New T Tauri stars in the vicinity of TW Hydrae

Details New T Tauri stars in the vicinity of TW Hydrae New T Tauri stars in the vicinity of TW Hydrae

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...346l..41s&link_type=abstract

Astronomy and Astrophysics, v.346, p.L41-L44 (1999)

Astronomy and Astrophysics

Astrophysics

52

Stars: Flare, Stars: Pre-Main Sequence, X-Rays: Stars

Scientific paper

We report the discovery of four weak-line T Tauri star candidates in the vicinity of the TW Hydrae association, the closest known region of recent star formation. Three stars are probably association members. They exhibit high Lithium abundances, M spectral types, and a high level of chromospheric and coronal activity. Two of them form a binary system. They also share a consistent radial velocity with previously known members of the association. A fourth candidate T Tauri star is of earlier spectral type, has a weaker Lithium absorption feature, and a different radial velocity, and is probably located in the background of the association. Our findings support the idea that the isolated T Tauri stars in that region belong to a physical association around TW Hydrae. Based on observations obtained at the European Southern Observatory, La Silla, Chile under proposal number 60.C-0170

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