2002ApJ...578..842S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST03:35:10

2002ApJ...578..842S - Astrophys. J., 578, 842-854 (2002/October-3)

Discovery of a group of star-forming dwarf galaxies in A1367.

SAKAI S., KENNICUTT R.C.Jr, VAN DER HULST J.M. and MOSS C.

Abstract (from CDS):

We describe the properties of a remarkable group of actively star-forming dwarf galaxies and H II galaxies in the A1367 cluster, which were discovered in a large-scale Hα imaging survey of the cluster. Approximately 30 Hα-emitting knots were identified in a region approximately 150 kpc across, in the vicinity of the spiral galaxies NGC 3860, CGCG 97-125, and CGCG 97-114. Follow-up imaging and spectroscopy reveal that some of the knots are associated with previously uncataloged dwarf galaxies (MB=-15.8 to -16.5), while others appear to be isolated H II galaxies or intergalactic H II regions. Radial velocities obtained for several of the knots show that they are physically associated with a small group or subcluster, including CGCG 97-114 and CGCG 97-125. No comparable concentration of emission-line objects has been found elsewhere in any of the eight northern Abell clusters surveyed to date. The strong Hα emission in the objects and their high spatial density argue against this being a group of normal, unperturbed dwarf galaxies. Emission-line spectra of several of the knots also show some to be anomalously metal-rich relative to their luminosities. The results suggest that many of these objects were formed or triggered by tidal interactions or mergers involving CGCG 97-125 and other members of the group. A Westerbork Synthesis Radio Telescope H I map of the region shows direct evidence for tidal interactions in the group. These objects may be related to the tidal dwarf galaxies found in some interacting galaxy pairs, merger remnants, and compact groups. They could also represent evolutionary precursors to the class of isolated ultracompact dwarf galaxies that have been identified in the Fornax Cluster.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: Individual: Alphanumeric: A1367 - Galaxies: Dwarf - Galaxies: Evolution - Galaxies: Formation

Nomenclature: Fig.4, Table 2: [SKV2002] Dw N (Nos 1-3), [SKV2002] Dw 1 a (Nos a-b), [SKV2002] Dw 3 a (Nos a-c), [SKV2002] KN (Nos K1-K6), [SKV2002] K2 a (Nos a-c), [SKV2002] CGCG 97-125 a (Nos a-d), [SKV2002] CGCG 97-114 a (Nos a-c).

Simbad objects: 44

goto Full paper

goto View the reference in ADS

Number of rows : 44

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9446 1
2 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5135 1
3 NGC 604 HII 01 34 32.1 +30 47 01           ~ 544 0
4 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1538 0
5 UGCA 116 H2G 05 55 42.645 +03 23 32.23 10.74 11.68 11.46   11.82 ~ 501 0
6 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 997 1
7 NAME M 81-82 Group GrG 09 55 +69.1           ~ 634 0
8 NAME M 82 Group GrG 09 55 53.0 +69 40 50           ~ 24 0
9 NGC 3372 HII 10 44 19.0 -59 53 21           ~ 888 2
10 NGC 3603 OpC 11 15 18.6 -61 15 26           ~ 942 1
11 [SKV2002] K1 ? 11 44 44.28 +19 48 14.0           ~ 4 0
12 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 994 1
13 [SKV2002] Dw 3 b ? 11 44 45.49 +19 47 45.5           ~ 1 0
14 [SKV2002] Dw 3 G 11 44 46.13 +19 47 37.5   19.09       ~ 5 0
15 [SKV2002] CGCG 97-114 b ? 11 44 46.36 +19 46 41.4           ~ 2 0
16 [SKV2002] Dw 3 a ? 11 44 46.39 +19 47 40.6           ~ 2 0
17 2MASX J11444664+1945279 GiC 11 44 46.6112083074 +19 45 28.241900967 17.05 16.60   14.89   ~ 29 0
18 MCG+03-30-087 H2G 11 44 47.791 +19 46 24.29 16.22 16.53   15.45   ~ 69 0
19 2MASX J11444891+1948289 H2G 11 44 48.900 +19 48 28.86 17.39 17.44   16.05   ~ 16 0
20 NGC 3860 AGN 11 44 49.1689905748 +19 47 42.142765911 14.81 14.61   13.12   ~ 103 0
21 [SKV2002] K2 b ? 11 44 49.61 +19 46 04.0           ~ 3 0
22 [SKV2002] K2 a ? 11 44 50.61 +19 46 02.4           ~ 3 0
23 [SKV2002] K2 ? 11 44 50.81 +19 46 05.1           ~ 6 0
24 [SKV2002] Dw 2 GiC 11 44 51.094 +19 47 18.15 20.11 18.72   19.93   ~ 12 0
25 [SKV2002] K5 ? 11 44 51.84 +19 47 51.7           ~ 3 0
26 [SKV2002] Dw 1 a ? 11 44 53.74 +19 47 31.2           ~ 2 0
27 [SKV2002] Dw 1 b ? 11 44 53.74 +19 47 31.2           ~ 2 0
28 SDSS J114454.61+194732.5 GiC 11 44 54.61776 +19 47 32.5680   18.35       ~ 11 0
29 [SKV2002] CGCG 97-125 b ? 11 44 54.66 +19 46 11.5           ~ 2 0
30 2MASX J11445486+1946349 GiG 11 44 54.849 +19 46 35.28   15.4   14.14   ~ 70 0
31 [SKV2002] K3 ? 11 44 55.28 +19 48 03.3           ~ 2 0
32 NGC 4038 GiP 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1274 1
33 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1556 0
34 NGC 4039 GiP 12 01 53.8 -18 53 06   11.08   9.77   ~ 1130 1
35 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2546 2
36 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1484 0
37 [SKV2002] K4 ? ~ ~           ~ 1 0
38 [SKV2002] CGCG 97-114 c ? ~ ~           ~ 1 0
39 [SKV2002] CGCG 97-114 a ? ~ ~           ~ 2 0
40 [SKV2002] CGCG 97-125 d ? ~ ~           ~ 1 0
41 [SKV2002] CGCG 97-125 c ? ~ ~           ~ 2 0
42 [SKV2002] CGCG 97-125 a ? ~ ~           ~ 2 0
43 [SKV2002] K2 c ? ~ ~           ~ 1 0
44 [SKV2002] K6 ? ~ ~           ~ 1 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2002ApJ...578..842S and select 'bookmark this link' or equivalent in the popup menu


2020.07.13-03:35:10

© Université de Strasbourg/CNRS

    • Contact