2021MNRAS.507.2949M

Query : 2021MNRAS.507.2949M

2021MNRAS.507.2949M - Mon. Not. R. Astron. Soc., 507, 2949-2967 (2021/October-3)

WALLABY Pre-Pilot Survey: the effects of angular momentum and environment on the H I gas and star formation properties of galaxies in the Eridanus supergroup.

MURUGESHAN C., KILBORN V.A., FOR B.-Q., WONG O.I., WANG J., WESTMEIER T., STEVENS A.R.H., SPEKKENS K., KAMPHUIS P., STAVELEY-SMITH L., LEE-WADDELL K., KLEINER D., KORIBALSKI B.S., CLUVER M.E., OH S.-H., RHEE J., CATINELLA B., REYNOLDS T.N., DENES H. and ELAGALI A.

Abstract (from CDS):

We use high-resolution ASKAP observations of galaxies in the Eridanus supergroup to study their H I, angular momentum, and star formation properties, as part of the WALLABY pre-pilot survey efforts. The Eridanus supergroup is composed of three sub-groups in the process of merging to form a cluster. The main focus of this study is the Eridanus (or NGC 1395) sub-group. The baryonic specific angular momentum - baryonic mass (jb-Mb) relation for the Eridanus galaxies is observed to be an unbroken power law of the form jb ∝Mb^0.57 ±0.05^, with a scatter of ∼0.10 ± 0.01 dex, consistent with previous works. We examine the relation between the atomic gas fraction, fatm, and the integrated atomic disc stability parameter q (the fatm-q relation), and find that the Eridanus galaxies deviate significantly from the relation owing to environmental processes such as tidal interactions and ram pressure affecting their H I gas. We find that a majority of the Eridanus galaxies are H I deficient compared to normal star-forming galaxies in the field. We also find that the star formation among the Eridanus galaxies may be suppressed owing to their environment, thus hinting at significant levels of pre-processing within the Eridanus sub-group, even before the galaxies have entered a cluster-like environment.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: evolution - galaxies: fundamental parameters - galaxies: ISM - galaxies: kinematics and dynamics

