Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...359..181w&link_type=abstract
Astronomy and Astrophysics, v.359, p.181-190 (2000)
Astronomy and Astrophysics
Astrophysics
42
Stars: Kinematics, Stars: Pre-Main Sequence, Stars: Rotation, X-Rays: Stars, Galaxy: Open Clusters And Associations: Individual: Golud Belt
Scientific paper
In recent years, large numbers of lithium-rich stars were discovered near several nearby star forming regions (SFRs). We present a detailed study of those stars discovered in and near the central region of the Taurus-Auriga T Tauri association, based on high-resolution echelle spectroscopy and proper motion data. We find that about 60 per cent of our sample can be regarded as pre-main sequence (PMS) stars, while the remaining stars likely are foreground zero-age main sequence (ZAMS) stars. We conclude that the PMS stars are likely associated with the Taurus-Auriga SFR, while the ZAMS stars may represent a population of somewhat older Gould Belt stars. The fraction of ZAMS stars in the Taurus-Auriga sample studied in this work is larger than in a similar sample in the Lupus SFR, and we argue that this may be explained by the spatial structure of the Gould Belt and the Sun's location within it. Based on observations obtained at Observatoire de Haute Provence. Some of the observations reported here were obtained with the Multiple Mirror Telescope, a joint facility of the Smithsonian Institution and the University of Arizona.
Allain S. .
Bouvier Jerome
Covino Elvira
Frink Sabine
Krautter Joachim
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