The effect of aspherical stellar wind of giant stars on the symbiotic channel of Type Ia supernovae
The effect of aspherical stellar wind of giant stars on the symbiotic channel of Type Ia supernovae
复制标题
巨星非球面星风对Ia型超新星共生通道的影响
DOI：
10.1093/mnras/stab676
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发表时间：
2021-02
影响因子：
4.8
通讯作者：
Bo Wang
中科院分区：
文献类型：
--
作者：
Chengyuan Wu;Dongdong Liu;Xiaofeng Wang;Bo Wang
摘要。解释Ia型超新星爆炸的祖先系统仍在争论中。共生通道是一种可能的祖先场景，在这些系统中的WD通过风吸积它们的红巨星同伴而增加质量。巨星在共生系统中的质量损失过程可以产生大量的星周介质（CSM），探测SN喷出物与CSM之间的相互作用信号可以作为区分不同祖先模型的理想方法。然而，共生系统周围的CSM的密度分布和几何结构仍然是高度不确定的。通过假设双星相互作用产生的潮汐力矩会增加红巨星的质量损失率，并导致星风向赤道面集中，我们给出了一种估算CSM密度和偏离球对称度的简化方法.利用恒星演化程序梅萨对共生系统的双星演化进行了计算，得到了产生Ia超新星的参数空间。我们发现，超新星Ia可能起源于与大质量碳氧白色矮星（COWD）共生的系统，而红巨星向WD方向的星风半张角随双星演化而变化，导致周围CSM形成不同的几何结构。在未来的光谱偏振观测中，可以检查喷射物-CSM相互作用的相应性质，从中可以发现Ia超新星与其祖先系统之间的星周环境之间的额外关系。
ABSTRACT. The progenitor systems accounting for explosions of Type Ia supernovae (SNe Ia) is still under debate. Symbiotic channel is one of the possible progenitor scenarios, in which the WDs in these systems increase in mass through wind accretion from their red giant companions. The mass-loss processes of the giants in the symbiotic systems could produce the amount of circumstellar medium (CSM), and detections of interaction signals between SN ejecta and CSM can be used as an ideal way to distinguish different progenitor models. However, the density distribution and geometric structure of the CSM around the symbiotic systems remain highly uncertain. By assuming that the tidal torque from binary interaction can increase the mass-loss rate of the red giant and cause the stellar wind concentrate towards the equatorial plane, we provide a simplified method to estimate the density and the degree of deviation from spherical symmetry for the CSM. Based on the calculations of the binary evolutions of symbiotic systems using stellar evolution code mesa, we obtained the parameter space for producing SNe Ia. We found that SNe Ia could originate from symbiotic systems with massive carbon-oxygen white dwarfs (CO WDs), while the half-opening angle of the stellar wind from red giant towards the WD varies with the binary evolution, resulting in the formation of surrounding CSM with different geometric structures. The corresponding properties of ejecta–CSM interactions may be examined by spectropolarimetry observations in the future, from which one may find an additional relationship between circumstellar environment of SNe Ia and their progenitor systems.
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影响因子：
4.8
作者：
N. Soker
通讯作者：
N. Soker
DOI：
10.3847/1538-4357/ab6dc6
发表时间：
2020-01
期刊：
The Astrophysical Journal
影响因子：
--
作者：
P. Lundqvist;E. Kundu;M. Pérez-Torres;S. Ryder;C. Björnsson;J. Moldón;M. Argo;R. Beswick;A. Alberdi;E. Kool
通讯作者：
P. Lundqvist;E. Kundu;M. Pérez-Torres;S. Ryder;C. Björnsson;J. Moldón;M. Argo;R. Beswick;A. Alberdi;E. Kool
DOI：
10.1086/146963
发表时间：
1960-11
期刊：
The Astrophysical Journal
影响因子：
--
作者：
F. Hoyle;W. Fowler
通讯作者：
F. Hoyle;W. Fowler
DOI：
10.1016/j.newar.2020.101535
发表时间：
2019-12
期刊：
arXiv: High Energy Astrophysical Phenomena
影响因子：
--
作者：
N. Soker
通讯作者：
N. Soker
影响因子：
6.5
作者：
C. Abate;O. Pols;R. Izzard;S. Mohamed;S. D. Mink
通讯作者：
C. Abate;O. Pols;R. Izzard;S. Mohamed;S. D. Mink