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 51

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Number of rows : 51
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 1325 EmG 03 24 25.5769895640 -21 32 38.626241964   12.28 11.55 11.13 11.6 ~ 176 0
2 MCG-04-09-005 LSB 03 24 34.33 -21 58 18.8   16.07   15.28   ~ 7 0
3 MCG-04-09-007 LSB 03 24 55.30 -21 47 02.0   15.81   15.00   ~ 25 0
4 NAME NGC 1332 Group GrG 03 26 17.1 -21 20 05           ~ 18 0
5 NGC 1332 GiP 03 26 17.321 -21 20 07.33   11.45   9.84   ~ 378 0
6 MCG-04-09-014 EmG 03 27 35.568 -21 13 41.74   14.60   13.62 14.0 ~ 64 0
7 ESO 481-28 G 03 28 31.9 -22 29 58   16.48   15.32   ~ 7 0
8 MCG-04-09-016 GiC 03 29 38.31 -23 21 01.2   15.77   14.80   ~ 34 0
9 NGC 1347 IG 03 29 41.8 -22 16 44   13.74   12.97   ~ 54 0
10 MCG-04-09-018 Sy2 03 30 47.162 -21 03 29.64   14.23   13.16   ~ 47 0
11 MCG-04-09-021 LSB 03 31 38.3844442008 -25 00 29.430886644   14.76   13.75   ~ 28 0
12 LEDA 831121 G 03 31 48.0 -21 13 07           ~ 5 0
13 NAME NGC 1400 Group GrG 03 32 16.00 -18 33 54.0           ~ 75 0
14 MCG-04-09-023 LSB 03 32 57.621 -21 05 21.65   14.25   13.29   ~ 29 0
15 MCG-04-09-024 AG? 03 33 02.25 -24 07 58.3   15.46   14.55 15.5 ~ 55 0
16 IC 1952 Sy2 03 33 26.680 -23 42 46.04   13.57   12.30 12.9 ~ 78 0
17 IC 1953 GiG 03 33 41.885 -21 28 43.03   12.41   12.3 12.1 ~ 126 0
18 NGC 1359 EmG 03 33 47.698 -19 29 31.01   12.61   12.25 13.1 ~ 102 0
19 MCG-04-09-027 EmG 03 33 51.010 -21 03 14.77   15.00       ~ 13 0
20 MCG-04-09-028 AG? 03 33 51.32 -21 27 19.7   14.59   13.64 14.3 ~ 22 0
21 NGC 1367 EmG 03 35 01.3451198496 -24 55 59.504904516   11.48   9.98 11.1 ~ 209 0
22 MCG-04-09-030 AG? 03 35 28.07 -21 13 01.3   15.35   14.75   ~ 25 0
23 IC 1962 GiG 03 35 37.49 -21 17 38.6   14.67   13.99 14.2 ~ 63 0
24 MCG-04-09-032 LSB 03 36 17.381 -25 36 16.92   15.15   13.91   ~ 40 0
25 MCG-04-09-034 EmG 03 36 53.694 -24 54 47.07   15.17   14.20 14.8 ~ 43 0
26 NGC 1385 EmG 03 37 28.323 -24 30 04.60 11.28 11.50 10.94 10.45 11.7 ~ 318 2
27 NGC 1390 GiG 03 37 52.160 -19 00 30.07   14.63   13.31 14.0 ~ 60 0
28 ESO 548-56 EmG 03 37 57.77 -21 39 42.7   16.11   15.62   ~ 11 0
29 MCG-03-10-018 EmG 03 38 10.674 -19 44 05.96   15.25   14.54   ~ 14 0
30 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
31 NGC 1395 SyG 03 38 29.789 -23 01 39.69   10.71   8.99   ~ 289 0
32 NAME Eridanus ClG GrG 03 38 32.00 -22 18 51.0           ~ 200 0
33 NGC 1398 GiG 03 38 52.130 -26 20 16.22   10.37   8.90 10.1 ~ 250 0
34 ESO 482-24 LSB 03 38 59.73 -22 35 02.4   16.21   15.36   ~ 21 0
35 MCG-04-09-043 LSB 03 39 21.43 -21 24 56.6   15.10       ~ 17 0
36 ESO 482-27 AG? 03 39 41.21 -23 50 39.8   16.63   15.97   ~ 12 0
37 MCG-03-10-027 GiG 03 40 02.715 -19 21 59.47   15.46   14.59   ~ 29 0
38 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
39 MCG-04-09-044 GiP 03 40 40.99 -22 17 13.4   15.62   14.96   ~ 24 0
40 NGC 1415 EmG 03 40 56.8533432024 -22 33 52.235588808   12.47   11.08   ~ 129 1
41 NGC 1414 GiP 03 40 57.135 -21 42 50.07   14.65   13.88   ~ 58 0
42 MCG-04-09-050 EmG 03 41 14.649 -23 50 20.09   13.69   12.46   ~ 76 0
43 NGC 1422 EmG 03 41 31.064 -21 40 53.38   13.99   12.93   ~ 85 0
44 MCG-04-09-053 G 03 42 18.80 -22 45 09.0   14.97   13.72   ~ 21 0
45 MCG-04-09-055 LSB 03 43 38.17 -21 14 15.7   15.29   14.33   ~ 20 0
46 LEDA 135108 G 03 44 21.72 -20 44 43.2   16.33       ~ 5 0
47 MCG-04-09-057 EmG 03 44 56.81 -23 42 00.0   15.55       ~ 9 0
48 NGC 1438 EmG 03 45 17.2435693200 -23 00 08.765070516   13.28   11.96   ~ 63 0
49 MCG-04-10-002 LSB 03 48 14.0636570472 -21 28 27.908585652   13.60   12.09   ~ 84 0
50 NAME NGC 1566 Group GrG 04 20 00.6 -54 56 17           ~ 180 0
51 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0

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