2020MNRAS.498.2372D


Query : 2020MNRAS.498.2372D

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 - 2023
#notes
1 LEDA 1171745 G 08 51 02.6189417280 +00 39 09.793184328           ~ 9 0
2 2MASX J08533726+0143033 Sy2 08 53 37.2507752376 +01 43 03.755388396   17.95 17.33     ~ 10 0
3 SDSS J085436.31+005558.5 G 08 54 36.3106455792 +00 55 58.561163508           ~ 5 0
4 LEDA 153350 G 08 58 57.1534488816 +01 26 17.734220844           ~ 7 0
5 SDSS J090625.00-001415.9 G 09 06 25.0030446624 -00 14 16.051574544           ~ 4 0
6 GAMA 279840 G 09 18 38.0814011160 +01 03 25.014060900           ~ 4 0
7 LEDA 153895 G 09 19 14.6904532416 +01 46 49.210012920           ~ 8 0
8 2MASX J09211376-0013492 LIN 09 21 13.7473550856 -00 13 49.549158948   17.04   15.84   ~ 11 0
9 NVSS J115656+010651 rG 11 56 57.0118806480 +01 06 57.233239956   15.5   15.220   ~ 21 0
10 2MASX J11581722+0046022 EmG 11 58 17.2446604392 +00 46 02.219224332   16.934   15.988   ~ 9 0
11 LEDA 1118188 G 11 58 21.5504425320 -01 27 30.378526272   17.372   16.049   ~ 7 0
12 LEDA 1137739 G 12 00 08.171 -00 39 48.23   17.119   16.007   ~ 9 0
13 2dFGRS TGN449Z049 G 12 00 35.7823452480 +01 12 22.687324452   17.260   16.078   ~ 6 0
14 2dFGRS TGN450Z095 G 12 00 43.5515347296 +01 10 55.852991184   17.598   16.259   ~ 6 0
15 LEDA 1176176 G 12 00 53.0916734256 +00 48 49.847899680   17.649   16.199   ~ 8 0
16 2MASX J12010026-0123220 G 12 01 00.2725036992 -01 23 22.063317504   17.692   16.533   ~ 8 0
17 2MASX J12054720+0107378 GiC 12 05 47.1984890256 +01 07 37.855883172   17.065   15.639   ~ 5 0
18 2dFGRS TGN316Z102 LIN 12 08 44.2206319464 -00 32 26.819915280   16.005   14.737   ~ 13 0
19 2dFGRS TGN384Z113 G 12 09 35.1883891632 +01 07 52.151397888   17.470   16.163   ~ 7 0
20 2dFGRS TGN385Z183 G 12 16 07.5223929024 +00 39 22.703199012   18.001   16.664   ~ 6 0
21 2dFGRS TGN319Z201 G 12 20 47.207 -00 46 43.21   19.130   17.693   ~ 6 0
22 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6346 0
23 2dFGRS TGN272Z021 G 14 07 11.1068932920 -00 52 43.084136136   16.537   15.297   ~ 12 0
24 LEDA 1139914 G 14 10 14.254 -00 34 42.77   17.007   16.233   ~ 16 0
25 2MFGC 11508 GiG 14 11 10.090 +01 28 29.03   15.2       ~ 21 0
26 Z 18-75 G 14 11 43.2052787472 +00 43 12.500846652   15.6   14.965   ~ 16 0
27 2MASX J14170221-0009486 G 14 17 02.2381660056 -00 09 48.930595416   15.7   15.747   ~ 13 0
28 LEDA 1112654 G 14 26 31.7227808496 -01 41 27.316853700   17.167   15.875   ~ 6 0
29 NGC 5738 GiP 14 43 56.3724873912 +01 36 14.917737204   14.7       ~ 29 0
30 LEDA 160196 LIN 14 51 02.9931374112 -00 31 37.522979148   16.898   15.699   ~ 18 0

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2022.12.06-05:59:18

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