Distribution Of Pre-main-sequence Stars In Taurus

Details Distribution Of Pre-main-sequence Stars In Taurus Distribution Of Pre-main-sequence Stars In Taurus

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1203l&link_type=abstract

American Astronomical Society, AAS Meeting #211, #12.03; Bulletin of the American Astronomical Society, Vol. 39, p.750

Astronomy and Astrophysics

Astronomy

Scientific paper

The proximity of Taurus allows for a clear look of the relations between young stars and their natal gas clouds. The combination of current surveys provide catalogue of pre-main-sequence stars complete to a fraction of solar mass and gas to Av 0.2. The distribution of pre-main sequence stars generally follows that of the dense gas, although a fraction of the older category (likely T-tauri stars) are located in regions with only diffuse gas emission. The total star formation efficiency (SFE) is relatively low at between 0.4% and 2%, depending on the definition of epoch. Assuming most pre-main-sequence stars have been formed in within the past 3 Myr, then the mass conversion rate from molecular to stellar is 2e-9 solar mass per year per molecular mass, which is consistent with the global conversion rate through out the Milky way. A significant jump in stellar surface density occurs around N(H2) = 5.5x1021 cm-2, roughly, Av=5.5, suggestive of an extinction threshold for star formation.

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