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Membership status of TWA22AB

  • Ramachrisna Teixeira (a1), Christine Ducourant (a2), Gael Chauvin (a3), Alberto G. O. Krone–Martins (a1), Mickael Bonnefoy (a3) and Inseok Song (a4)...

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 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.

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References

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Membership status of TWA22AB

  • Ramachrisna Teixeira (a1), Christine Ducourant (a2), Gael Chauvin (a3), Alberto G. O. Krone–Martins (a1), Mickael Bonnefoy (a3) and Inseok Song (a4)...

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