2003A&A...400...95N

Query : 2003A&A...400...95N

2003A&A...400...95N - Astronomy and Astrophysics, volume 40095-118 (2003/3-2)

R-band imaging of the host galaxies of RGB BL Lacertae objects.

NILSSON K., PURSIMO T., HEIDT J., TAKALO L.O., SILLANPAEAE A. and BRINKMANN W.

Abstract (from CDS):

We present optical R-band images of 100 BL Lacertae objects in the ROSAT-Green Bank (RGB) sample obtained at the Nordic Optical Telescope (NOT). For 62 objects we could not find any previously published images in the literature, of these 35 are new BL Lacs discovered during the RGB BL Lac survey. We were able to resolve the host galaxy in 62% of the objects. We analyze the host galaxies using a two-dimensional fitting procedure and tabulate the best-fit core magnitude and host galaxy parameters (magnitude, effective radius, ellipticity, position angle and shape parameter β) for each object. With two exceptions, all objects are better fit by a model representing an elliptical galaxy (β=0.25) than by a disk galaxy model (β=1.0). In the two exceptions the disk host fit is only marginally better than the elliptical host fit, however, and we do not find a single clear example of a disk-dominated host galaxy. The host galaxies have an average brightness MR=-23.9±0.8 and average effective radius reff=13.2±0.8kpc. Their bulk properties are indistinguishable from normal elliptical and radio galaxies. The median β is 0.18, well below the value 0.25 that is normally used to describe ellipticals. However, the difference may be caused by a selection effect due to the dependence of β on host galaxy luminosity.

Abstract Copyright: ∼

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

CDS comments: 1H 1011+496 = H 1011+496 in Simbad. EXO 1149.9+2455 is a misprint for EXO 1146.9+2455.

