2013MNRAS.430.2464M

Query : 2013MNRAS.430.2464M

2013MNRAS.430.2464M - Mon. Not. R. Astron. Soc., 430, 2464-2475 (2013/April-2)

The CLASS BL Lac sample: the radio luminosity function.

MARCHA M.J.M. and CACCIANIGA A.

Abstract (from CDS):

This paper presents a new sample of BL Lac objects selected from a deep (30 mJy) radio survey of flat spectrum radio sources (the CLASS blazar survey). The sample is one of the largest well-defined samples in the low-power regime with a total of 130 sources of which 55 satisfy the `classical' optical BL Lac selection criteria, and the rest have indistinguishable radio properties. The primary goal of this study is to establish the radio luminosity function (RLF) on firm statistical ground at low radio luminosities where previous samples have not been able to investigate. The gain of taking a peek at lower powers is the possibility to search for the flattening of the luminosity function which is a feature predicted by the beaming model but which has remained elusive to observational confirmation. In this study, we extend for the first time the BL Lac RLF down to very low radio powers ∼ 1022 W/Hz, i.e. two orders of magnitude below the RLF currently available in the literature. In the process, we confirm the importance of adopting a broader, and more physically meaningful set of classification criteria to avoid the systematic missing of low-luminosity BL Lacs. Thanks to the good statistics we confirm the existence of weak but significant positive cosmological evolution for the BL Lac population, and we detect, for the first time the flattening of the RLF at L ∼ 1025 W/Hz in agreement with the predictions of the beaming model.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: active - BL Lacertae objects: general - galaxies: luminosity function, mass function

