Identification of binary and multiple systems in TGAS using the Virtual Observatory

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Jiménez Esteban, F., Solano, E. 2018. Identification of binary and multiple systems in TGAS using the Virtual Observatory. Astrometry and Astrophysics in the Gaia Sky, IAU Symposium Proceedings Series, 12, S330, 225-226, DOI: 10.1017/S1743921317006330

Binary and multiple stars have long provided an effective method of testing stellar formation and evolution theories. In particular, wide binary systems with separations > 20,000 au are particularly challenging as their physical separations are beyond the typical size of a collapsing cloud core (5,000- 10,000 au). We present here a preliminary work in which we make use of the TGAS catalogue and Virtual Observatory tools and services (Aladin, TOPCAT, STILTS, VOSA, VizieR) to identify binary and multiple star candidate systems. The catalogue will be available from the Spanish VO portal (http://svo.cab.inta-csic.es) in the coming months.

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