Simbad objects: 104

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Number of rows : 104
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 2MASS J00075997+4712078 BLL 00 07 59.9724805320 +47 12 07.769093004   18.3   18.2   ~ 71 1
2 RX J0035.8+5950 BLL 00 35 52.6448284115 +59 50 04.513482441     19.5 17.2   ~ 195 1
3 RX J0040.2+4049 BLL 00 40 13.8112928443 +40 50 04.756997684     19.30 19.9   ~ 80 1
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 87GB 010628.1+175958 BLL 01 09 08.1769512984 +18 16 07.501949256     16.6 16.3   ~ 76 2
6 RX J0110.0+4149 BLL 01 10 04.8120900624 +41 49 50.731434480       14   ~ 35 1
7 QSO B0109+224 BLL 01 12 05.8247044608 +22 44 38.785880796   16.00 15.66 15.47   ~ 373 2
8 RX J0115.7+2520 BLL 01 15 46.1420552904 +25 19 53.344003368 18.08 17.88 18.52     ~ 85 1
9 RX J0123.1+3420 BLL 01 23 08.6375580816 +34 20 48.664188060       16.8   ~ 132 1
10 1RXS J013632.9+390556 BLL 01 36 32.5983798936 +39 05 59.199517428       15.5   ~ 146 2
11 PMN J0152+0146 BLL 01 52 39.6109440384 +01 47 17.385104112       11.8   ~ 155 1
12 8C 0149+710 BLL 01 53 25.85101910 +71 15 06.4633311     15.50     ~ 105 1
13 SDSS J020226.41+084913.6 BLL 02 02 26.4227476680 +08 49 13.691480520     19.00 19   ~ 53 1
14 RX J0214.2+5144 BLL 02 14 17.9358553848 +51 44 51.945795816       16.5   ~ 133 1
15 RX J0227.2+0201 BLL 02 27 16.5921613152 +02 02 00.007676880       18.9   ~ 65 1
16 RX J0250.6+1712 BLL 02 50 37.9604160096 +17 12 08.881094160   17.7 17.50     ~ 74 1
17 LEDA 138609 BLL 03 14 02.7340832016 +24 44 32.804176128     18.3     ~ 29 0
18 RX J0316.1+0904 BLL 03 16 12.7326021672 +09 04 43.281750684       17.2   ~ 73 1
19 RX J0321.9+2336 BLL 03 21 59.9703031416 +23 36 11.206732680     16.80 16.4   ~ 73 1
20 PMN J0326+0225 BLL 03 26 13.9481827296 +02 25 14.675937708   17.05 16.55 15.3   ~ 255 1
21 PMN J0416+0105 BLL 04 16 52.4945693352 +01 05 23.899102620   16.86 16.38 16   ~ 302 1
22 QSO B0422+004 BLL 04 24 46.8421990080 +00 36 06.329375028 16.15 15.94 16.98     ~ 378 1
23 PMN J0505+0416 BLL 05 05 34.7693853576 +04 15 54.577536876 18.07 17.80 17.56 16.8   ~ 83 1
24 RX J0650.7+2502 BLL 06 50 46.4900658984 +25 02 59.625654828 16.17 15.97 15.79 16.3   ~ 175 2
25 7C 065109.30+425147.00 BLL 06 54 43.5253496568 +42 47 58.730753904     17.00 14.9   ~ 48 1
26 4C 42.22 BLL 06 56 10.66207584 +42 37 02.7512524   15.0 16.90 11.1   ~ 90 1
27 RX J0710.5+5908 BLL 07 10 30.0683697888 +59 08 20.371772544   17.38 16.52 15.1   ~ 249 1
28 QSO B0754+10 BLL 07 57 06.64295154 +09 56 34.8522544   15.43 15.00 15.99   ~ 461 1
29 RX J0806.4+5931 BLL 08 06 25.9488552792 +59 31 06.910219092       15.7   ~ 64 1
30 [VV2006] J081421.2+294020 BLL 08 14 21.2670075288 +29 40 20.968903632   19.17 18.82     ~ 51 0
31 QSO B0829+047 BLL 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 511 2
32 US 1889 BLL 08 54 09.8887760136 +44 08 30.280418016   17.40 17.14 17   ~ 70 1
33 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
34 Ton 397 BLL 09 15 52.4015550384 +29 33 24.042671532   16.79 16.39 16.085   ~ 238 1
35 RX J0916.8+5238 BLL 09 16 51.9350409624 +52 38 28.331223072   19.02 18.10 15   ~ 82 1
36 7C 092302.70+745857.00 BLL 09 28 02.9215998024 +74 47 19.291770312   19.8 19.74 19.2   ~ 50 1
37 6C 092554+502611 BLL 09 29 15.4401569832 +50 13 35.990913000   17.18 16.80 15.94   ~ 159 2
38 7C 0927+3516 BLL 09 30 55.27911112 +35 03 37.6081515   20.98 20.35 18.40   ~ 77 1
39 ICRF J095232.1+653801 BLL 09 52 32.1923365416 +65 38 01.217805684     18.00 18   ~ 23 1
40 7C 095733.9+224735 Bla 10 00 21.8025145008 +22 33 18.641137932   18.30 18 17   ~ 85 2
41 RX J1012.7+4229 BLL 10 12 44.3054821248 +42 29 57.094313532   19.01 18.43     ~ 93 1
42 RX J1015.0+4926 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 400 3
43 RX J1037.7+5711 BLL 10 37 44.3078432736 +57 11 55.629345156   17.05 16.54 16.7   ~ 131 1
44 2E 1050.7+4946 ClG 10 53 44.1 +49 29 56           ~ 58 1
45 7C 105047.29+494553.00 BLL 10 53 44.1256067376 +49 29 55.999047156   18.70 17.76 13.8   ~ 155 2
46 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
47 Z 334-43 BLL 11 36 26.4090783600 +70 09 27.309071232   15.16 14.49 10.51   ~ 394 1
48 HS 1133+6753 BLL 11 36 30.0868711488 +67 37 04.345988232   18.19 17.45 15.3   ~ 161 1
49 RX J1149.5+2439 BLL 11 49 30.3540653568 +24 39 26.958921660   18.86 18.35 18.1   ~ 58 1
50 8C 1148+592 BLL 11 51 24.6603608736 +58 59 17.566414656   16.53 16.09 16.3   ~ 92 2
51 Ton 605 HB* 12 16 53.6748432768 +30 04 08.692883544   16.110 15.98     B 223 0
