2017ApJ...843...50C

Query : 2017ApJ...843...50C

2017ApJ...843...50C - Astrophys. J., 843, 50-50 (2017/July-1)

¹²CO(J = 1 $→$ 0) on-the-fly mapping survey of the Virgo cluster spirals. II. Molecular gas properties in different density environments.

CHUNG E.J., YUN M.S., VERHEIJEN M.A.W. and CHUNG A.

Abstract (from CDS):

This study investigated the properties of the molecular gas content and star formation activity of 17 Virgo spirals, 21 Ursa Major (UMa) spirals, 13 Pisces spiral galaxies, and a comparison sample of 11 field spiral galaxies with a spatially resolved gas and stellar distribution. The H i-deficient galaxies with a def_H i_ > 0.4 have a similar range of CO luminosity normalized by the K-band luminosity (L_CO/L_K) like the field spirals, although their CO content can be smaller by up to a factor of 2. The CO, H i, and stellar disk diameters are closely related to each other for both cluster and field galaxies, and the relative diameters of the CO and H i disks grow monotonically and smoothly as the H i-to-stellar disk diameter ratio decreases. Cluster galaxies have a molecular gas consumption time up to 10 times shorter than that of the field comparison sample, suggesting a significant change in the molecular gas content and star formation activity among all the cluster galaxies, even when they do not show any sign of H i stripping. The strongly H i-stripped Virgo cluster galaxies show only a modestly reduced total gas consumption time, indicating that the star formation activity and gas consumption are a highly local (rather than global) phenomenon. Our finding is that the depletion of cold gas by ram-pressure stripping and/or starvation caused by preprocessing in each cluster environment makes galaxies evolve passively.

Journal keyword(s): galaxies: clusters: individual: (Virgo, Ursa Major, Pisces) - galaxies: evolution - galaxies: star formation - ISM: molecules - ISM: molecules