VizieR on-line data: <Available at CDS (J/MNRAS/430/2464): tablea1.dat>

Simbad objects: 125

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Number of rows : 125
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 87GB 013336.4+385101 BLL 01 36 32.5983798936 +39 05 59.199517428     15.80 15.5   ~ 127 1
2 MCG+07-05-032 Bla 02 16 24.5175 +40 00 35.815   16       ~ 16 1
3 UGC 2366 Bla 02 54 00.0458 +36 25 51.888   15.7       ~ 20 1
4 2MASX J06564751+5603100 Bla 06 56 47.5256066544 +56 03 09.642575700           ~ 8 1
5 2MASX J07064938+5923150 Bla 07 06 49.3849 +59 23 14.948           ~ 5 1
6 NGC 2332 Bla 07 09 34.1575 +50 10 56.213   14.0   8.2   ~ 52 1
7 2MASX J07150996+4525556 Bla 07 15 09.9220 +45 25 55.952           ~ 10 1
8 87GB 071706.7+371227 Bla 07 20 28.7762 +37 06 47.332           ~ 4 1
9 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1298 1
10 7C 073012.09+352219.00 BLL 07 33 29.5804182336 +35 15 42.720710040     17.90 16.4   ~ 24 1
11 2MASX J07393481+4954389 Bla 07 39 34.8493 +49 54 38.773           ~ 10 1
12 ICRF J080625.9+593106 BLL 08 06 25.9488552792 +59 31 06.910219092   17.16 16.72 15.7   ~ 58 1
13 7C 080602.89+522749.00 BLL 08 09 49.1868285744 +52 18 58.249938744   16.11 15.59 14.6   ~ 277 2
14 6C 081218+574825 BLL 08 16 22.7274374136 +57 39 09.136267128   17.99 17.37 16.8   ~ 75 1
15 2MASX J08310034+5400235 BLL 08 31 00.3630 +54 00 23.222       13.5   ~ 23 1
16 LEDA 2275964 Sy2 08 31 39.8039 +46 08 00.775   18.94 18.07 13.6   ~ 33 0
17 87GB 083013.0+581348 Bla 08 34 11.1012882048 +58 03 21.404149128           ~ 25 1
18 2MASX J08390306+4015457 BLL 08 39 03.0835285944 +40 15 45.596941128       15.3   ~ 14 1
19 6C 084650+404757 BLL 08 50 04.6474 +40 36 07.850           ~ 19 1
20 2MASX J09053640+4705462 BLL 09 05 36.4463296848 +47 05 46.348420992       15.5   ~ 14 1
21 ICRF J090615.5+463619 Sy2 09 06 15.53979871 +46 36 19.0241852   16.80 16.08     ~ 54 1
22 MCG+07-19-027 Bla 09 06 52.7975 +41 24 29.614   15.1       ~ 51 1
23 MCG+08-17-034 Bla 09 07 56.3294 +49 35 48.198   15.0       ~ 26 1
24 6C 092554+502611 BLL 09 29 15.4401569832 +50 13 35.990913000   17.18 16.80 15.94   ~ 143 2
25 87GB 093255.8+724421 Bla 09 37 32.0802594672 +72 30 56.154638160           ~ 3 1
26 NGC 2965 Sy2 09 43 19.15347161 +36 14 52.0723746   17.17 16.38 8.87   ~ 80 1
27 6C 094211+581115 BLL 09 45 42.2361310488 +57 57 47.697286104   19.37 18.04 15.4   ~ 78 1
28 7C 094244.20+463305.00 BLL 09 45 57.1851889584 +46 19 19.650099072           ~ 8 1
29 2MASX J09483203+5535348 BLL 09 48 32.0117764176 +55 35 35.261842020       14.1   ~ 19 1
30 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 711 1
31 2MASX J10071041+5023565 BLL 10 07 10.4503116744 +50 23 56.564981232       15.4   ~ 10 1
32 6C 100945+424532 BLL 10 12 44.3054821248 +42 29 57.094313532   19.01 18.43     ~ 86 1
33 6C 101157+494057 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 370 3
34 6C 101527+592745 BLL 10 18 58.5399381264 +59 11 27.852437004   18.41 17.90 16.6   ~ 54 2
35 QSO B1028+511 BLL 10 31 18.5251007784 +50 53 35.817278064   17.25 16.98 16.3   ~ 192 1
36 7C 103021.19+423812.00 BLL 10 33 17.9442134328 +42 22 36.384025548   19.78 18.65 16.8   ~ 31 1
37 2MASX J10365300+4448182 Sy2 10 36 53.0207 +44 48 18.207           ~ 17 1
38 87GB 103431.3+572750 BLL 10 37 44.3078432736 +57 11 55.629345156   17.05 16.54 16.7   ~ 117 1
39 SDSS J103951.01+405542.6 SyG 10 39 51.0142910520 +40 55 42.677839812           ~ 6 0
40 7C 104324.30+550530.00 Bla 10 46 28.7992861368 +54 49 44.414309064           ~ 7 1
41 SDSS J105115.89+464417.3 BLL 10 51 15.89582464 +46 44 17.3680399   19.76 19.09 17.2   ~ 41 1
