Title of article :
Membership status of TWA22AB
Author/Authors :
Ramachrisna Teixeira، نويسنده , , Christine Ducourant، نويسنده , , Gael Chauvin، نويسنده , , Alberto G. O. Krone Martins، نويسنده , , Mickael Bonnefoy and Inseok Song، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Abstract :
Using 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 systemʹs 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, ft Pictoris and Tucana-Horologium.
Keywords :
open clusters and associations: general , binaries: general , stars: individual (TWA22AB) , stars: distances
Journal title :
Proceedings of the International Astronomical Union
Journal title :
Proceedings of the International Astronomical Union
