Membership status of TWA22AB

Ramachrisna Teixeira, Christine Ducourant, Gael Chauvin, Alberto G. O. Krone–Martins, Mickael Bonnefoy, Inseok Song
2009 Proceedings of the International Astronomical Union  
AbstractUsing the ESO NTT/SUSI2 telescope, we observed TWA22AB during five different observing runs over 1.2 years to measure its trigonometric parallax and proper motion. HARPS at the ESO 3.6m telescope was also used to measure the system's radial velocity over 2 years. Based on trigonometric-parallax, proper-motion and radial-velocity measurements, we re-analyzed the membership of TWA22AB of the young, nearby associations TW Hydrae, β Pictoris and Tucana–Horologium.
doi:10.1017/s1743921309992006 fatcat:kmtkwrhzkjde5a3p2gy7xukz4i