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

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

2009A&A...497..103B - Astronomy and Astrophysics, volume 497103-108 (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.

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

Simbad objects: 33

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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 - 2026 		#notes
1 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
2 PKS J0038-2459 Bla 00 38 14.73550152 -24 59 02.2352926   18.90   17.14   ~ 145 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           ~ 17 0
6 [LT2006b] 5.59 -41.6 HII 00 47 32.983 -25 17 19.50           ~ 9 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 ~ 3588 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           ~ 41 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 Bla 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 778 2
17 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 526 0
18 QSO B0118-272 BLL 01 20 31.6628068344 -27 01 24.636341064   15.89 15.56 15.49   ~ 288 1
19 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
20 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
21 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
22 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
23 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
24 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
25 NGC 2146 AGN 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 765 2
26 Z 286-10 Sy2 07 19 30.892 +59 21 18.48   13.3       ~ 148 0
27 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
28 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
29 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
30 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 782 1
31 RAFGL 2271 SFR 18 53 18.54 +01 14 57.9           ~ 537 0
32 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 1034 2
33 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2

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