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Title:
Low-mass helium star models for type Ib supernovae - Light curves, mixing, and nucleosynthesis
Authors:
Shigeyama, Toshikazu; Nomoto, Ken'ichi; Tsujimoto, Takuji; Hashimoto, Masa-Aki
Affiliation:
AA(Tokyo, University, Japan), AB(Tokyo, University, Japan), AC(Tokyo, University, Japan), AD(Kyushu University, Fukuoka, Japan)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 361, Sept. 20, 1990, p. L23-L27. Research supported by the Japan-U.S. Cooperative Science Program. (ApJ Homepage)
Publication Date:
09/1990
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL MODELS, HELIUM, LIGHT CURVE, NUCLEAR ASTROPHYSICS, NUCLEAR FUSION, SUPERNOVAE, ABUNDANCE, STELLAR LUMINOSITY, STELLAR MASS, TAYLOR INSTABILITY
DOI:
10.1086/185818
Bibliographic Code:
1990ApJ...361L..23S

Abstract

The applicability of theoretical models of He-star explosions to type Ib SN explosions is explored. Particular attention is given to light curves and mixing, Rayleigh-Taylor instabilities and mixing, and nucleosynthesis and the mass of Ni-56. Typical numerical results are presented in graphs, and it is concluded that the explosions of SN 1983N and SN 1983I can be accurately represented in terms of explosions of He stars with M(alpha) of 3-4 solar mass. A strong M(alpha) dependence of light-curve shape, photospheric velocity, and Ni-56 mass is found.

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