Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-07-24
Astrophys.J.652:370-375,2006
Astronomy and Astrophysics
Astrophysics
17 pages incl. 4 figures, to be published in ApJ 10 Nov. 2006
Scientific paper
10.1086/507764
Using adaptive optics at the Gemini North telescope we have obtained a K-band spectrum of the star near the center of the luminous Galactic center bowshock IRS8, as well as a spectrum of the bowshock itself. The stellar spectrum contains emission and absorption lines characteristic of an O5-O6 giant or supergiant. The wind from such a star is fully capable of producing the observed bowshock. However, both the early spectral type and the apparently young age of the star, if it is single, mark it as unique among hot stars within one parsec of the center.
Geballe Thomas Ronald
Najarro Francisco
Rigaut Francois
ROY Jean-Rene
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