Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.223..170k&link_type=abstract
Astrophysics and Space Science, Vol. 223, No. 1 - 2, p. 170
Astronomy and Astrophysics
Astrophysics
Star Formation
Scientific paper
Processes of star formation in interstellar and primordial clouds are discussed and it is shown that the minimum mass of a star, in general, is smaller than the minimum hydrogen burning mass of approximately 0.08MSun. Arguments are presented to show that the minimum mass of a star may have a numerical value as low as 0.001MSun. It is also shown that Jupiter, with a mass of 0.001MSun, is not a star. Jupiter was formed by processes which involve the accumulation of dust in the vicinity of a star. The stars, on the other hand, are formed by instabilities in gaseous clouds and do not possess any solid cores at the time of formation. Observational data on the luminous and dark objects in the mass range 0.001MSun-0.08MSun are discussed and comments are also made on the nature of the dark objects recently discovered by the microlensing technique. It appears likely that the reported microlensing events were caused by degenerate stars (black dwarfs) of very low mass (M Sun).
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