42 2MASX J10520407+4241543 BLL 10 52 04.1267108880 +42 41 53.208095028       15.8   ~ 15 1
43 7C 105047.29+494553.00 BLL 10 53 44.1256067376 +49 29 55.999047156   18.70 17.76 13.8   ~ 138 2
44 PB 720 BLL 10 54 31.8917538408 +38 55 21.650262924   17.46 17.19 17   ~ 53 1
45 NGC 3468 Bla 10 57 31.1765 +40 56 46.078   14.2       ~ 56 1
46 ICRF J105837.7+562811 Sy1 10 58 37.7276569824 +56 28 11.207405028   16.80 16.31 14.58   ~ 208 2
47 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2670 1
48 7C 110215.80+470927.00 Bla 11 05 07.0713 +46 53 18.669       16.3   ~ 13 1
49 87GB 110306.7+400253 BLL 11 05 53.8199992608 +39 46 56.934699564       15.1   ~ 19 1
50 2MASX J11065660+6033594 Bla 11 06 56.6737 +60 33 59.543           ~ 10 0
51 2MASX J11093902+3831220 BLL 11 09 39.0344 +38 31 22.315           ~ 4 1
52 NGC 3569 Bla 11 12 08.0880 +35 27 07.666   14.5       ~ 46 1
53 2MASX J11191650+6239259 Bla 11 19 16.5548 +62 39 25.645           ~ 9 0
54 2MASX J11215666+4314568 Bla 11 21 56.6979459336 +43 14 56.877702972       16.1   ~ 11 0
55 ICRF J112413.1+513349 Sy2 11 24 13.1657202672 +51 33 49.362468264   17.01 17.01 15.7   ~ 23 1
56 6C 113337+702604 BLL 11 36 26.4090783600 +70 09 27.309071232   15.16 14.49 10.51   ~ 368 1
57 LEDA 2703015 BLL 11 36 30.0868711488 +67 37 04.345988232   18.19 17.45 15.3   ~ 142 1
58 NGC 3809 Bla 11 41 16.0609 +59 53 08.782   13.6       ~ 41 1
59 2MASX J11430486+7304090 BLL 11 43 04.9454437104 +73 04 09.235421292       15.9   ~ 7 1
60 87GB 114026.7+613850 BLL 11 43 12.0989781432 +61 22 10.767264780   18.76 18.13 16.6   ~ 47 1
61 NGC 3894 SyG 11 48 50.35817663 +59 24 56.3822416   12.9   11.57   ~ 245 1
62 6C 114716+554640 SyG 11 50 00.1 +55 28 21       14.3   ~ 26 1
63 8C 1148+592 BLL 11 51 24.6603608736 +58 59 17.566414656   16.53 16.09 16.3   ~ 84 1
64 ICRF J120208.6+444422 Sy2 12 02 08.6631026592 +44 44 22.472768616   18.70 18.22     ~ 31 1
65 ICRF J120303.5+603119 Sy2 12 03 03.5072095320 +60 31 19.163050032   16.82 16.04     ~ 132 1
66 ICRF J120922.7+411941 BLL 12 09 22.7879963712 +41 19 41.371293540   18.42 17.83 16.74   ~ 119 1
67 NGC 4148 Bla 12 10 07.9651176792 +35 52 39.434032164   14.6       ~ 40 1
68 7C 121100.10+510113.00 Bla 12 13 29.2778975688 +50 44 29.374130220   14.18       ~ 65 2
69 87GB 121944.6+583113 BLL 12 22 09.3010840296 +58 14 21.448956588   19.17 18.46     ~ 17 1
70 MCG+08-23-044 QSO 12 30 11.8521285960 +47 00 22.654126404   15.6       ~ 40 1
71 ICRF J123131.3+641418 Sy2 12 31 31.3949261640 +64 14 18.280701600   18.36 17.62 14.3   ~ 148 2
72 LEDA 2068085 Bla 12 31 51.8614 +35 39 58.851       14.4   ~ 10 1
73 Ton 116 BLL 12 43 12.7362011736 +36 27 43.997592204   17.41 17.11 16.4   ~ 102 1
74 ICRF J124733.3+672316 Sy2 12 47 33.32959326 +67 23 16.4488689           ~ 87 1
75 LB 2449 BLL 12 48 18.7847605224 +58 20 28.717260720   16.10 15.78 15.19   ~ 189 1
76 6C 125058+531749 BLL 12 53 11.9204702472 +53 01 11.737422696   18.07 17.51 16.4   ~ 126 1
77 ICRF J130132.6+463402 Sy2 13 01 32.60628738 +46 34 02.9396004   19.86 18.94 14.64   ~ 40 1
78 87GB 125931.8+443208 BLL 13 01 46.3165925592 +44 16 19.210635408   19.19 18.80 17.9   ~ 16 1
79 7C 130622.69+440023.00 Bla 13 08 37.9058 +43 44 15.135   15.3       ~ 42 1
80 7C 130709.80+432102.00 BLL 13 09 25.5263659608 +43 05 05.576817300   17.65 17.13     ~ 81 1
81 ICRF J131739.1+411545 Sy2 13 17 39.1954 +41 15 45.621           ~ 45 0
82 2MASX J13251331+3955536 Bla 13 25 13.3643889408 +39 55 53.245066404           ~ 17 0
83 7C 133927.00+373153.00 BLL 13 41 38.6633624640 +37 16 44.861633508       15.4   ~ 13 1
