Very young stars in the solar vicinity

Details Very young stars in the solar vicinity Very young stars in the solar vicinity

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop...76w&link_type=abstract

NOAO Proposal ID #1999A-0076

Physics

Scientific paper

New surveys and catalogues like the ROSAT All-Sky Survey (RASS) and the TYCHO/HIPPARCOS catalogues have opened the unprecedented opportunity to search for new stellar populations. We are interested in the population of very young (ZAMS/PMS) stars in the solar vicinity. We propose to use the Coude Feed telescope with the Coude spectrograph to obtain high-resolution spectroscopy on a sample of x-ray active, nearby stars (obtained by cross-correlating the TYCHO-catalogue with the RASS), in order to identify very young stars among them. The proposed spectroscopic observations - together with TYCHO/HIPPARCOS parallaxes and TYCHO photometry -, will allow us to determine the evolutionary status of these stars, investigate the galactic star forming history in the solar vicinity, and to cast light on the still controversial issue of the nature of the numerous weak-line T Tauri stars found recently around nearby star forming regions.

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