ 313 1
2 NVSS J003808+230327 rG 00 38 08.1024 +23 03 28.440           ~ 35 1
3 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
4 7C 0059+5808 Bla 01 02 45.76237340 +58 24 11.1366164   20.09 19.22 18.57 17.90 ~ 262 1
5 QSO B0109+224 BLL 01 12 05.8247044608 +22 44 38.785880796   16.00 15.66 15.47   ~ 373 2
6 Z 502-27 rG 01 19 35.00087601 +32 10 50.0619670   16 14.5     ~ 249 1
7 ICRF J012808.0+490105 Bla 01 28 08.06338971 +49 01 05.9855846     17.2 12.11   ~ 42 1
8 8C 0149+710 BLL 01 53 25.85101910 +71 15 06.4633311     15.50     ~ 105 1
9 RX J0214.2+5144 BLL 02 14 17.9358553848 +51 44 51.945795816       16.5   ~ 133 1
10 7C 065109.30+425147.00 BLL 06 54 43.5253496568 +42 47 58.730753904     17.00 14.9   ~ 48 1
11 Z 204-27 QSO 06 55 10.02472583 +41 00 10.1602339   14.6   9.37   ~ 71 1
12 4C 42.22 BLL 06 56 10.66207584 +42 37 02.7512524   15.0 16.90 11.1   ~ 90 1
13 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
14 NVSS J073328+560541 rG 07 33 28.6148 +56 05 41.730           ~ 32 1
15 Z 286-39 Bla 07 37 30.08694371 +59 41 03.1947899   15.5   11.8   ~ 67 1
16 RX J0809.6+3455 BLL 08 09 38.8872832824 +34 55 37.248843504   18.38 17.42 12.6   ~ 112 1
17 ICRF J083915.8+285038 Sy2 08 39 15.82767313 +28 50 38.8026348   16.0 14.90     ~ 109 1
18 Z 332-26 rG 08 53 18.89689858 +68 28 19.0131937   14.8       ~ 31 1
19 6C 090251+464619 Bla 09 06 15.53979871 +46 36 19.0241852   16.80 16.08     ~ 63 1
20 Ton 397 BLL 09 15 52.4015550384 +29 33 24.042671532   16.79 16.39 16.085   ~ 238 1
21 6C 092554+502611 BLL 09 29 15.4401569832 +50 13 35.990913000   17.18 16.80 15.94   ~ 159 2
22 US 1139 Bla 09 58 19.67164698 +47 25 07.8424065   18.78 18.62 18.39   ~ 264 1
23 RX J1058.6+5628 BLL 10 58 37.7276569824 +56 28 11.207405028   16.80 16.31 14.58   ~ 232 1
24 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
25 4C 20.25 BLL 11 25 58.7421679224 +20 05 54.337332372   18.55 17.96     ~ 59 1
26 Z 334-43 BLL 11 36 26.4090783600 +70 09 27.309071232   15.16 14.49 10.51   ~ 394 1
27 Z 186-48 BLL 11 47 22.1297825184 +35 01 07.538786184   17.89 16.83 10.26   ~ 184 1
28 NGC 3894 Bla 11 48 50.35817663 +59 24 56.3822416   12.9   11.57   ~ 268 1
29 7C 1147+2434 BLL 11 50 19.21218244 +24 17 53.8352318   16.26 15.74 15.80   ~ 294 1
30 Ton 605 HB* 12 16 53.6748432768 +30 04 08.692883544   16.110 15.98     B 223 0
31 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
32 NGC 4283 GiG 12 20 20.7691223880 +29 18 39.154727556 13.47 13.00 12.07     ~ 209 1
33 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
34 NVSS J124310+731600 rG 12 43 11.21710248 +73 15 59.2498613           ~ 35 1
35 ICRF J124733.3+672316 Bla 12 47 33.32959326 +67 23 16.4488689           ~ 100 2
36 LB 2449 BLL 12 48 18.7847605224 +58 20 28.717260720   16.10 15.78 15.19   ~ 215 1
37 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
38 PG 1424+240 BLL 14 27 00.3917926224 +23 48 00.037510776 14.52 14.34 14.95 14.5   ~ 420 1
39 4C 23.42 Sy2 15 53 43.5914760192 +23 48 25.450188912     17.0     ~ 58 1
40 MCG+10-23-012 QSO 15 59 01.7039 +59 24 21.841   16       ~ 48 1
41 7C 164526.30+291456.00 BLL 16 47 26.8766288160 +29 09 49.574194524   16.5   13.4   ~ 24 1
42 7C 164616.60+495503.00 BLL 16 47 34.9117576933 +49 50 00.584303604     17 12.47   ~ 119 1
43 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
44 4C 30.31 rG 17 00 45.2320367856 +30 08 12.874902000   15.00 14.3     ~ 76 0
45 2MASX J17052935+2216075 Sy2 17 05 29.3298316080 +22 16 07.585741884           ~ 32 1
46 4C 51.37 Bla 17 40 36.97784792 +52 11 43.4073694   18.16 18.70 16.73   ~ 441 1
47 NGC 6521 Bla 17 55 48.4316054256 +62 36 44.129200428   14.3   9.3   ~ 75 1
48 Z 340-35 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 909 1
49 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 699 2
50 ICRF J220421.1+363237 QSO 22 04 21.10050784 +36 32 37.0908847       12.88   ~ 33 1
51 Z 454-57 rG 23 23 20.3442252816 +20 35 23.535199932   15.5 15.5     ~ 47 1
52 QSO B2344+514 BLL 23 47 04.8372110928 +51 42 17.877513168     15.50 10.7   ~ 500 1

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