Possible models for the Type Ia supernova 1990N

Possible models for the Type Ia supernova 1990N
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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:
The Astrophysical Journal
影响因子:
--
通讯作者:
Friedrich
Friedrich
中科院分区:
--
文献类型:
--
作者:
T. Shigeyama;K. Nomoto;H. Yamaoka;Friedrich

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被引文献

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提出了用碳爆燃/爆轰模型对Ia型超新星1990N新的光谱和光度特征的可能解释。为了解释SN 1990N中高膨胀速度下Si和Ca的存在,我们提出了四种可能的模型,其中一种是质量为1 M⊙的白矮星中的碳爆炸。如果光学不透明度比之前采用的要大一些,那么无论是爆燃模型还是爆震模型都可以再现SN 1990N的光变曲线的缓慢上升
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