2001ApJ...551L.143L

Query : 2001ApJ...551L.143L

2001ApJ...551L.143L - Astrophys. J., 551, L143-L146 (2001/April-3)

Very large array detection of the ionized stellar winds arising from massive stars in the Galactic Center Arches cluster.

LANG C.C., GOSS W.M. and RODRIGUEZ L.F.

Abstract (from CDS):

The Galactic center Arches stellar cluster, detected and studied until now only in the near-infrared, is comprised of at least 100 massive (M*≥20 M☉) stars. Here we report the detection at centimeter wavelengths of radio continuum emission from eight radio sources associated with the cluster. Seven of these radio sources have rising spectral indices between 4.9 and 8.5 GHz and coincide spatially with the brightest stars in the cluster, as determined from JHK photometry and Brα and Brγ spectroscopy. Our results confirm the presence of powerful ionized winds in these stars. The eighth radio source has a nonthermal spectrum, and its nature is yet unclear, but it could be associated with a lower mass young star in the cluster.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Center - Stars: Mass Loss - Stars: Winds, Outflows

Nomenclature: Fig.2, Table 1: [LGR2001] ARN (Nos AR1-AR8).

Simbad objects: 21

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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2019 2
2 [MY89] W1 Rad 17 45 36.0 -28 50 50           ~ 12 0
3 GAL 000.07+00.04 reg 17 45 36.7 -28 52 55           ~ 15 1
4 [MY89] W2 Rad 17 45 36.7 -28 51 10           ~ 10 0
5 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14414 0
6 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4389 3
7 [MY89] E1 Rad 17 45 45.9 -28 50 13           ~ 17 0
8 NAME Banana reg 17 45 46 -28 50.7           ~ 16 1
9 [MY89] E2 Rad 17 45 46.1 -28 50 23           ~ 20 0
10 WR 102aa WR* 17 45 49.71 -28 49 25.4           WN8-9 27 0
11 WR 102ad WR* 17 45 50.22 -28 49 21.9           WN8-9 25 0
12 WR 102ag WR* 17 45 50.40 -28 49 20.9           WN8-9 22 0
13 WR 102ah WR* 17 45 50.43 -28 49 21.9           WN8-9h 32 0
14 WR 102ai WR* 17 45 50.47 -28 49 31.5           WN8-9 18 0
15 WR 102aj WR* 17 45 50.48 -28 49 19.2           WN8-9h 27 0
16 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 737 0
17 WR 102al WR* 17 45 50.58 -28 49 17.2           WN7-8 25 0
18 WR 102bb WR* 17 45 50.84 -28 49 26.0           WN8-9 20 0
19 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 525 0
20 NAME Sickle HII 17 46 15.2 -28 49 49           ~ 121 0
21 NAME Galactic Center Radio Arc Rad 17 46 16.9 -28 48 52           ~ 124 0

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