GCIRS 16SW: A massive eclipsing binary in the Galactic center

被引：52
作者：
Martins, F.
Trippe, S.
Paumard, T.
Ott, T.
Genzel, R.
Rauw, G.
Eisenhauer, F.
Gillessen, S.
Maness, H.
Abuter, R.
机构：
[1] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany
[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[3] Univ Liege, Inst Astron & Geofis, B-4000 Cointe Ougree, Belgium
[4] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
[5] European So Observ, D-85748 Garching, Germany
来源：
ASTROPHYSICAL JOURNAL | 2006年 / 649卷 / 02期
关键词：
binaries : eclipsing; Galaxy : center; stars : early-type;
D O I：
10.1086/508328
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report on the spectroscopic monitoring of GCIRS 16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K band. Radial velocities are derived from the He I 2.112 mu m line complex and vary regularly with a period of 19.45 days, indicating that the star is most likely an eclipsing binary. Under various assumptions, we are able to derive a mass of similar to 50 M circle dot for each component.
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页码：L103 / L106
页数：4
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