New Hot Stars in the Galactic Center

Details New Hot Stars in the Galactic Center New Hot Stars in the Galactic Center

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20917203m&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #172.03; Bulletin of the American Astronomical Society,

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Scientific paper

We report the discovery of 3 massive post-main-sequence stars in the Galactic center region (GCR). Using K-band spectroscopy, we have identified 2 of them as nitrogen-type Wolf-Rayet (WR) stars of WN6 and WN9 subtype, and the other a B2 Ia supergiant. The WR stars both have an X-ray counterpart in the Chandra catalog, and were found as part of an ongoing X-ray-guided search for young massive stars and high-mass X-ray binaries in the GCR. The B supergiant was identified within a cavity of a warm dust structure, as revealed by the Spitzer Space Telescope. None of these stars have an obvious association with a stellar cluster. We briefly discuss the implications that these stars have for the history and mode of star formation in the GCR, and for the fate of stellar clusters evolving in the GCR tidal field.

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