Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.277..945t&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 277, Issue 3, pp. 945-958.
Astronomy and Astrophysics
Astronomy
236
Supernovae: General, Galaxies: Abundances, Galaxies: Evolution, Magellanic Clouds
Scientific paper
The predicted nucleosynthesis products of Type Ia and Type II supernovae are combined with various parameter ratios and compared with the solar abundances of heavy elements and their isotopes, and also with the abundances of heavy elements in the LMC and SMC. Aided by a reasonable model of galactic chemical evolution, the ratio of the total numbers (of all time) of Type Ia to Type II supernovae that best reproduces the observed abundances is determined to be N_Ia/N_II=0.15 for the Galaxy, in agreement with current observations. For the MCs, however, this ratio is larger than that for the Galaxy, yielding N_Ia/N_II=0.2-0.3. We discuss several possible star formation history scenarios that may account for such an enhanced frequency of Type Ia supernovae in the MCs.
Hashimoto Makoto
Nomoto Ken
Thielemann Friederich-Karl
Tsujimoto Takuji
Yanagida Shintarou
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