Simbad objects: 52

Full paper

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Number of rows : 52

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	Z 501-21	GiG	00 49 02.096	+28 13 04.83		15.2				~	67	0
2	Z 501-31	GiG	00 52 58.309	+29 01 56.58		14.1				~	88	0
3	Z 501-40	AGN	00 54 50.2180539288	+29 14 48.170620788		15.3				~	99	0
4	Z 501-43	GiC	00 55 22.6886995848	+30 29 13.916286600		15.7				~	25	0
5	Z 501-48	GiC	00 56 09.2601342480	+31 04 28.298973324		15.6		12.4		~	52	0
6	NAME PSC CL	ClG	00 58 25.0	+30 39 11						~	131	1
7	IC 66	GiG	01 00 32.4635334408	+30 47 49.836364620		15.0				~	53	0
8	Z 501-75	GiG	01 05 18.970	+31 40 55.56		15.7				~	53	0
9	NGC 383	AGN	01 07 24.9647814840	+32 24 45.132586200		13.6	12.14			~	821	3
10	Z 501-93	GiG	01 08 04.7316405888	+33 27 11.242926720		14.7				~	49	0
11	NGC 410	GiG	01 10 58.9016492712	+33 09 07.053878052	13.08	12.52	11.48			~	163	2
12	NGC 452	Sy2	01 16 14.8011705936	+31 02 01.664706300		14.0				~	117	1
13	NGC 494	GiG	01 22 55.3597843464	+33 10 25.999438692		13.8				~	57	0
14	NGC 496	GiG	01 23 11.5872831672	+33 31 45.417105984		14.3				~	118	0
15	NGC 507	rG	01 23 39.950	+33 15 22.22		13.0				~	459	1
16	Z 502-82	Sy2	01 25 31.4551524072	+32 08 10.473856512		15.01	13.96			~	237	0
17	NGC 529	GiG	01 25 40.2853500672	+34 42 46.858807800		13.1		11.68		~	105	0
18	Z 502-86	AG?	01 27 34.851	+31 33 16.87		14.4				~	71	0
19	NGC 579	GiG	01 31 46.5032678328	+33 36 55.999075500		13.6				~	69	0
20	NGC 582	GiG	01 31 58.045	+33 28 35.45		13.7				~	86	0
21	M 74	G	01 36 41.7451236624	+15 47 01.107512304	10.52	10.00	9.46	9.16		~	1934	1
22	NAME Psc-Per Supercluster	SCG	02 33.2	+41 37						~	444	1
23	NGC 2841	LIN	09 22 02.6778711696	+50 58 35.737082868	10.43	10.09	9.22			~	1113	1
24	NGC 2903	AGN	09 32 10.111	+21 30 02.99	10.44	9.75	9.07	8.68		~	1204	3
25	NGC 3180	GiG	10 18 16.985	+41 25 27.77		10.4				~	777	0
26	NGC 3198	EmG	10 19 54.990	+45 32 58.88	10.83	10.87	10.33			~	946	1
27	M 95	GiP	10 43 57.7313485800	+11 42 13.301191332	10.71	10.51	9.73	9.48		~	1238	2
28	M 96	GiP	10 46 45.744	+11 49 11.78	10.42	10.15	9.25	8.99		~	862	1
29	NAME UMa Region	reg	11 00	+50.0						~	333	0
30	NGC 3521	EmG	11 05 48.5680991376	-00 02 09.245076540	10.06	9.83	9.02	10.1	9.6	~	879	2
31	NGC 3877	GiG	11 46 07.782	+47 29 40.20		11.8				~	347	0
32	NGC 3938	GiG	11 52 49.4335936248	+44 07 14.697085116	10.80	10.90	10.38			~	566	1
33	NGC 3949	GiC	11 53 41.7311041896	+47 51 31.401451476		10.9				~	351	1
34	NGC 3953	GiG	11 53 49.0086582552	+52 19 36.475395312		11.08		9.71		~	380	0
35	NGC 4298	GiC	12 21 32.7578814360	+14 36 22.048690716		12.04	11.34			~	358	1
36	M 61	Sy2	12 21 54.9282582888	+04 28 25.597367184	10.07	10.18	9.65			~	1084	1
37	NGC 4419	LIN	12 26 56.4505296720	+15 02 50.688833388	12.42	12.08	11.16			~	419	2
38	NGC 4438	LIN	12 27 45.6705493536	+13 00 31.708096380	11.37	11.02	10.17			~	668	2
39	NAME Virgo Cluster	ClG	12 30 47.8	+12 23 07						~	7107	0
40	M 87	AGN	12 30 49.42338414	+12 23 28.0436859	10.16	9.59	8.63		7.49	~	7815	3
41	NGC 4527	AGN	12 34 08.49600	+02 39 13.7160		12.4				~	549	2
42	NGC 4536	H2G	12 34 27.12887	+02 11 16.3680	11.14	11.16	10.55	17.393		~	913	3
43	M 91	LIN	12 35 26.4446761320	+14 29 46.760333748		14.63	13.57			~	639	0
44	NGC 4567	H2G	12 36 32.6979947472	+11 15 28.716262668	12.25	12.06	11.31			~	339	2
45	NGC 4568	H2G	12 36 34.292	+11 14 19.07		12.11	11.19			~	394	2
46	M 90	Sy2	12 36 49.8009839880	+13 09 46.523813040	10.56	10.26	9.54			~	953	1
47	NGC 4647	H2G	12 43 32.542	+11 34 56.89		12.5	12.5			~	423	1
48	M 94	SyG	12 50 53.0737971432	+41 07 12.900884628	9.15	8.96	8.24	7.78		~	1476	2
49	M 63	LIN	13 15 49.2741893928	+42 01 45.728076108		9.34	8.59	8.35		~	1292	2
50	NAME Ursa Major Cluster	ClG	15 08.8	+67 07						~	424	1
51	NGC 6946	H2G	20 34 52.332	+60 09 13.24		10.5				~	2661	2
52	NGC 7331	LIN	22 37 04.0506038088	+34 24 56.800076508	10.65	10.35	9.48			~	1284	2

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