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Search for young low-mass stars in a ROSAT selected sample south of the Taurus-Auriga molecular clouds | | A. Magazzu
; E. L. Martin
; M. F. Sterzik
; R. Neuhaeuser
; E. Covino
; J.M. Alcala
; | | Date: |
19 Dec 1996 | | Journal: | Astron.Astrophys.Suppl.Ser. 124 (1997) 449 | | Subject: | astro-ph | | Abstract: | We present results of intermediate resolution spectroscopy of 131 optical counterparts to 115 ROSAT All-Sky Survey X-ray sources south of the Taurus-Auriga dark cloud complex. These objects have been selected as candidate young stars from a total of 1084 ROSAT sources in a about 300 square degree area. We identify 30 objects as low-mass PMS stars on the basis of the Li 6708 doublet in their spectrum, a signature of their young age. All these stars have a spectral type later than F7 and show spectral characteristics typical of weak-line and post-T Tauri stars. The presence of young objects several parsecs away from the regions of ongoing star formation is discussed in the light of the current models of T Tauri dispersal. | | Source: | arXiv, astro-ph/9612193 | | Services: | Forum | Review | PDF | Favorites | |
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