Possible models for the Type Ia supernova 1990N
Possible models for the Type Ia supernova 1990N
复制标题
Ia 型超新星 1990N 的可能模型
DOI:
10.1086/186281
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发表时间:
1992
期刊:
影响因子:
--
通讯作者:
Friedrich
中科院分区:
文献类型:
--
作者:
T. Shigeyama;K. Nomoto;H. Yamaoka;Friedrich
Possible interpretations of new spectral and photometric features of Type Ia supernova 1990N with carbon deflagration/detonation models are presented. To explain the presence of Si and Ca at high expansion velocities in SN 1990N, we suggest four possible models, among which is a carbon detonation in a white dwarf with a mass ∼1 M ⊙ . The slow rise of the light curve of SN 1990N can be reproduced by both the deflagration and detonation models if the optical opacity is somewhat larger than that previously adopted