Physics
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc..145a&link_type=abstract
Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam
Physics
7
Scientific paper
The past decade has witnessed significant advances in our observational understanding of the earliest stages of low-mass star formation. The advent of sensitive receivers on large (sub)millimeter radio telescopes led to the identification of young protostars at the beginning of the main accretion phase (`Class 0' objects), and made it possible to probe the inner density structure of pre-stellar cloud cores. More recently, results have been obtained on the outer density structure of isolated pre-stellar cores and on the mass distribution of pre-collapse condensations in star-forming clusters, through mid-IR absorption measurements and wide-field submm continuum imaging, respectively. These new results, summarized here, suggest that stars are generally built from finite reservoirs of mass and that the stellar initial mass function (IMF) is at least partly determined by fragmentation at the pre-stellar stage of star formation.
Andre Pascal
Bacmann Aurore
Belloche Arnaud
Motte Frederique
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