84 NGC 5311 SyG 13 48 56.0756 +39 59 06.661 14.77 14.35 13.30 12.76 12.03 ~ 75 1
85 2MASX J13531435+3508495 Bla 13 53 14.3230 +35 08 49.033           ~ 8 1
86 NGC 5353 GiP 13 53 26.6998 +40 16 58.872   11.8   10.57   ~ 287 1
87 7C 141112.69+743829.00 BLL 14 11 34.6581400176 +74 24 29.726607564     17.35 17   ~ 21 1
88 2MASXI J1413437+433945 Bla 14 13 43.7194183512 +43 39 45.003838968   18.4   12.8   ~ 44 2
89 ATO J213.9033+48.5084 BLL 14 15 36.7999941576 +48 30 30.451603860   19.40 18.97 17.1   ~ 65 1
90 ICRF J141946.5+542314 Sy2 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 595 1
91 QSO B1517+656 BLL 15 17 47.5882526184 +65 25 23.285593704     15.9 16.7   ~ 123 1
92 2MASX J15180891+6657522 Bla 15 18 08.9429136888 +66 57 52.417224576           ~ 12 1
93 4FGL J1518.6+4044 Sy1 15 18 38.9001168720 +40 45 00.184596192     14.19 13.8   ~ 39 1
94 87GB 153705.9+354035 Bla 15 39 01.6603 +35 30 46.060           ~ 15 1
95 QSO B1542+614 BLL 15 42 56.9436243096 +61 29 55.346749080   16.9 16.25 16.6   ~ 135 1
96 7C 1557+5633 BLL 15 58 48.2889478488 +56 25 14.121578928   18.08 17.54 17.2   ~ 93 1
97 7C 1558+5932 QSO 15 59 01.7039 +59 24 21.841   16       ~ 43 1
98 7C 162329.50+410025.00 Bla 16 25 10.3269925320 +40 53 34.331514324   13.8       ~ 130 1
99 6C 164251+455211 BLL 16 44 19.9733510880 +45 46 44.350987764   19.44 18.50 15.2   ~ 64 1
100 7C 165211.80+395026.00 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2158 2
101 2MASX J16554737+4447250 Bla 16 55 47.3557 +44 47 24.717           ~ 8 1
102 ICRF J170124.6+395437 BLL 17 01 24.63481525 +39 54 37.0915503   17.50 17.07 16.26   ~ 55 1
103 ICRF J170446.9+713817 BLL 17 04 46.9770712224 +71 38 17.609271828   18.93 18.26 17.5   ~ 36 1
104 NGC 6338 Bla 17 15 22.9752 +57 24 40.312   14.2   8   ~ 184 2
105 6C 171546+422932 QSO 17 17 19.20955 +42 26 59.8437     16.00 12.8   ~ 43 1
106 7C 1724+5854 BLL 17 25 35.0217198072 +58 51 39.996505584   17.87 17.35 17.06   ~ 61 1
107 ICRF J172723.4+551053 Sy2 17 27 23.46931638 +55 10 53.5354709   20.84 19.77 17.15   ~ 60 3
108 6C 172704+501607 BLL 17 28 18.6242294352 +50 13 10.469553996   16.55 15.97 12.95   ~ 375 1
109 7C 172903.70+371707.00 BLL 17 30 47.0446006992 +37 14 55.130332344   17.18 17.18 16.4   ~ 55 1
110 7C 173240.39+422129.00 BLL 17 34 13.4394850080 +42 19 57.632129976           ~ 3 1
111 ICRF J174122.8+722451 BLL 17 41 22.8570128256 +72 24 51.966422892     17.46 15.8   ~ 19 1
112 ICRF J174232.0+594506 BLL 17 42 31.9998615600 +59 45 06.731291412   17.74 17.14 16.7   ~ 82 1
113 7C 1749+7006 BLL 17 48 32.8402992264 +70 05 50.768819304   17.46 17.01 15.48   ~ 429 1
114 ICRF J174900.3+432151 BLL 17 49 00.36038214 +43 21 51.2873300     18.21 19.84   ~ 96 1
115 2MASX J17504116+3956586 Bla 17 50 41.1255 +39 56 59.124   15.60       ~ 24 1
116 NGC 6521 Sy1 17 55 48.4316054256 +62 36 44.129200428   14.3   9.3   ~ 66 1
117 2MASX J17562919+5806579 Bla 17 56 29.1449 +58 06 58.236           ~ 8 1
118 2MASX J17570667+5351379 Bla 17 57 06.6838 +53 51 37.540   13.4       ~ 13 1
119 LEDA 3087064 Bla 17 57 28.2786383352 +55 23 11.864618952       12.3   ~ 15 1
120 3C 371 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 856 2
121 ATO J279.7048+48.0428 BLL 18 38 49.1550459624 +48 02 34.274232744     17.60 16.2   ~ 81 0
122 ICRF J183858.5+573539 BLL 18 38 58.5619131144 +57 35 39.281717976     16.93 15.4   ~ 19 1
123 2MASX J18403362+6212501 BLL 18 40 33.6708 +62 12 50.155           ~ 8 1
124 87GB 191204.5+660331 Bla 19 12 07.4734 +66 07 45.985           ~ 6 0
125 87GB 225853.5+345648 Bla 23 01 14.4461 +35 13 00.853           ~ 5 2

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