2018/04/09 by Jonathan Gagné, Olivier Roy-Loubier, Jacqueline K. Faherty +2 · 62 citations
Physics and Astronomy · #Association (psychology) #Astronomy and Astrophysical Research #Bayesian probability #Kinematics #Radial velocity #Scientific Research and Discoveries #Stellar, planetary, and galactic studies #Survey data collection #Trigonometry #astro-ph.SR
paper · pdf · doi:10.3847/1538-4357/aac2b8
published in The Astrophysical Journal 860(1), 43 (IOP Publishing) · Accepted for publication in ApJ. 34 pages, 11 figures and 4 tables
arxiv created 2018/04/09 · openalex created_date 2018/04/13 · openalex publication_date 2018/06/10 · arxiv updated 2018/06/27 · openalex updated_date 2026/08/05
Abstract 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 Σ 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, β 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.