2001ApJ...548..244B

Query : 2001ApJ...548..244B

2001ApJ...548..244B - Astrophys. J., 548, 244-248 (2001/February-2)

New evidence for the unified scheme of BL Lacertae objects and FR I radio galaxies.

BAI J.M. and LEE M.G.

Abstract (from CDS):

In this paper, we collect radio and X-ray observations for most Fanaroff-Riley I (FR I) radio galaxies in the Zirbel-Baum radio galaxy sample and investigate the distribution of the radio-to-X-ray effective spectral index, αrx, to test the unified scheme of BL Lac objects and FR I radio galaxies. It is found that the range of αrx for FR I radio galaxies is almost the same as that for BL Lac objects, that the distribution of αrx probably peaks at the same position as BL Lac objects, and that the distribution of αrx for FR I galaxies is similar to that for BL Lac objects. These suggest that there exist two subclasses of FR I radio galaxies: one is HBL-like, and the other is LBL-like, corresponding to high-energy-peaked (HBL) and low-energy-peaked (LBL) BL Lac objects, respectively. This result is consistent with previous VLA observations and supports the unified scheme of BL Lac objects and FR I radio galaxies.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: BL Lacertae Objects: General - Galaxies: Active - Radiation Mechanisms: Nonthermal - Radio Continuum: Galaxies - X-Rays: Galaxies

Simbad objects: 58

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Number of rows : 58
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 3C 28 rG 00 55 50.583 +26 24 36.68   18.63 19.57 16.26   ~ 213 1
2 Z 384-48 rG 00 57 34.90446247 -01 23 27.5469897   14.07 15.10     ~ 269 1
3 NGC 383 AGN 01 07 24.9647814840 +32 24 45.132586200   13.6 12.14     ~ 821 3
4 NGC 547 rG 01 26 00.6208982520 -01 20 42.432452268   13.16 13.34     ~ 363 4
5 Z 538-57 Sy1 02 23 11.41124925 +42 59 31.3853324   15.71 14.81     ~ 582 2
6 3C 75 PaG 02 57 41.64 +06 01 28.0           ~ 312 1
7 3C 76.1 rG 03 03 15.0210658512 +16 26 18.881230884   16.00 14.86     ~ 182 2
8 NGC 1218 Sy1 03 08 26.22380005 +04 06 39.3007808   12.84       ~ 413 0
9 NGC 1265 rG 03 18 15.674 +41 51 27.94   14.7       ~ 386 2
10 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
11 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
12 IC 2082 rG 04 29 08.1997552056 -53 49 40.208971800   13.9 12.79     ~ 91 1
13 MCG+01-12-009 Bla 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 2099 2
14 NGC 1692 rG 04 55 23.7155967168 -20 34 16.066069536   14.21 14.0 12.70   ~ 97 1
15 PKS 0620-526 rG 06 21 43.30328 -52 41 33.2978     15.5 19.34   ~ 92 1
16 QSO B0625-354 BLL 06 27 06.7286533392 -35 29 15.363665088   14.93       ~ 206 1
17 Z 147-20 Sy2 07 25 37.25833 +29 57 14.7920   15.60       ~ 105 2
18 Z 118-54 LIN 08 03 16.5234602568 +24 40 36.389352144   15.7       ~ 44 0
19 MCG-02-24-007 LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1077 1
20 NVSS J104318+313102 rG 10 43 18.398 +31 31 01.62   15       ~ 42 1
21 NGC 3862 Sy2 11 45 05.00904503 +19 36 22.7409909   14.98 13.97     ~ 646 1
22 Z 186-48 BLL 11 47 22.1297825184 +35 01 07.538786184   17.89 16.83 10.26   ~ 184 1
23 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
24 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
25 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
26 3C 278 QSO 12 54 36.96 -12 33 31.8     11.6     ~ 125 3
27 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
28 NGC 4869 EmG 12 59 23.3588349024 +27 54 41.731884360 15.03 14.9 13.52 13.292 12.536 ~ 286 0
29 NGC 5096B rG 13 20 14.7283808160 +33 08 36.294146268   15.0       ~ 112 2
30 NGC 5090 rG 13 21 12.84471811 -43 42 16.8452073   12.59 11.51 10.84   ~ 208 1
31 NGC 5141 Sy2 13 24 51.44109717 +36 22 42.7725745   13.9       ~ 192 1
32 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
33 IC 4296 rG 13 36 39.03253319 -33 57 57.0730368   11.52 12.99 10.00 10.79 ~ 520 2
34 Z 162-10 LIN 13 48 52.4892734448 +26 35 34.353002688   14.0       ~ 241 2
35 Z 162-21 BLL 13 52 17.8719816576 +31 26 46.487381604   16.10 15.10     ~ 502 3
36 NGC 5532 LIN 14 16 52.9370483073 +10 48 26.616631120   13.3 12.59     ~ 364 2
37 Z 163-41 Sy2 14 24 40.5266308536 +26 37 30.467191764   15.6 15.62     ~ 119 1
38 IC 1065 Sy2 14 49 21.5927137128 +63 16 13.799495280   17.30 16.39     ~ 378 1
39 VV 204 SyG 15 04 57.1195361592 +26 00 58.455780156   15.24       ~ 299 1
40 7C 151131.1+261840 Sy2 15 13 40.0235447784 +26 07 23.749576572   16.30       ~ 239 1
41 Z 49-90 Sy2 15 16 44.4893939136 +07 01 17.825410740   15.19 14.17     ~ 463 4
42 Z 137-3 SyG 15 56 03.9120697432 +24 26 52.920616865   15.4       ~ 106 1
43 NGC 6086 LIN 16 12 35.5357829352 +29 29 05.246712168   14.8       ~ 202 1
44 NGC 6109 LIN 16 17 40.54006 +35 00 15.1861   14.9       ~ 193 1
45 NGC 6137 rG 16 23 03.1194649896 +37 55 20.550626868   14.1       ~ 130 1
46 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
47 3C 346.0 BLL 16 43 48.605 +17 15 49.43   17.2       ~ 270 1
48 MCG+01-43-006 SyG 16 51 07.9886687784 +04 59 35.547131472     18.25     ~ 502 1
49 Z 114-25 rG 18 38 26.25747 +17 11 49.6210           ~ 205 2
50 PKS 1839-48 rG 18 43 14.61807 -48 36 23.1997   16.79 17.5 15.25   ~ 64 1
51 Z 201-45 rG 18 57 37.5 +38 00 31   14.9       ~ 57 1
52 LEDA 63899 EmG 19 58 29.1197853864 -55 09 12.876222276   16.5       ~ 63 0
53 NGC 6998 rG 21 01 37.712 -28 01 54.35   15.21 15.6 13.61   ~ 96 1
54 3C 433.0 Sy2 21 23 44.5778423928 +25 04 27.670672416   17.660 16.350     ~ 338 1
55 ESO 75-41 BLL 21 57 05.9801262624 -69 41 23.686042524   14.23 13.79 12.94   ~ 299 1
56 NGC 7237 SyG 22 14 46.885 +13 50 27.13   15       ~ 100 1
57 Z 514-50 SyG 22 31 20.5885689288 +39 21 29.593072404   14.6       ~ 446 1
58 NGC 7720 Sy1 23 38 29.38324020 +27 01 53.2580084   13.9 13.3     ~ 565 4

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