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arXiv 0704.2387astro-ph
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超新星祖先与H-α辐射空间相关性的限制

Constraints on supernova progenitors from spatial correlations with H-alpha emission

J. P. Anderson, P. A. James, M. Salaris, S. M. Percival

摘要:

我们试图限制所有超新星类型的祖先,通过历史超新星的位置与最近的恒星形成的相关性,跟踪H-α发射。通过像素统计,我们发现SNII人口的很大一部分与当前的恒星形成没有任何关联,我们将其归因于这些祖先的“失控”部分。SNIb/c群体准确地追踪了H-α发射,一些人认为SNIc祖细胞比SNIb显示出更高程度的相关性,这表明前者的祖细胞质量更高。总的来说,SNIa星族与HII区的位置只有微弱的相关性,但有多达一半的星族可能与年轻的恒星星族有关。

英文摘要:

We have attempted to constrain the progenitors of all supernova types, through correlations of the positions of historical supernovae with recent star formation, as traced by H-alpha emission. Through pixel statistics we have found that a large fraction of the SNII population do not show any association with current star formation, which we put down to a 'runaway' fraction of these progenitors. The SNIb/c population accurately traces the H-alpha emission, with some suggestion that the SNIc progenitors show a higher degree of correlation than the SNIb, suggesting higher mass progenitors for the former. Overall the SNIa population only show a weak correlation to the positions of HII regions, but as many as a half may be associated with a young stellar population.

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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