2013MNRAS.429.1858D


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.29CET21:11:58

2013MNRAS.429.1858D - Mon. Not. R. Astron. Soc., 429, 1858-1871 (2013/March-1)

Dwarf elliptical galaxies as ancient tidal dwarf galaxies.

DABRINGHAUSEN J. and KROUPA P.

Abstract (from CDS):

The formation of tidal dwarf galaxies (TDGs) is triggered by the encounters of already existing galaxies. Their existence is predicted from numerical calculations of encountering galaxies and is also well documented with observations. The numerical calculations on the formation of TDGs furthermore predict that TDGs cannot contain significant amounts of non-baryonic dark matter. In this paper, the first exhaustive sample of TDG candidates from observations and numerical calculations is gathered from the literature. These stellar systems are gas-rich at the present, but they will probably evolve into gas-poor objects that are indistinguishable from old dwarf elliptical galaxies (dEs) based on their masses and radii. Indeed, known gas-poor TDGs appear as normal dEs. According to the currently prevailing cosmological paradigm, there should also be a population of primordial galaxies that formed within haloes of dark matter in the same mass range. Due to their different composition and origin, it would be expected that objects belonging to that population would have a different structure than TDGs and would thus be distinguishable from them, but such a population cannot be identified from their masses and radii. Moreover, long-lived TDGs could indeed be numerous enough to account for all dEs in the Universe. Downsizing, i.e. that less massive galaxies tend to be younger, would then be a natural consequence of the nature of the dEs. If these claims can be kept up in the light of future observations, the presently prevailing understanding of galaxy formation would need to be revised.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: formation - dark matter

Simbad objects: 38

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Number of rows : 38

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 2MASX J00260594+2543097 G 00 26 05.9518167215 +25 43 09.291689196   15.68   13.85   ~ 22 0
2 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1982 2
3 NGC 835 Sy2 02 09 24.606 -10 08 09.31   13.29 12.45 12.24   ~ 168 0
4 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1158 3
5 HCG 26b G 03 21 57.15 -13 38 54.0   16.74   15.46   ~ 12 0
6 NGC 1614 AGN 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 595 0
7 2MASX J05013782-0415294 G 05 01 37.832 -04 15 28.48   13.44   12.76   ~ 66 1
8 2MASXI J0501387-041533 G 05 01 38.301 -04 15 33.91   15.62   14.43   ~ 22 0
9 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1927 1
10 IRAS 06076-2139 EmG 06 09 45.7859423135 -21 40 23.516504022   15.64   14.46   ~ 60 0
11 2MASX J07032428-6015221 Sy2 07 03 24.2520923348 -60 15 22.465765682   16.02   14.72   ~ 49 1
12 NAME IRAS F08572+3915 NW LIN 09 00 25.364 +39 03 54.23     16.66     ~ 361 1
13 UGC 5044 IG 09 27 43.5271868175 +12 17 15.113758671   15.43   13.87   ~ 50 1
14 IC 2545 IG 10 06 04.581 -33 53 05.55   15.27 14.27 14.25   ~ 93 0
15 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 766 1
16 NGC 4038 GiP 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1269 1
17 NGC 4039 GiP 12 01 53.8 -18 53 06   11.08   9.77   ~ 1125 1
18 LEDA 39024 LIN 12 13 46.107 +02 48 41.50           ~ 309 1
19 [JDJ2006] 3 G 12 30 57.3833546242 +12 25 44.499140903   19.32 17.97     ~ 41 0
20 IC 819 AGN 12 46 10.060 +30 43 54.64           ~ 251 1
21 IC 820 AGN 12 46 11.2492024659 +30 43 21.853173446   14.1       ~ 104 1
22 LEDA 43211 LSB 12 47 59.922 +10 58 14.89   21       ~ 63 0
23 ACO 3526 ClG 12 48 51.8 -41 18 21           ~ 961 2
24 LEDA 126817 GiC 12 58 42.589 +27 45 37.78           ~ 44 0
25 LEDA 718304 GiG 13 47 20.5 -30 20 54   18.27 17.91     ~ 24 0
26 [BDL2001] NGC 5291S GiG 13 47 23.0 -30 27 30           ~ 12 0
27 2MASX J14373831-1500239 Sy1 14 37 38.317 -15 00 23.97   16.58 16.40     ~ 243 1
28 2MASX J15265942+3558372 LIN 15 26 59.425 +35 58 37.23   15.61       ~ 243 1
29 2MASX J16023279+3734532 LIN 16 02 32.798 +37 34 53.28           ~ 17 0
30 NAME Tadpole Galaxy IG 16 06 03.940 +55 25 31.33   15.0       ~ 105 0
31 IC 4687 AGN 18 13 39.829 -57 43 31.25   14.35 14.3 12.78   ~ 115 1
32 NGC 7318A GiP 22 35 56.85 +33 57 54.3   14.4   13.13   ~ 121 0
33 NGC 7318B GiP 22 35 58.3906020031 +33 57 57.832811083   14.06   12.47   ~ 122 0
34 NGC 7319 Sy2 22 36 03.602 +33 58 33.18   14.57 13.53 12.65   ~ 251 0
35 ESO 148-2 Sy2 23 15 46.772 -59 03 15.94   14.94 14.73 13.95   ~ 232 1
36 NGC 7674 Sy2 23 27 56.6974755223 +08 46 44.238278540 13.84 13.92 13.23 12.64   ~ 625 4
37 MCG+01-59-081 G 23 27 58.7548658924 +08 46 57.877607821   16.10   14.38   ~ 51 0
38 NGC 5291SW G ~ ~           ~ 8 0

    Equat.    Gal    SGal    Ecl

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2020.01.29-21:11:58

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