2013A&A...560A..23L


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.23CEST05:55:54

2013A&A...560A..23L - Astronomy and Astrophysics, volume 560A, 23-23 (2013/12-1)

Exploring the bulk of the BL Lacertae object population. I. Parsec-scale radio structures.

LIUZZO E., GIROLETTI M., GIOVANNINI G., BOCCARDI B., TAMBURRI S., TAYLOR G.B., CASADIO C., KADLER M., TOSTI G. and MIGNANO A.

Abstract (from CDS):

The advent of Fermi is changing our understanding on the radio and γ-ray emission in active galactic nuclei. Unlike pre-Fermi ideas, BL Lac objects are found to be the most abundant emitters in the γ-ray band. However, since they are relatively weak radio sources, most of their parsec-scale structure and their multifrequency properties are poorly understood and/or have not been investigated in a systematic fashion. Our main goal is to analyze the radio and γ-ray emission properties of a sample of 42 BL Lacs selected, for the first time in the literature, with no constraint on their radio and γ-ray emission. Thanks to new Very Long Baseline Array observations at 8 and 15GHz for the whole sample, we present fundamental parameters here such as radio flux densities, spectral index information, and parsec-scale structure. Moreover, we search for γ-ray counterparts using data reported in the Second Catalog of Fermi Gamma-ray sources. Parsec-scale radio emission is observed in the majority of the sources at both frequencies. Gamma-ray counterparts are found for 14/42 sources. The comparison between our results in radio and gamma-ray bands points out the presence of a large number of faint BL Lacs showing ``non-classical'' properties such as low source compactness, core dominance, no gamma-ray emission, and steep radio spectral indexes. A deeper multiwavelength analysis will be needed.

Abstract Copyright:

Journal keyword(s): radio continuum: galaxies - galaxies: active - galaxies: jets

