Preliminary results on a Virtual Observatory search for companions to Luyten stars

Details Preliminary results on a Virtual Observatory search for companions to Luyten stars Preliminary results on a Virtual Observatory search for companions to Luyten stars

2008-10-11

arxiv.org/abs/0810.2030v1

Astronomy and Astrophysics

Astrophysics

"Highlights of Spanish Astrophysics V", Proceedings of the VIII Scientific Meeting of the Spanish Astronomical Society (SEA) h

Scientific paper

The Aladin sky atlas of the Virtual Observatory has shown to be a powerful and easy-handling tool for the discovery, confirmation, and characterisation of high proper-motion, multiple stellar systems of large separation in the solar vicinity. Some of these systems have very low mass components (at the star/brown dwarf boundary) and are amongst the least bound systems found to date. With projected physical separations of up to tens of thousands astronomical units, these systems represent a challenge for theoretical scenarios of formation of very low-mass stars and brown dwarfs. Here we show preliminary results of a novel "virtual" search of binary systems and companions to Luyten stars with proper motions between 0.5 and 1.0 arcsec/a.

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