The rate of stellar collapses in the galaxy

Details The rate of stellar collapses in the galaxy The rate of stellar collapses in the galaxy

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343..713r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 343, Aug. 15, 1989, p. 713-717.

Astronomy and Astrophysics

Astrophysics

35

Frequency Distribution, Gravitational Collapse, Milky Way Galaxy, Stellar Evolution, Supernovae, Stellar Luminosity, Stellar Mass

Scientific paper

The expected rate of stellar collapses is evaluated by integrating the initial mass function for mass greater than five solar masses over the distribution of stars in the thin disk. Rates of 1.0 + 1.5 or - 0.6 stellar collapses per century for assumed supernova progenitor masses greater than 8 solar masses and 5 solar masses, respectively. These values are consistent with the observed Galactic supernova rate of 2.2 + or - 1.3 per century. They disagree, however, with a previous estimate of roughly 11 + 5 or - 2 stellar collapses per century obtained by Bahcall and Piran (1983). The reasons for this discrepancy are explored in the text.

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