New WTTS in the Chamaeleon complex (Alcala+ 1997)

Details New WTTS in the Chamaeleon complex (Alcala+ 1997) New WTTS in the Chamaeleon complex (Alcala+ 1997)

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..33190184a&link_type=abstract

VizieR On-line Data Catalog: J/A+A/319/184. Originally published in: 1997A&A...319..184A

Computer Science

Stars: Pre-Main Sequence

Scientific paper

We analyse the nature of the optical counterparts of the ROSAT all-sky survey (RASS) X-ray sources identified with new weak-line T Tauri (WTTS) stars in the Chamaeleon star forming region (SFR). The new WTTS are distributed throughout the whole SFR, while the classical T Tauri stars (CTTS) are found only in the cloud cores. Adopting a distance of 150pc we derive the stellar parameters and place the new WTTS in the HR diagram. By comparison with theoretical pre-main sequence (PMS) evolutionary tracks, we find masses in the range of 0.2-2.5M&sun; and ages from a few 105yr to 5x107yr. Many of the youngest WTTS are located far away from the main Chamaeleon dark clouds. (2 data files).

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