ATCA Detection of SiO Masers in the Inner Parsecs of the Galactic Center

Details ATCA Detection of SiO Masers in the Inner Parsecs of the Galactic Center ATCA Detection of SiO Masers in the Inner Parsecs of the Galactic Center

2010-02-05

arxiv.org/abs/1002.1171v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

2 pages, 1 figure, Proceedings article for the Galactic Center Workshop 2009, Shanghai. The conference proceedings will be pub

Scientific paper

We present sensitive Australia Telescope Compact Array (ATCA) observations of SiO masers in the inner parsecs of the Galactic center (GC). We detected five SiO J=2-1, v=1 (86 GHz) masers in the innner 25 arcsec (1 pc) of the GC. All the detected 86 GHz SiO masers are previously known SiO J=1-0, v=1 (43 GHz) masers and associated with late-type stars. Eighteen 43 GHz SiO masers were detected within 50 arcsec (2 pc) of Sagittarius A*. Among them, seven are detected for the first time, which brings the total number of 43 GHz SiO masers to 22 in this region.

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