1995PASP..107..715I

Query : 1995PASP..107..715I

1995PASP..107..715I - Publ. Astron. Soc. Pac., 107, 715-729 (1995/August-0)

Galaxies and their environments.

IRWIN J.A.

Abstract (from CDS):

Four questions are asked related to galaxies and their environments in the context of sepculation as to which direction the field may go over the next decade. These are: What is a galaxy? Where does a galaxy end? Are galaxies open or closed? and How important are interactions? In the process, these questions touch upon some of the challenging problmes facing us today in extragalactic astronomy, such as galaxy formation and evolution, the importance of environemntal effects, and the nature and extent of dark matter.

Abstract Copyright: ∼

Journal keyword(s):

Simbad objects: 39

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Number of rows : 39
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 7828 AG? 00 06 27.082 -13 24 58.07   14       ~ 55 0
2 NGC 7829 EmG 00 06 28.9840063680 -13 25 14.217196296   15.07       ~ 26 0
3 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
6 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
7 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
8 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
9 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
10 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
11 NGC 2207 AG? 06 16 22.0336889136 -21 22 21.759218400   11.48 10.65 10.21 11.9 ~ 301 4
12 IC 2163 AG? 06 16 27.9671433048 -21 22 33.133211832   12.55   11.28   ~ 172 2
13 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
14 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
15 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 946 1
16 NGC 3628 LIN 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 853 3
17 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
18 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
19 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1
20 NGC 4138 Sy2 12 09 29.8011417048 +43 41 06.864140004 12.46 12.29 11.32 10.82   ~ 436 1
21 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
22 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
23 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
24 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
25 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
26 NGC 4789A GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 614 1
27 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
28 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
29 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
30 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
31 UGC 9024 LSB 14 06 40.543 +22 04 12.18   16.0       ~ 55 0
32 NGC 5774 GiP 14 53 42.46224 +03 34 56.9532   13.9 12.94     ~ 168 1
33 NGC 5775 GiG 14 53 57.653 +03 32 40.10   13.0 11.34     ~ 460 2
34 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 807 0
35 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
36 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
37 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
38 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
39 NGC 7252 AGN 22 20 44.7748209648 -24 40 41.909518200 12.26 12.46 12.06 11.57   ~ 720 1

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