Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.2904a&link_type=abstract
American Astronomical Society Meeting 205, #29.04; Bulletin of the American Astronomical Society, Vol. 36, p.1394
Astronomy and Astrophysics
Astronomy
Scientific paper
I performed a comprehensive study of the mass distribution of brown dwarfs, as companions, in young clusters and the field. Using low-mass star and brown dwarf evolutionary models, with assumptions on the mass and age distributions of brown dwarfs, I produced artificial luminosity functions for comparison to data. I compiled data from the literature on luminosity functions for young clusters and the field and surveys for companions. I have also observed a large sample of late-M and L dwarfs for companions. None were found. I developed a highly versatile statistical analysis method using a Bayesian approach to quantitatively compare my models to the data. My results demonstrate that the current data are not enough to constrain the mass distribution of brown dwarfs. Furthermore, I show that the companion distribution of brown dwarfs is fundamentally different from that of higher mass stars.
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