The Stellar Population of the Lupus Dark Clouds

Details The Stellar Population of the Lupus Dark Clouds The Stellar Population of the Lupus Dark Clouds

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...18110305h&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #103.05; Bulletin of the American Astronomical Society, Vol. 24, p.1287

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of an optical and infrared study of all the young stars with detectable Hα emission in the Lupus star formation region. We use the H-R diagram to form an initial mass spectrum for the cloud which shows a peak at about 0.3M_sun. Lupus does show an excess of very low mass stars when we compare its mass distribution with that of Taurus and Chamaeleon. When we compare the ages of the Lupus sample to similar pre-main sequence stars in the Chamaeleon and Taurus clouds, the apparent stellar ``birthline'' for Lupus is lower. The differences in the stellar birthlines may be due to variations in the accretion rates onto the stars in each cloud. However, a similar result could be obtained if the star formation rate tapered off in Lupus just under 10(6) years ago.

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