2001ApJ...555..232R

Query : 2001ApJ...555..232R

2001ApJ...555..232R - Astrophys. J., 555, 232-239 (2001/July-1)

HIPASS detection of an intergalactic gas cloud in the NGC 2442 group.

RYDER S.D., KORIBALSKI B., STAVELEY-SMITH L., KILBORN V.A., MALIN D.F., BANKS G.D., BARNES D.G., BHATAL R., DE BLOK W.J.G., BOYCE P.J., DISNEY M.J., DRINKWATER M.J., EKERS R.D., FREEMAN K.C., GIBSON B.K., HENNING P.A., JERJEN H., KNEZEK P.M., MARQUARDING M., MINCHIN R.F., MOULD J.R., OOSTERLOO T., PRICE R.M., PUTMAN M.E., SADLER E.M., STEWART I., STOOTMAN F., WEBSTER R.L. and WRIGHT A.E.

Abstract (from CDS):

We report the discovery from the H I Parkes All-Sky Survey (HIPASS) of a gas cloud associated with the asymmetric spiral galaxy NGC 2442. This object, designated HIPASS J0731-69, contains ∼10⁹ M_☉ of H I, or nearly one-third as much atomic gas as NGC 2442 itself. No optical counterpart to any part of HIPASS J0731-69 has yet been identified, consistent with the gas being diffuse and its streamlike kinematics. If the gas in HIPASS J0731-69 was once part of NGC 2442, then it was most likely a fairly recent tidal encounter with a moderately massive companion that tore it loose, although the possibility of ram-pressure stripping cannot be ruled out. This discovery highlights the potential of the HIPASS data for yielding new clues to the nature of some of the best-known galaxies in the local universe.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual (NGC 2442) - Galaxies: Interactions - galaxies: intergalactic medium - Radio Lines: Galaxies

Nomenclature: [RKS2001] HIPASS J0731-69 N=1, [RKS2001] JHHMMSS.s+DDMMSS N=1, [RKS2001] JHHMM+DDMM N=2.

Simbad objects: 37

Full paper

View the references in ADS

Number of rows : 37

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	NAME SMC	G	00 52 38.0	-72 48 01		2.79	2.2			~	10690	1
2	6dFGS gJ032504.2-365540	GiP	03 25 04.2	-36 55 40		15.49				~	25	0
3	[PBM98] J032508-365534.5	HI	03 25 08	-36 55.6						~	2	1
4	ACO S 373	ClG	03 38 30	-35 27.3						~	1753	0
5	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	16760	1
6	LEDA 20690	G	07 19 49.4	-72 43 43		15.7		15.4	17.7	~	10	0
7	NGC 2397	GiG	07 21 19.8926907744	-69 00 05.031850284		12.85		11.57		~	89	0
8	ESO 58-31	G	07 21 55.8	-68 50 45		14.98		13.95		~	10	0
9	NGC 2276	IG	07 27 14.485	+85 45 16.20		12.3				~	364	0
10	[RKS2001] J0731-6920	PoC	07 31	-69.3						~	1	1
11	[RKS2001] HIPASS J0731-69	Cld	07 31	-69.0						~	7	1
12	2MASX J07311023-6855584	G	07 31 10.2261783240	-68 55 58.300230396		16.58		15.29	15.4	~	22	0
13	LGG 147	GrG	07 32 32.8	-69 30 10						~	4	0
14	NAME NGC 2442 Group	GrG	07 33	-69.5						~	11	0
15	[RKS2001] J0734-6904	PoC	07 34	-69.1						~	1	1
16	ESO 59-6	G	07 34 51.1	-69 46 49		15.18		14.04		~	10	1
17	NGC 2434	GiG	07 34 51.1504542360	-69 17 02.996020032	12.82	12.50	11.26	10.84		~	182	1
18	ESO 59-7	GiG	07 36 12.305	-69 47 46.74		15.07		13.41		~	16	1
19	NGC 2442	LIN	07 36 23.7700545576	-69 31 50.997856332	11.47	11.15	10.42	9.71	10.4	~	209	1
20	LEDA 100030	G	07 36 40.7098	-69 26 38.613						~	2	0
21	LEDA 21406	G	07 37 12.0	-69 20 04						~	12	0
22	ESO 59-10	G	07 37 36.6675308136	-69 45 13.177090044		15.26		13.82		~	15	1
23	AM 0738-692	G	07 38 11.8	-69 28 27						~	4	0
24	ESO 59-12	GiG	07 38 32.146	-68 46 14.46		14.16		12.63		~	17	0
25	M 95	GiP	10 43 57.7313485800	+11 42 13.301191332	10.71	10.51	9.73	9.48		~	1069	2
26	M 96	GiP	10 46 45.744	+11 49 11.78	10.42	10.15	9.25	8.99		~	795	1
27	NGC 4273	GiP	12 19 56.063	+05 20 36.12		12.3				~	256	0
28	NGC 4388	Sy2	12 25 46.820	+12 39 43.45	11.91	11.76	11.02			~	1299	2
29	NAME HI 1225+01	HI	12 27 19	+01 30.4						~	82	1
30	NGC 4522	GiG	12 33 39.657	+09 10 29.54		13.6				~	357	0
31	NGC 4654	GiP	12 43 56.638	+13 07 34.86		11.8				~	546	1
32	NGC 6872	IG	20 16 56.4025198800	-70 46 05.070595584		11.97	11.59	10.71	11.9	~	85	0
33	IC 4970	IG	20 16 57.9	-70 44 57		14.16	13.88	13.06		~	27	0
34	NGC 7421	GiG	22 56 54.3533970816	-37 20 50.437978152	12.61	12.64	11.93	11.71	12.1	~	118	1
35	NAME NGC 3256 Group	GrG	~	~						~	10	0
36	NAME NGC 3256 Cloud	Cld	~	~						~	1	0
37	NAME Leo Ring	HI	~	~						~	52	0

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