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

Astrophysical journal/˜The œAstrophysical journal(2018)

引用 57|浏览14
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摘要
We present a search for stellar members of young associations within 150 pc of the Sun, based on TGAS 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 toward a completeness-corrected survey of young association members based on Gaia DR2 in the near future.
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关键词
methods: data analysis,proper motions,stars: kinematics and dynamics
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