A 22 GHz Maser near the Galactic Center

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Session 22 -- Galactic Structure; Galactic Center
Display presentation, Monday, 9, 1995, 9:20am - 6:30pm

[22.15] A 22 GHz Maser near the Galactic Center

Deborah A. Levine (IPAC/UCLA), Donald F. Figer (UCLA), Mark Morris (UCLA), Ian S. McLean (UCLA)

In the course of a long-term survey of 22 GHz H$_2$O masers in the inner galaxy, we serendipitously discovered a maser emission source 45" from SgrA*. It is located approximately 30" N and 35" E of SgrA*, near the edge of the Eastern arm of the radio mini-spiral, presumably coinciding with the inside edge of the circumnuclear disk. A luminous, reddened star having an IR spectrum typical of a late-type star has been found at this location. The radial velocity of the maser is remarkably similar to that expected for gas in the circumnuclear disk at this location. The extinction is consistent with an inner galaxy source located near, or possibly within, the circumnuclear disk. We will present the potential implications of this object for star formation in the galactic center environment, notably the circumnuclear disk.

Monday program listing