Journal article
VLA Detection of the Ionized Stellar Winds Arising from Massive Stars in the Galactic Center Arches Cluster
The Astrophysical journal, Vol.551(2), pp.L143-L146
04/17/2001
DOI: 10.1086/320032
Abstract
The Galactic center Arches stellar cluster, detected and studied until now
only in the near-infrared, is comprised of at least one hundred massive (M>20
Msun) 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 determine from
JHK photometry and Brackett alpha and Brackett Gamma 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.
Details
- Title: Subtitle
- VLA Detection of the Ionized Stellar Winds Arising from Massive Stars in the Galactic Center Arches Cluster
- Creators
- Cornelia C Lang - University of California, Los AngelesW. M Goss - National Radio Astronomy ObservatoryLuis F Rodriguez - Universidad de Morelia
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.551(2), pp.L143-L146
- DOI
- 10.1086/320032
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- American Astronomical Society
- Language
- English
- Date published
- 04/17/2001
- Academic Unit
- Liberal Arts and Science Admin; Physics and Astronomy
- Record Identifier
- 9984428672902771
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