2003A&A...402..921D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST22:49:11

2003A&A...402..921D - Astronomy and Astrophysics, volume 402, 921-928 (2003/5-2)

Dwarfs after mergers? The case of NGC 520, NGC 772, Arp 141, NGC 3226/7, NGC 3656 and Arp 299.

DELGADO-DONATE E.J., MUNOZ-TUNON C., DEEG H.J. and IGLESIAS-PARAMO J.

Abstract (from CDS):

We present results from a survey of dwarf galaxy candidates in the vicinity of strongly interacting galaxies. The goal of the survey was a test of the hypothesis that massive condensations of stars and HI in tidal tails of large interacting galaxies may be a significant source of independent, self-gravitating dwarf galaxies. These so called tidal dwarf galaxies (TDG) can be expected to resemble the blue luminous knots found in tidal tails, but also might appear as redder, evolved systems if formed much before they are being observed. For the present study, a homogeneous subsample of 6 fields was selected from the catalog of extended objects in fields around 15 strongly interacting galaxies by Deeg et al. (1998A&AS..129..455D). Criteria for the subsample were: similar redshifts of the central interacting galaxies, and photometric completeness of the extended objects in V and R. The number density of these TDG candidates was compared with expected background galaxy densities. Within the statistical errors, background galaxies account for most, if not all of the extended objects. There is no evidence for a substantial locally formed dwarf galaxy population. Thus, we conclude that field galaxy-galaxy interactions are likely to result in the formation of only a few long-lived TDG.

Abstract Copyright:

Journal keyword(s): galaxies: interactions - galaxies: irregular - galaxies: dwarf - methods: statistical

Simbad objects: 11

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Number of rows : 11

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 NGC 520 IG 01 24 35.071 +03 47 32.68 12.41 12.24 11.42     ~ 490 3
2 NGC 772 GiP 01 59 19.5556685548 +19 00 27.476398641 11.35 11.09 10.31 10.23 9.38 ~ 304 1
3 UGC 3730 IG 07 14 20.4 +73 28 37           ~ 32 0
4 2MASX J07142057+7328502 GiP 07 14 20.5649758766 +73 28 50.357096320   13.7       ~ 37 0
5 NGC 3226 GiP 10 23 27.0067240562 +19 53 54.682329315   14.32 13.33     ~ 395 1
6 NGC 3227 GiP 10 23 30.57 +19 51 54.3   12.61 11.79     ~ 1533 2
7 NGC 3656 GiP 11 23 38.595 +53 50 31.38 14.50 14.25 12.75     ~ 125 1
8 NAME NGC 3690 West GiP 11 28 30.69 +58 33 33.4   11.8       ~ 608 4
9 UGC 6472 C G 11 28 30.70 +58 33 48.4           ~ 351 0
10 NGC 3690 IG 11 28 31.326 +58 33 41.80   13.19 12.86     ~ 883 4
11 NAME NGC 3690 East AGN 11 28 33.07 +58 33 54.2   11.8       ~ 614 4

    Equat.    Gal    SGal    Ecl

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2020.07.13-22:49:11

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