52 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
53 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
54 RX J1230.2+2518 BLL 12 30 14.0893292232 +25 18 07.136022996   15.6   14.78   ~ 177 1
55 LB 2449 BLL 12 48 18.7847605224 +58 20 28.717260720   16.10 15.78 15.19   ~ 215 1
56 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 917 1
57 ACO 1774 ClG 13 40 54.0 +39 58 28           ~ 40 0
58 7C 1338+4015 BLL 13 41 05.1067840920 +39 59 45.418368768   18.93 18.24 14.9   ~ 91 2
59 ATO J213.9033+48.5084 BLL 14 15 36.7999941576 +48 30 30.451603860   19.40 18.97 17.1   ~ 76 1
60 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
61 LEDA 3486854 BLL 14 27 30.2807057688 +54 09 23.720526720     17.40     ~ 41 1
62 RX J1428.5+4240 BLL 14 28 32.6090008440 +42 40 21.048123396   16.95 16.45 14.4   ~ 549 1
63 PG 1437+398 BLL 14 39 17.4789214824 +39 32 42.807064020   17.36 17.10 16.5   ~ 125 2
64 RX J1442.8+1200 BLL 14 42 48.2771008152 +12 00 40.348597716   18.34 17.63 15.2   ~ 189 1
65 RX J1448.0+3608 BLL 14 48 00.5826450192 +36 08 31.165443852   17.31 16.88 16.2   ~ 89 1
66 RX J1454.4+5124 BLL 14 54 27.1245711624 +51 24 33.731127900   18.76 18.35     ~ 103 1
67 RX J1516.7+2918 BLL 15 16 41.5940814168 +29 18 09.209994840       14.6   ~ 61 1
68 RX J1517.7+6525 BLL 15 17 47.5882526184 +65 25 23.285593704       16.7   ~ 131 1
69 RX J1532.0+3016 BLL 15 32 02.2318415520 +30 16 28.855961652           ~ 97 1
70 RX J1533.4+3416 BLL 15 33 24.2707322904 +34 16 40.306756692   18.59 18.31 18.1   ~ 62 0
71 2MASS J15344720+3715545 BLL 15 34 47.2078521912 +37 15 54.618295464   18.26 17.57     ~ 89 1
72 4C 14.60 BLL 15 40 49.49151924 +14 47 45.8846989   17.72 17.30 17.240   ~ 448 1
73 RX J1554.4+2011 BLL 15 54 24.1304763192 +20 11 25.399984632     17.70     ~ 112 1
74 RX J1602.2+3050 BLL 16 02 18.0690481440 +30 51 09.537519708   18.56 18.10     ~ 45 1
75 RX J1626.4+3513 BLL 16 26 25.8603470616 +35 13 41.454253488   19.05 18.54 18.1   ~ 66 1
76 RX J1644.3+4546 BLL 16 44 19.9733510880 +45 46 44.350987764   19.44 18.50 15.2   ~ 70 1
77 RX J1652.8+4022 BLL 16 52 49.9253988240 +40 23 10.106804256   18.98 18.50 17.6   ~ 44 0
78 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
79 ICRF J170446.9+713817 BLL 17 04 46.9770712224 +71 38 17.609271828   18.93 18.26 17.5   ~ 39 1
80 QSO B1717+178 BLL 17 19 13.04848035 +17 45 06.4371847   20.10 19.1 17.28   ~ 247 1
81 ZW I 187 BLL 17 28 18.6242294352 +50 13 10.469553996   16.55 15.97 12.95   ~ 396 1
82 ICRF J174232.0+594506 BLL 17 42 31.9998615600 +59 45 06.731291412   17.74 17.14 16.7   ~ 89 1
83 1RXS J174357.3+193505 BLL 17 43 57.8330083440 +19 35 09.018846384     16.80 12.7   ~ 190 1
84 7C 174359.60+395236.00 BLL 17 45 37.7544298992 +39 51 30.936584340     18.30 15.9   ~ 65 2
85 RX J1748.5+7005 BLL 17 48 32.8402992264 +70 05 50.768819304   17.46 17.01 15.48   ~ 456 2
86 ICRF J174900.3+432151 BLL 17 49 00.36038214 +43 21 51.2873300     18.21 19.84   ~ 106 1
87 7C 174843.00+470200.00 BLL 17 50 05.0110986456 +47 00 43.683226092     19.00     ~ 24 1
88 RX J1756.2+5522 BLL 17 56 15.8816206632 +55 22 18.090129072   17.23 16.87 18   ~ 72 1
89 Z 340-35 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 909 1
90 87GB 180639.0+464836 BLL 18 08 01.1957270040 +46 49 40.964952792     18.40 18.3   ~ 25 1
91 7C 181023.80+441539.00 BLL 18 11 53.405 +44 16 28.75     18.90 20.1   ~ 19 1
92 7C 181142.79+314318.00 BLL 18 13 35.2028439312 +31 44 17.620234836     17.4 15.2   ~ 116 1
93 4C 56.27 BLL 18 24 07.06837171 +56 51 01.4908155   18.9 19.30 16.48   ~ 510 1
94 6C 182826+540204 BLL 18 29 24.2822674704 +54 02 59.740254132     17.60 17.2   ~ 70 1
95 RX J1838.7+4802 BLL 18 38 49.1550459624 +48 02 34.274232744     17.60 15.671   ~ 89 0
96 1RXS J184121.3+590603 BLL 18 41 20.3046332760 +59 06 08.206599564       18.6   ~ 27 0
97 RX J1848.7+4245 BLL 18 48 47.1243279480 +42 45 39.352045248       17.8   ~ 44 1
98 RX J2039.3+5219 BLL 20 39 23.5181915742 +52 19 50.035414651     19.0 16.2   ~ 84 1
99 PMN J2145+0720 BLL 21 45 52.2999532008 +07 19 27.205685508       16   ~ 120 1
100 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
101 NVSS J224354+202103 BLL 22 43 54.7436079792 +20 21 03.775386276       16.1   ~ 116 1
102 RX J2250.0+3824 BLL 22 50 05.7481607616 +38 24 37.193100984       14.8   ~ 147 2
103 4FGL J2319.7+1609 BLL 23 19 43.4358803544 +16 11 50.171870688     18.00 17.3   ~ 36 1
104 1RXS J232243.7+343616 BLL 23 22 44.0142017808 +34 36 13.873220208       13.2   ~ 87 1

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