2010ApJ...712...14M


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST11:52:39

2010ApJ...712...14M - Astrophys. J., 712, 14-25 (2010/March-3)

Imaging redshift estimates for BL Lacertae objects.

MEISNER A.M. and ROMANI R.W.

Abstract (from CDS):

We have obtained high dynamic range, good natural seeing i' images of BL Lacertae objects (BL Lacs) to search for the active galactic nucleus host and thus constrain the source redshift. These objects are drawn from a sample of bright flat-spectrum radio sources that are either known (via recent Fermi Large Area Telescope observations) gamma-ray emitters or similar sources that might be detected in continuing gamma-ray observations. All had spectroscopic confirmation as BL Lac sources, but no redshift solution. We detected hosts for 25/49 objects. As these galaxies have been argued to be standard candles, our measured host magnitudes provide redshift estimates (ranging from 0.2 to 1.0). Lower bounds are established on the redshifts of non-detections. The mean of the fit redshifts (and lower limits) is higher than those of spectroscopic solutions in the radio-loud and gamma-ray-loud parent samples, suggesting corrections may be needed for the luminosity function and evolution of these sources.

Abstract Copyright:

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

Simbad objects: 49

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Number of rows : 49

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ICRF J000404.9-114858 BLL 00 04 04.91499899 -11 48 58.3857370       19.09   ~ 34 1
2 QSO J0049+0237 BLL 00 49 43.2359101555 +02 37 03.776571737 19.56 19.23 19.14 19.07   ~ 75 1
3 QSO B0048-09 BLL 00 50 41.31738756 -09 29 05.2102688 16.74 16.39 16.22 16.14   ~ 427 2
4 4C 67.04 BLL 01 10 12.8734594 +68 05 41.216906           ~ 48 1
5 ICRF J020243.6+420516 BLL 02 02 43.6532978 +42 05 16.332961       18.80   ~ 27 1
6 6C 015907+721900 BLL 02 03 33.38496841 +72 32 53.6672938     19.2 15.90   ~ 78 1
7 ICRF J021113.1+105134 BLL 02 11 13.1774096100 +10 51 34.799014683 13.96 13.63 13.40 15.42   ~ 98 1
8 ICRF J021921.1-184238 BLL 02 19 21.1617714 -18 42 38.747569   19.5   18.30   ~ 38 1
9 ICRF J024330.8+712017 BLL 02 43 30.8921190353 +71 20 17.903856421     19.4 18.4   ~ 52 0
10 ICRF J034839.2-161017 BLL 03 48 39.2709837293 -16 10 17.755497037   18.32   16.02   ~ 51 1
11 QSO B0430+2859 BLL 04 33 37.82985993 +29 05 55.4770346   19.0 17.80 17.06   ~ 132 1
12 QSO B0459+135 BLL 05 02 33.2195230 +13 38 10.958704   20.0 20.5 19.22   ~ 48 0
13 QSO J0509+0541 BLL 05 09 25.9645434784 +05 41 35.333636817 15.32 14.95 14.78 15.12   ~ 267 2
14 QSO J0527+0331 BLL 05 27 32.70544796 +03 31 31.5166429     20.00 18.43   ~ 54 1
15 7C 060336.10+474014.00 BLL 06 07 23.2549900570 +47 39 46.942743708       16.38   ~ 57 1
16 2FGL J0609.6-1847 Bla 06 10 17.8857694839 -18 47 40.082408589       17.29   ~ 35 0
17 ICRF J061251.1+412237 BLL 06 12 51.1849798434 +41 22 37.403278672       15.71   ~ 61 0
18 ICRF J062518.2+444001 BLL 06 25 18.2651888885 +44 40 01.625648996     16.80 18.71   ~ 79 1
