A search for close companions in Sco OB2

Details A search for close companions in Sco OB2 A search for close companions in Sco OB2

2003-11-12

arxiv.org/abs/astro-ph/0311288v1

Astronomy and Astrophysics

Astrophysics

to appear in the proceedings of the ESO Workshop on 'Science with Adaptive Optics', held in Garching, Germany, 16-19 September

Scientific paper

Using adaptive optics we study the binary population in the nearby OB association Scorpius OB2. We present the first results of our near-infrared adaptive optics survey among 199 (mainly) A- and B-type stars in Sco OB2. In total 151 components other than the target stars are found, out of which 77 are probably background stars. Our findings are compared with data collected from literature. Out of the remaining 74 candidate physical companions 42 are new, demonstrating that many stars A/B stars have faint, close companions.

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