2019MNRAS.487.5248L

Query : 2019MNRAS.487.5248L

2019MNRAS.487.5248L - Mon. Not. R. Astron. Soc., 487, 5248-5262 (2019/August-3)

WALLABY Early Science - II. The NGC 7232 galaxy group.

LEE-WADDELL K., KORIBALSKI B.S., WESTMEIER T., ELAGALI A., FOR B.-Q., KLEINER D., MADRID J.P., POPPING A., REYNOLDS T.N., RHEE J., SERRA P., SHAO L., STAVELEY-SMITH L., WANG J., WHITING M.T., WONG O.I., ALLISON J.R., BHANDARI S., COLLIER J.D., HEALD G., MARVIL J. and ORD S.M.

Abstract (from CDS):

We report on neutral hydrogen (H I) observations of the NGC 7232 group with the Australian Square Kilometre Array Pathfinder (ASKAP). These observations were conducted as part of the Wide-field ASKAP L-Band Legacy All-sky Blind surveY (WALLABY) Early Science program with an array of 12 ASKAP antennas equipped with Phased Array Feeds, which were used to form 36 beams to map a field of view of 30 deg2. Analysing a subregion of the central beams, we detect 17 H I sources. Eleven of these detections are identified as galaxies and have stellar counterparts, of which five are newly resolved H I galaxy sources. The other six detections appear to be tidal debris in the form of H I clouds that are associated with the central triplet, NGC 7232/3, comprising the spiral galaxies NGC 7232, NGC 7232B, and NGC 7233. One of these H I clouds has a mass of M_H I_ ∼ 3 x 108 M☉ and could be the progenitor of a long-lived tidal dwarf galaxy. The remaining H I clouds are likely transient tidal knots that are possibly part of a diffuse tidal bridge between NGC 7232/3 and another group member, the lenticular galaxy IC 5181.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: groups: individual: NGC 7232 - galaxies: interactions

Simbad objects: 25

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Number of rows : 25
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 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2
2 LEDA 521885 G 22 10 11.3 -45 51 54           ~ 3 0
3 IC 5171 AG? 22 10 56.7198972600 -46 04 53.235672312   13.45   12.19 12.4 ~ 51 0
4 LEDA 521370 G 22 11 36.7 -45 54 29           ~ 5 0
5 ESO 288-49 AG? 22 11 48.56 -45 35 22.7   13.97   13.27 13.3 ~ 28 0
6 IC 5181 GiG 22 13 21.6790033968 -46 01 03.201587940   12.44 11.69 10.91   ~ 81 0
7 2MASX J22133920-4637374 G 22 13 39.1844301960 -46 37 37.721213364   16.01       ~ 2 0
8 NGC 7232A AG? 22 13 41.4231909672 -45 53 37.172507748   14.02       ~ 38 0
9 WALLABY J221403-455806 HI 22 14 03.51 -45 58 06.9           ~ 1 0
10 HIPASS J2214-45 HI 22 14 19.9 -45 55 17           ~ 4 0
11 LGG 455 GrG 22 14 40 -45 55.1           ~ 8 0
12 ESO 289-5 AG? 22 15 07.148 -46 16 53.23   14.84   13.96   ~ 14 0
13 WALLABY J221512-455442 HI 22 15 12.23 -45 54 42.5           ~ 1 0
14 WALLABY J221520-455009 HI 22 15 20.28 -45 50 09.6           ~ 1 0
15 HIPASS J2215-45 G 22 15 36.6 -45 51 09           ~ 3 0
16 NGC 7232 GiP 22 15 38.0197322088 -45 51 00.409784904   12.58 11.79 11.00 11.9 ~ 62 0
17 WALLABY J221545-454843 HI 22 15 45.79 -45 48 43.3           ~ 1 0
18 NGC 7233 GiP 22 15 48.992 -45 50 47.06   12.90 12.82 11.81   ~ 55 0
19 HD 211111 * 22 15 49.8800087880 -45 48 56.461016556   10.06 8.65     K3III 10 0
20 NGC 7232B EmG 22 15 52.9160 -45 46 59.677   13.47   12.57 12.2 ~ 35 0
21 WALLABY J221556-454903 HI 22 15 56.97 -45 49 03.9           ~ 2 0
22 HD 211121 SB* 22 15 57.7331382264 -45 50 34.751794056   10.49 8.92     K5/M0III 7 0
23 ESO 289-10 AG? 22 16 43.293 -47 07 07.04   14.81   13.89 14.5 ~ 49 0
24 ESO 289-11 AG? 22 17 16.33 -45 03 59.4   14.94   13.90 15.0 ~ 19 0
25 IC 5201 AG? 22 20 57.437 -46 02 09.06   11.53   10.71 11.7 ~ 129 0

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