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arXiv · 1804.03093

BANYAN. XII. New Members of Nearby Young Associations from Gaia-Tycho Data

Jonathan Gagné·Olivier Roy-Loubier·Jacqueline K. Faherty·René Doyon·Lison Malo
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Abstract

We present a search for stellar members of young associations within 150 pc of the Sun based on Gaia-Tycho and an updated version of the BANYAN $\Sigma$ software to determine Bayesian membership probabilities that includes Gaia-2MASS color-magnitude diagrams. We identify 32 new F0-M3-type bona fide members of the 10-200 Myr-old Sco-Cen, Carina, Tucana-Horologium, Columba and Octans associations and the AB Doradus, $\beta$ Pictoris and Carina-Near moving groups. These new bona fide members have measurements of their full kinematics and literature data consistent with a young age. We also confirm the membership of 66 previously known candidate members using their Gaia-Tycho trigonometric distances or new literature radial velocities, and identify 219 additional new candidate members, most of which do not yet have a radial velocity measurement. This work is the first step towards a completeness-corrected survey of young association members based on Gaia-DR2 in the near future.

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Jonathan Gagné, Olivier Roy-Loubier, Jacqueline K. Faherty, René Doyon, Lison Malo. 2018-04-09. BANYAN. XII. New Members of Nearby Young Associations from Gaia-Tycho Data. https://doi.org/10.3847/1538-4357%2Faac2b8

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