19 QSO B0647+250 BLL 06 50 46.4902391458 +25 02 59.623980609 16.17 15.97 15.79 16.3   ~ 118 2
20 ICRF J071243.6+503322 BLL 07 12 43.6836553279 +50 33 22.707945550       18.68   ~ 72 1
21 ICRF J074305.1+171424 BLL 07 43 05.1066617878 +17 14 24.411648009   18.89 18.32 19.12   ~ 22 0
22 7C 081008.69+644025.00 BLL 08 14 39.1903778358 +64 31 22.027488500       16.81   ~ 57 1
23 ICRF J081749.7-093330 BLL 08 17 49.7497306244 -09 33 30.518607816 18.38 17.96 17.61 17.51   ~ 55 1
24 2MASS J08354322+0937177 BLL 08 35 43.2125619378 +09 37 17.979460872       18.1   ~ 27 1
25 ICRF J090754.0-202649 Bz? 09 07 54.0404481 -20 26 49.474822       15.29   ~ 24 1
26 ICRF J090939.8+020005 BLL 09 09 39.8485694077 +02 00 05.257599500   20.23 19.68 18.62   ~ 57 1
27 Ton 397 BLL 09 15 52.4018373869 +29 33 24.041406916   16.79 16.39 16.085   ~ 199 1
28 2FGL J0953.1-0839 BLL 09 53 02.7096407675 -08 40 18.364545620 16.99 16.73 16.69 17.4   ~ 59 0
29 QSO J1008+0621 BLL 10 08 00.8161585 +06 21 21.216137 17.61 17.17 17.85 16.73   ~ 88 1
30 87GB 103431.3+572750 BLL 10 37 44.3078863654 +57 11 55.629763116   17.05 16.54 16.7   ~ 96 1
31 QSO B1056-112 BLL 10 59 12.4264637317 -11 34 22.781843636     17.5 16.2   ~ 60 0
32 Ton 116 BLL 12 43 12.7360876322 +36 27 43.998968007   17.41 17.11 16.4   ~ 84 1
33 6C 125058+531749 BLL 12 53 11.9205021198 +53 01 11.736128183   18.07 17.51 16.4   ~ 100 1
34 7C 1424+2401 BLL 14 27 00.3918388878 +23 48 00.035406946 14.52 14.34 14.95 14.5   ~ 301 1
35 2MASS J14405293+0610162 BLL 14 40 52.9390666258 +06 10 16.191656014 17.77 17.41 17.34     ~ 49 1
36 QSO B1542+614 BLL 15 42 56.9436911925 +61 29 55.347789879   16.9 16.25 16.6   ~ 106 1
37 7C 162332.79+565907.00 BLL 16 24 32.1795945800 +56 52 28.004153087   18.76 18.13 17.82   ~ 33 1
38 ICRF J174900.3+432151 BLL 17 49 00.3603781 +43 21 51.287483     18.21 19.84   ~ 81 1
39 ICRF J181333.4+061542 BLL 18 13 33.4119477629 +06 15 42.031769883       17.48   ~ 46 1
40 ICRF J190311.6+554038 BLL 19 03 11.6079210800 +55 40 38.452291005   18.1   16.4   ~ 76 1
41 6C 192647+611105 BLL 19 27 30.4437056728 +61 17 32.874367712   17.5 17.5 16.99   ~ 102 1
42 4C 72.28 BLL 20 09 52.3045342424 +72 29 19.346280867   19.0   19.40   ~ 91 1
43 ICRF J202235.5+761126 BLL 20 22 35.5758679021 +76 11 26.174404015     18.10 17.54   ~ 76 1
44 QSO B2047+03 BLL 20 50 06.2403049172 +04 07 48.887482656   19.8   19.00   ~ 76 1
45 ICRF J220014.1+213757 BLL 22 00 14.1971550225 +21 37 57.040346609       19.04   ~ 23 1
46 ICRF J224107.2+412011 BLL 22 41 07.2052849849 +41 20 11.613538488       18.89   ~ 41 1
47 87GB 224130.7+200514 BLL 22 43 54.7434952027 +20 21 03.773522952     16.00 16.1   ~ 78 0
48 ICRF J230517.5+824249 BLL 23 05 17.5396977 +82 42 49.155239       20.47   ~ 19 0
49 2MASS J23462556+8007552 BLL 23 46 25.6106394613 +80 07 55.236862182       19.51   ~ 19 1

    Equat.    Gal    SGal    Ecl

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2021.04.18-11:52:39

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