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arXiv 1607.02582astro-ph.GA
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盘星系中棒对超新星径向分布的影响

The impact of bars on the radial distribution of supernovae in disc galaxies

A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan, G. A. Mamon, D. Kunth, A. R. Petrosian, V. Adibekyan, L. S. Aramyan, M. Turatto

摘要:

本文分析了棒对不同形态的主星系星盘中不同类型超新星(SNe)径向分布的影响。我们发现,在Sa-Sbc星系中,核心坍缩(core-collapse,CC)SNe的径向分布与无棒星系中的不一致,而SNe Ia的径向分布没有显著差异。同时,在Sc-Sm星系中,这两种SNe的径向分布不受棒的影响。我们建议,塑造Ia型和CC SNe的分布的额外机制可以解释的框架内,大量的恒星形成的径向范围内扫过强酒吧,特别是在早期型螺旋形的实质性抑制。无棒Sa-Sbc星系中的CC SNe的径向分布更集中,与无棒Sc-Sm宿主中的分布不一致,而无棒星系中的SNe Ia的分布不受宿主形态的影响。这些结果可以用大质量恒星在早型和晚型旋涡盘中的不同分布来解释。

英文摘要:

We present an analysis of the impact of bars on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with various morphologies. We find that in Sa-Sbc galaxies, the radial distribution of core-collapse (CC) SNe in barred hosts is inconsistent with that in unbarred ones, while the distributions of SNe Ia are not significantly different. At the same time, the radial distributions of both types of SNe in Sc-Sm galaxies are not affected by bars. We propose that the additional mechanism shaping the distributions of Type Ia and CC SNe can be explained within the framework of substantial suppression of massive star formation in the radial range swept by strong bars, particularly in early-type spirals. The radial distribution of CC SNe in unbarred Sa-Sbc galaxies is more centrally peaked and inconsistent with that in unbarred Sc-Sm hosts, while the distribution of SNe Ia in unbarred galaxies is not affected by host morphology. These results can be explained by the distinct distributions of massive stars in the discs of early-and late-type spirals.

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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