2001A&A...374..454T

Query : 2001A&A...374..454T

2001A&A...374..454T - Astronomy and Astrophysics, volume 374454-464 (2001/8-1)

ROSAT-HRI observations of six southern galaxy pairs.

TRINCHIERI G. and RAMPAZZO R.

Abstract (from CDS):

We present the detailed analysis of the X-ray data for 6 pairs, isolated or in poor groups, observed at high resolution with the ROSAT HRI . In all cases, the stronger X-ray source is associated with the brighter early-type member and is extended. The extent varies from galactic to group scale, from 3 (RR 210b) to 182kpc( RR 22a). The fainter members are detected only in two pairs, RR 210 and RR 259. Except for one case, no significant substructures have been detected in the X-ray maps, possibly also as a consequence of the poor statistics. The core radii of the X-ray surface brightness profiles are in the range 1-3kpc. The distribution of the luminosities of galaxies in pairs encompasses a very wide range of both luminosities and LX/LB ratios, in spite of the very small number of objects studied so far. Our data provide no evidence that pair membership affects the X-ray properties of galaxies. Observation are discussed in the context of the pair/group evolution.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual : general - galaxies: interactions - X-rays: galaxies

Simbad objects: 48

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Number of rows : 48
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 NGC 439 Sy1 01 13 47.2734723912 -31 44 49.942062528   12.38   10.81   ~ 77 0
2 NGC 441 BiC 01 13 51.2523537744 -31 47 18.105929160   13.76   12.18   ~ 36 0
3 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
4 NGC 1317 GiP 03 22 44.2823209512 -37 06 13.180903956 12.20 11.78 11.02 10.22   ~ 240 1
5 NGC 1587 GiP 04 30 39.9359019384 +00 39 41.922470340   13.3       ~ 146 0
6 KPG 99 PaG 04 30 40 +00 39.4           ~ 4 0
7 NGC 1588 GiP 04 30 43.77 +00 39 53.0   14.1       ~ 84 0
8 NGC 2305 GiG 06 48 37.2713054112 -64 16 23.745616176   12.82   10.98   ~ 79 0
9 NGC 2307 GiG 06 48 50.7600739032 -64 20 07.611115920   13.38   11.76   ~ 35 0
10 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0
11 NGC 2300 AG? 07 32 20.486 +85 42 31.90   12.2       ~ 346 0
12 Z 37-28 AGN 10 24 43.5495255888 +06 26 03.324590052   15.1       ~ 17 0
13 Z 37-27 LIN 10 24 45.1185556008 +06 24 48.336369444   15.5       ~ 20 0
14 NGC 3239 AG? 10 25 04.867 +17 09 49.21   13.5       ~ 202 0
15 NGC 3607 Sy2 11 16 54.65687 +18 03 06.5120   13.84 12.76     ~ 490 1
16 KPG 278 PaG 11 16 56.2 +18 06 00           ~ 2 0
17 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 527 0
18 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
19 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
20 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1
21 LGG 270 GrG 12 06 34.7 -29 24 16           ~ 3 0
22 NGC 4105 Sy2 12 06 40.767 -29 45 36.64   11.35 12.52 9.53   ~ 131 0
23 LGG 271 GrG 12 06 45 -30 15.4           ~ 4 0
24 NGC 4106 GiP 12 06 45.5905 -29 46 06.190   11.61 11.35     ~ 76 0
25 IC 764 EmG 12 10 14.191 -29 44 12.52   13.03   11.90 12.3 ~ 83 0
26 IC 3290 GiG 12 25 08.972 -39 46 31.76   12.97   11.43   ~ 30 0
27 NGC 4373 rG 12 25 17.8183715160 -39 45 35.245218672   11.59 11.05 10.09   ~ 116 2
28 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
29 NGC 4647 H2G 12 43 32.542 +11 34 56.89   12.5 12.5     ~ 423 1
30 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
31 NGC 4782 rG 12 54 35.698 -12 34 06.92   13 12.75 13.11   ~ 158 2
32 NGC 4783 GiP 12 54 36.60 -12 33 28.2   12.5 12.80     ~ 126 1
33 NGC 5090 rG 13 21 12.84471811 -43 42 16.8452073   12.59 11.51 10.84   ~ 208 1
34 NGC 5091 AG? 13 21 18.5628909288 -43 43 24.369696948   13.94 13.35 12.43   ~ 40 1
35 NGC 5291 Sy2 13 47 24.5000261808 -30 24 25.449445800   15.18 14.00 13.57 12.7 ~ 161 1
36 ESO-LV 445-0301 G 13 47 25.5 -30 23 50   14.09   12.39   ~ 3 0
37 NGC 5480 AG? 14 06 21.522 +50 43 29.99   12.6       ~ 224 1
38 NGC 5481 AG? 14 06 41.2682134344 +50 43 23.823257124   13.5       ~ 136 0
39 Z 170-19 LIN 17 22 38.3103237600 +30 52 12.159231780   15.4       ~ 29 0
40 KPG 510 PaG 17 22 39.100 +30 52 32.19           ~ 2 0
41 Z 170-20 Sy2 17 22 39.9317077560 +30 52 52.623719292   15.42 14.68     ~ 197 1
42 HCG 91 CGG 22 09 00.8 -27 47 36           ~ 56 0
43 NGC 7214 Sy1 22 09 07.6631604816 -27 48 34.160960772   12.48 14.10 11.40   ~ 149 0
44 HCG 91d GiG 22 09 08.20 -27 48 01.0   12.64   11.57   ~ 26 0
45 NGC 7236 LIN 22 14 44.9886363216 +13 50 47.450963760   14.3 14.3     ~ 286 1
46 NGC 7237 SyG 22 14 46.885 +13 50 27.13   15       ~ 100 1
47 NGC 7673 EmG 23 27 41.060 +23 35 20.18 12.84 13.17 12.76     ~ 282 2
48 NGC 7677 GiP 23 28 06.240 +23 31 53.19 13.93 13.93 13.19     ~ 130 1

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