2009A&A...496..677V

Query : 2009A&A...496..677V

2009A&A...496..677V - Astronomy and Astrophysics, volume 496, 677-682 (2009/3-4)

The molecular gas content of blue dwarf galaxies. A collapsing detached molecular system in He 2-10?

VANZI L., COMBES F., RUBIO M. and KUNTH D.

Abstract (from CDS):

We present new observations of a sample of blue dwarf galaxies in the lines of CO(3-2) and HCN(4-3). The observations were obtained with the 12m APEX telescope located at an altitude of 5100 m in Chajnantor (ALMA site). We detected CO(3-2) emission in seven of nine observed galaxies in our sample. In two galaxies, NGC 5253 and He2-10, we mapped the central 20"x20" in the CO(3-2) emission line. In He 2-10, we detected an extended component of molecular gas to the north-east of the main body of the galaxy. Comparing our data with previous HI and CO observations, we speculate that the presence of this detached cloud of molecular gas is produced by the merger already known in He 2-10, and could lead to the formation of a small tidal dwarf galaxy. The HCN(4-3) line was observed in NGC 5253 and He 2-10 only, but not detected.

Abstract Copyright: ∼

Journal keyword(s): galaxies: dwarf - galaxies: ISM - galaxies: starburst

Simbad objects: 11

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Number of rows : 11

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 Magellanic Clouds	GrG	03 00	-71.0						~	6625	1
2	ESO 495-21	bCG	08 36 15.190	-26 24 33.66	12.04	11.93	11.45	11.09	12.3	~	548	3
3	M 82	IG	09 55 52.430	+69 40 46.93	9.61	9.30	8.41			~	5700	6
4	IC 745	AGN	11 54 12.2719925760	+00 08 11.823367524		14.59	14.19			~	125	1
5	NGC 4123	AGN	12 08 11.1187718376	+02 52 41.781736956		13.1				~	330	2
6	NGC 4309	GiP	12 22 12.349	+07 08 39.80		14.3				~	115	0
7	NGC 4385	AGN	12 25 42.8099950872	+00 34 21.278141652		14.63	14.12	13.1	12.8	~	266	0
8	NGC 4630	H2G	12 42 31.146	+03 57 37.29		13.4				~	137	0
9	NGC 4701	GiG	12 49 11.5931072112	+03 23 19.389227964		13.1				~	161	0
10	NGC 4713	GiG	12 49 57.8802780576	+05 18 40.933127196		12.3				~	293	0
11	NGC 5253	AGN	13 39 55.990	-31 38 24.11	11.48	10.94	10.49	10.33	13.47	~	1331	4

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