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arXiv · 1002.1171

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

Juan Li·Tao An·Zhi-Qiang Shen·Atsushi Miyazaki
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Abstract

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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Juan Li, Tao An, Zhi-Qiang Shen, Atsushi Miyazaki. 2010-02-05. ATCA Detection of SiO Masers in the Inner Parsecs of the Galactic Center. https://arxiv.org/abs/1002.1171

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