2009A&A...497..103B

Query : 2009A&A...497..103B

2009A&A...497..103B - Astronomy and Astrophysics, volume 497, 103-108 (2009/4-1)

Evidence of a pure starburst nature of the nuclear region of NGC253.

BRUNTHALER A., CASTANGIA P., TARCHI A., HENKEL C., REID M.J., FALCKE H. and MENTEN K.M.

Abstract (from CDS):

We present high-resolution spectral line and continuum VLBI and VLA observations of the nuclear region of NGC253 at 22GHz. While the water vapor masers in this region were detected on arcsecond and milliarcsecond scales, we could not detect any compact continuum emission with a 5σ upper limit of ∼1mJy. The observations reveal that the water maser emission is not related to a possible low-luminosity active galactic nucleus but is almost certainly associated with star-formation activity. Not detecting any compact continuum source on milliarcsecond scales also questions the presence of a - previously assumed - active nucleus in NGC 253.

Abstract Copyright: ∼

Journal keyword(s): techniques: interferometric - masers - galaxies: starburst - galaxies: individual: NGC 253

Simbad objects: 33

Full paper

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Number of rows : 33

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	IC 10	G	00 20 25.50	+59 17 17.0		13.6	9.5			~	1102	1
2	QSO B0035-252	QSO	00 38 14.73550152	-24 59 02.2352926		18.90		17.14		~	113	1
3	[AU88] 4.81-43.6	SNR	00 47 32.21	-25 17 21.8						~	7	0
4	[SHI2006] SB1	PoG	00 47 32.53	-25 17 24.0						~	4	0
5	[AU88] 5.48-43.3	SNR	00 47 32.88	-25 17 21.5						~	16	0
6	[LT2006b] 5.59 -41.6	HII	00 47 32.983	-25 17 19.50						~	8	0
7	[AU88] 5.62-41.3	SNR	00 47 33.005	-25 17 19.35						~	24	0
8	NGC 253	SyG	00 47 33.134	-25 17 19.68		8.03		6.94	8.1	~	3261	2
9	[LT2006b] 5.773-39.54	SNR	00 47 33.15	-25 17 17.5						~	13	0
10	[AU88] 5.76-39.7	Mas	00 47 33.151	-25 17 17.55						~	5	0
11	[LT2006b] 5.795-39.05	SNR	00 47 33.178	-25 17 16.93						~	38	0
12	[AU88] 5.90-37.4	HII	00 47 33.293	-25 17 15.34						~	12	0
13	[AU88] 6.40-37.1	SNR	00 47 33.79	-25 17 15.3						~	9	0
14	[AU88] 6.81-29.6	Rad	00 47 34.19	-25 17 07.6						~	4	0
15	[SHI2006] SB2	PoG	00 47 34.64	-25 17 09.5						~	4	0
16	NGC 262	Sy2	00 48 47.14147900	+31 57 25.0845702	14.04	13.90	13.06	8.53		~	722	3
17	NAME Scl Group	GrG	01 00 06	-33 44.2						~	500	0
18	QSO B0118-272	BLL	01 20 31.6628068344	-27 01 24.636341064		15.89	15.56	15.49		~	263	1
19	M 33	GiG	01 33 50.8965749232	+30 39 36.630403128	6.17	6.27	5.72			~	5728	1
20	3C 48	QSO	01 37 41.2996631208	+33 09 35.080388820		16.62	16.20			~	2766	2
21	NGC 1052	AGN	02 41 04.79849989	-08 15 20.7519527	11.84	11.41	10.47	10.71		~	1279	2
22	M 77	GiP	02 42 40.7091669408	-00 00 47.859690204	9.70	9.61	8.87	10.1	9.9	~	4501	2
23	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	16993	1
24	IC 443	SNR	06 17 34.7	+22 28 03						~	1220	1
25	NGC 2146	SBG	06 18 37.710	+78 21 25.27	11.67	11.38	10.59			~	701	2
26	UGC 3789	Sy2	07 19 30.892	+59 21 18.48		13.3				~	130	0
27	M 82	IG	09 55 52.430	+69 40 46.93	9.61	9.30	8.41			~	5767	6
28	M 106	Sy2	12 18 57.620	+47 18 13.39		9.14	8.41	8.11		~	2318	3
29	NAME Sgr A*	X	17 45 40.03599	-29 00 28.1699						~	4222	3
30	SNR G006.4-00.1	SNR	18 01 22.7	-23 17 20						~	728	1
31	RAFGL 2271	SFR	18 53 18.54	+01 14 57.9						~	499	0
32	SNR G034.6-00.5	SNR	18 56 10.650	+01 13 21.30						~	951	2
33	3C 454.3	Bla	22 53 57.7480438728	+16 08 53.561508864		16.57	16.10	15.22		~	2783	2

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