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arxiv: astro-ph/0103201 · v1 · submitted 2001-03-14 · 🌌 astro-ph

Search for low-mass PMS companions around X-ray selected late B stars

S. Hubrig (1) , D. Le Mignant (2) , P. North (3) , J. Krautter (4) ((1) European Southern Observatory , Chile , (2) Laboratoire d'Astrophysique , Observatoire de Grenoble , France
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W. M. Keck Observatory USA (3) Institut d'Astronomie de l'Universite de Lausanne Switzerland (4) Landessternwarte Heidelberg-Koenigstuhl Germany)
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classification 🌌 astro-ph
keywords companionssystemdetectedlatelow-masssearchstarsx-ray
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We have observed 49 X-ray detected bright late B-type dwarfs to search for close low-mass pre-main sequence (PMS) companions using the European Southern Observatory's ADONIS (Adaptive Optics Near Infrared System) instrument. We announce the discovery of 21 new companions in 9 binaries, 5 triple, 4 quadruple system and 1 system consisting of five stars. The detected new companions have K magnitudes between 6.5 mag and 17.3 mag. and angular separations ranging from 0.2 and 14.1 arcsec (18-2358 AU).

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