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arXiv 2102.07882astro-ph.SRastro-ph.HE
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通过超新星射电性质约束红超巨星质量损失处方

Constraining red supergiant mass-loss prescriptions through supernova radio properties

Takashi J. Moriya

摘要:

超新星的射电性质强烈地依赖于其星周环境,是研究超新星前身星质量损失的重要探针。最近,在无线电的核心坍缩超新星观测已经组装和核心坍缩超新星在8.4 GHz的上升时间和峰值光度分布的估计。本文利用射电II型超新星的上升时间和峰值光度分布,对红超巨星的质量损失公式进行了约束。我们采用de Jager和van Loon的质量损失率,计算了红超巨星的上升时间和峰值亮度分布,并与观测结果进行了比较。我们发现,德雅格质量损失率解释了广泛传播的无线电上升时间和峰值亮度分布的II型超新星,而范隆质量损失率预测一个相对狭窄的范围内的上升时间和峰值亮度。我们的结论是,红超巨星的质量损失处方应该有很强的依赖于光度的德耶格质量损失率再现广泛传播的分布的上升时间和峰值亮度在无线电中观察到的II型超新星。

英文摘要:

Supernova properties in radio strongly depend on their circumstellar environment and they are an important probe to investigate the mass loss of supernova progenitors. Recently, core-collapse supernova observations in radio have been assembled and the rise time and peak luminosity distribution of core-collapse supernovae at 8.4 GHz has been estimated. In this paper, we constrain the mass-loss prescriptions for red supergiants by using the rise time and peak luminosity distribution of Type II supernovae in radio. We take the de Jager and van Loon mass-loss rates for red supergiants, calculate the rise time and peak luminosity distribution based on them, and compare the results with the observed distribution. We found that the de Jager mass-loss rate explains the widely spread radio rise time and peak luminosity distribution of Type II supernovae well, while the van Loon mass-loss rate predicts a relatively narrow range for the rise time and peak luminosity. We conclude that the mass-loss prescriptions of red supergiants should have strong dependence on the luminosity as in the de Jager mass-loss rate to reproduce the widely spread distribution of the rise time and peak luminosity in radio observed in Type II supernovae.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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