VizieR on-line data: <Available at CDS (J/A+A/560/A23): list.dat maps/*>

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 - 2019
#notes
1 ICRF J074640.4+273459 QSO 07 46 40.43230698 +27 34 59.0473025       21.14   ~ 25 1
2 FIRST J075109.5+291335 BLL 07 51 09.581 +29 13 35.59       16.9   ~ 6 0
3 2MASS J07512509+1730509 BLL 07 51 25.101 +17 30 51.18     18.2 18.2   ~ 24 0
4 2MASS J07532462+2921319 BLL 07 53 24.624 +29 21 31.94       15.7   ~ 15 0
5 2MASX J07543702+3910477 BLL 07 54 37.0687668054 +39 10 47.773565348   18.43 17.56 12.8   ~ 26 0
6 7C 080458.39+495918.00 QSO 08 08 39.66628353 +49 50 36.5304035   19.55 19.18 18.34   ~ 316 2
7 7C 080625.30+350445.00 BLL 08 09 38.8884303300 +34 55 37.233342231   18.38 17.42 12.6   ~ 75 1
8 7C 080602.89+522749.00 BLL 08 09 49.1866520010 +52 18 58.249265842   16.11 15.59 14.6   ~ 219 2
9 2MASXI J0810546+491103 BLL 08 10 54.5969456075 +49 11 03.820079194     17.00 13.5   ~ 18 0
10 3FHL J0847.2+1134 BLL 08 47 12.9308473717 +11 33 50.150132659     16.90 16.6   ~ 75 0
11 4C 37.25 QSO 08 50 24.72978591 +37 47 09.4777059   21.08 20.36     ~ 67 2
12 2MASX J08503620+3455231 BLL 08 50 36.1965466566 +34 55 22.775134572   18.73 17.85 14.3   ~ 43 0
13 ICRF J085128.4+084515 Bz? 08 51 28.42549857 +08 45 15.3120175       22.90   ~ 11 0
14 2MASS J09031470+4055597 BLL 09 03 14.7088007961 +40 55 59.850237980   19.53 18.60     ~ 26 0
15 4C 42.28 QSO 09 04 15.62848948 +42 38 04.7646282   19.9 19.9     ~ 45 1
16 6C 091313+525115 BLL 09 16 51.9356042953 +52 38 28.342414318   19.02 18.10 15   ~ 46 1
17 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 920 1
18 QSO B0927+500 BLL 09 30 37.5735588922 +49 50 25.548877370   18.81 18.25 17.3   ~ 89 1
19 ICRF J093712.3+500852 Sy1 09 37 12.3273081876 +50 08 52.099994720   19.51 18.94 18.88   ~ 97 1
20 Mrk 412 G 09 57 59.676 +32 14 22.90   15.5 14.13     ~ 32 0
21 2MASS J10125836+3932389 BLL 10 12 58.3425072874 +39 32 38.857128331   19.65 18.63     ~ 18 1
22 2MASS J10221261+5124003 BLL 10 22 12.6059883104 +51 24 00.257213534     18.09     ~ 45 0
23 7C 102014.59+400329.00 QSO 10 23 11.56566179 +39 48 15.3854217   17.5 17.5 17.18   ~ 121 1
24 7C 105047.29+494553.00 BLL 10 53 44.1260802583 +49 29 56.000502267   18.70 17.76 13.8   ~ 99 2
25 7C 1055+5644 BLL 10 58 37.7276722520 +56 28 11.207685679   16.80 16.31 14.58   ~ 165 2
26 Mrk 421 BLL 11 04 27.3139210166 +38 12 31.798324828   13.50 12.90 8.31   ~ 2325 1
27 87GB 111803.1+422817 BLL 11 20 48.0622899025 +42 12 12.469811109   17.55 17.11 16.9   ~ 95 1
28 6C 112412+453344 QSO 11 26 57.6550073430 +45 16 06.287264845   17.66 17.51 17.01   ~ 64 1
29 [VV2006] J113624.5-033029 QSO 11 36 24.57693290 -03 30 29.4964694   19.81 19.47 18.7   ~ 36 1
30 2MASX J11363009+6737042 BLL 11 36 30.0875034764 +67 37 04.351529867   18.19 17.45 15.3   ~ 106 1
31 7C 114056.70+665017.00 QSO 11 43 41.6025124208 +66 33 31.229374513   19.82 19.50 19.25   ~ 40 1
32 2MASS J11453511-0340013 BLL 11 45 35.1089980825 -03 40 01.597864374   19.76 18.56     ~ 32 1
33 6C 114419+401458 QSO 11 46 58.29791629 +39 58 34.3045026   18.80 18.45 18.58   ~ 165 1
34 2MASS J11564655+4238074 BLL 11 56 46.5620893923 +42 38 07.508032933     17.70 15.6   ~ 24 0
35 2MASS J12010619-0007016 BLL 12 01 06.1934110362 -00 07 01.541631518   19.68 18.54     ~ 24 0
36 QSO B1158+007 QSO 12 01 23.2513674565 +00 28 28.312365809   19.41 18.99     ~ 47 1
37 MGC 27928 BLL 12 01 43.663 -00 11 14.00   19.28   16.7   ~ 10 0
38 QSO B1212+078 BLL 12 15 10.9769954937 +07 32 04.674253273     16.0 14.8   ~ 75 1
39 6C 121520+302351 BLL 12 17 52.0819140772 +30 07 00.636792927   16.07 15.62 13.47   ~ 392 1
40 QSO B1218+304 BLL 12 21 21.9427463316 +30 10 37.161573795   16.50 15.85 15.7   ~ 377 1
41 7C 1219+2830 BLL 12 21 31.6902446545 +28 13 58.500383827   16.81 16.11 14.24   ~ 763 1
42 2MASS J12213208+0821440 BLL 12 21 32.0677997773 +08 21 44.195780261     17.10     ~ 17 1
43 4C 04.42 QSO 12 22 22.54962080 +04 13 15.7761797   17.88 17.98 17.06   ~ 236 1
44 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6003 3
45 QSO B1229+6430 BLL 12 31 31.3953946380 +64 14 18.288194641   18.36 17.62 14.3   ~ 121 2
46 2MASX J12534701+0326299 BLL 12 53 47.0061091277 +03 26 30.435507818   17.20 16.39     ~ 52 1
47 QSO B1255+244 BLL 12 57 31.9330234281 +24 12 40.168674935     15.4 15.7   ~ 69 0
48 [VV2006] J132111.2+221613 QSO 13 21 11.2021889975 +22 16 12.112556136   19.59 19.23 19.37   ~ 70 1
49 7C 1338+4015 BLL 13 41 05.1074299555 +39 59 45.420101099   18.93 18.24 14.9   ~ 60 2
50 ICRF J135938.0+401138 QSO 13 59 38.0948723734 +40 11 38.251469061     19.2 17.00   ~ 44 1
51 6C 141804+543700 BLL 14 19 46.5976435439 +54 23 14.787308481   16.17 15.65 14.16   ~ 528 1
52 7C 141743.00+383533.00 QSO 14 19 46.61376070 +38 21 48.4750925   19.88 19.66 19.25   ~ 125 1
53 2MASX J14273023+5409238 BLL 14 27 30.2793877290 +54 09 23.718609049     17.40     ~ 34 1
54 2MASS J14274594+3908323 BLL 14 27 45.8981385572 +39 08 32.129414897   20.24 19.24     ~ 11 0
55 QSO B1426+428 BLL 14 28 32.6090831425 +42 40 21.050020627   16.95 16.45 14.4   ~ 446 2
56 6C 142744+541929 QSO 14 29 21.87878876 +54 06 11.1229539   20.73 20.39 20.5   ~ 61 1
57 2FGL J1437.1+5640 BLL 14 36 57.7194473147 +56 39 24.859177812   18.92 18.51 17.6   ~ 55 0
58 QSO B1440+122 BLL 14 42 48.276582 +12 00 40.37487   18.34 17.63 15.2   ~ 133 3
59 2XMM J151041.0+333505 BLL 15 10 41.1200749926 +33 35 04.745895987   18.6 17.70 15.1   ~ 29 0
60 87GB 151434.8+292943 BLL 15 16 41.5924816516 +29 18 09.188824006     18.20 14.6   ~ 35 1
61 7C 1520+3154 QSO 15 22 09.99172973 +31 44 14.3819060   20.45 19.89 19.87   ~ 125 1
62 2MASX J15344723+3715546 BLL 15 34 47.2080100645 +37 15 54.617115457   18.26 17.57     ~ 60 1
63 2MASS J16044651+3345216 BLL 16 04 46.5241527386 +33 45 21.828365086   18.3   18   ~ 10 0
64 6C 161147+342017 QSO 16 13 41.0645258703 +34 12 47.911898732   17.98 17.46 17.07   ~ 574 1
65 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1529 2
66 7C 164526.30+291456.00 BLL 16 47 26.8767628232 +29 09 49.579951468   16.5   13.4   ~ 15 1
67 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1870 2

    Equat.    Gal    SGal    Ecl

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2019.09.23-05:55:54

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