2020MNRAS.498.2372D


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.12CEST15:33:35

2020MNRAS.498.2372D - Mon. Not. R. Astron. Soc., 498, 2372-2383 (2020/October-3)

The SAMI galaxy survey: a range in S0 properties indicating multiple formation pathways.

DEELEY S., DRINKWATER M.J., SWEET S.M., DIAZ J., BEKKI K., COUCH W.J., FORBES D.A., BLAND-HAWTHORN J., BRYANT J.J., CROOM S., CORTESE L., LAWRENCE J.S., LORENTE N., MEDLING A.M., OWERS M., RICHARDS S.N. and VAN DE SANDE J.

Abstract (from CDS):

It has been proposed that S0 galaxies are either fading spirals or the result of galaxy mergers. The relative contribution of each pathway and the environments in which they occur remain unknown. Here, we investigate stellar and gas kinematics of 219 S0s in the SAMI Survey to look for signs of multiple formation pathways occurring across the full range of environments. We identify a large range of rotational support in their stellar kinematics, which correspond to ranges in their physical structure. We find that pressure-supported S0s with v/σ below 0.5 tend to be more compact and feature misaligned stellar and gas components, suggesting an external origin for their gas. We postulate that these S0s are consistent with being formed through a merger process. Meanwhile, comparisons of ellipticity, stellar mass, and Sersic index distributions with spiral galaxies show that the rotationally supported S0s with v/σ above 0.5 are more consistent with a faded spiral origin. In addition, a simulated merger pathway involving a compact elliptical and gas-rich satellite results in an S0 that lies within the pressure-supported group. We conclude that two S0 formation pathways are active, with mergers dominating in isolated galaxies and small groups, and the faded spiral pathway being most prominent in large groups (1013< Mhalo< 1014).

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: kinematics and dynamics

Simbad objects: 30

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Number of rows : 30

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 2MASX J08510260+0039094 G 08 51 02.6189946858 +00 39 09.789534867           ~ 5 0
2 2MASX J08533726+0143033 Sy2 08 53 37.2535080198 +01 43 03.676084479   17.95 17.33     ~ 9 0
3 2MASX J08543628+0055581 G 08 54 36.3105468807 +00 55 58.557537195           ~ 4 0
4 2MASX J08585718+0126175 G 08 58 57.1536169853 +01 26 17.732534049           ~ 5 0
5 SDSS J090625.00-001415.9 G 09 06 25.0039791237 -00 14 16.072800004           ~ 3 0
6 GAMA 279840 G 09 18 38.084 +01 03 25.01           ~ 3 0
7 LEDA 153895 G 09 19 14.6888669087 +01 46 49.190622168           ~ 5 0
8 2MASX J09211376-0013492 LIN 09 21 13.770 -00 13 49.21   17.04   15.84   ~ 9 0
9 NVSS J115656+010651 rG 11 56 57.010 +01 06 57.11   15.5   15.220   ~ 17 0
10 2MASX J11581722+0046022 EmG 11 58 17.2464942957 +00 46 02.218190844   16.934   15.988   ~ 8 0
11 2dFGRS TGN313Z252 G 11 58 21.5505530440 -01 27 30.380204048   17.372   16.049   ~ 5 0
12 2dFGRS TGN313Z073 G 12 00 08.171 -00 39 48.23   17.119   16.007   ~ 7 0
13 2dFGRS TGN449Z049 G 12 00 35.784 +01 12 22.67   17.260   16.078   ~ 5 0
14 2dFGRS TGN450Z095 G 12 00 43.551 +01 10 55.81   17.598   16.259   ~ 5 0
15 2dFGRS TGN380Z026 G 12 00 53.0913760706 +00 48 49.848852447   17.649   16.199   ~ 5 0
16 2MASX J12010026-0123220 G 12 01 00.2722122969 -01 23 22.061343936   17.692   16.533   ~ 7 0
17 2MASX J12054720+0107378 GiC 12 05 47.1981729506 +01 07 37.856963242   17.065   15.639   ~ 5 0
18 2dFGRS TGN316Z102 LIN 12 08 44.222 -00 32 27.03   16.005   14.737   ~ 10 0
19 2dFGRS TGN384Z113 G 12 09 35.1878839150 +01 07 52.151899084   17.470   16.163   ~ 6 0
20 2dFGRS TGN385Z183 G 12 16 07.5223048499 +00 39 22.702402904   18.001   16.664   ~ 5 0
21 2dFGRS TGN319Z201 G 12 20 47.207 -00 46 43.21   19.130   17.693   ~ 5 0
22 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6034 0
23 2dFGRS TGN272Z021 G 14 07 11.1062822002 -00 52 43.080517968   16.537   15.297   ~ 11 0
24 2dFGRS TGN341Z124 G 14 10 14.254 -00 34 42.77   17.007   16.233   ~ 14 0
25 2MFGC 11508 GiG 14 11 10.090 +01 28 29.03   15.2       ~ 19 0
26 2dFGRS TGN341Z040 G 14 11 43.2052848918 +00 43 12.508557487   15.6   14.965   ~ 12 0
27 2MASX J14170221-0009486 G 14 17 02.233 -00 09 48.96   15.7   15.747   ~ 12 0
28 2dFGRS TGN277Z188 G 14 26 31.7225384531 -01 41 27.314723782   17.167   15.875   ~ 5 0
29 NGC 5738 GiP 14 43 56.378 +01 36 14.56   14.7       ~ 25 0
30 2MASX J14510301-0031374 LIN 14 51 02.9929115829 -00 31 37.521521496   16.898   15.699   ~ 16 0

    Equat.    Gal    SGal    Ecl

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2021.05.12-15:33:35

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