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arXiv 2409.01906astro-ph.SRastro-ph.HE
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Ic型超新星的双星前身系统

Binary progenitor systems for Type Ic supernovae

Martín Solar, Michał J. Michałowski, Jakub Nadolny, Lluís Galbany, Jens Hjorth, Emmanouil Zapartas, Jesper Sollerman, Leslie Hunt, Sylvio Klose, Maciej Koprowsk… 展开作者

Martín Solar, Michał J. Michałowski, Jakub Nadolny, Lluís Galbany, Jens Hjorth, Emmanouil Zapartas, Jesper Sollerman, Leslie Hunt, Sylvio Klose, Maciej Koprowski, Aleksandra Leśniewska, Michał Małkowski, Ana M. Nicuesa Guelbenzu, Oleh Ryzhov, Sandra Savaglio, Patricia Schady, Steve Schulze, Antonio de Ugarte Postigo, Susanna D. Vergani, Darach Watson, Radosław Wróblewski

AI总结:

本文通过比较II型与Ic型超新星所处环境的分子气体密度,推断Ic型超新星前身星大多经历双星相互作用,而非单一极高质量恒星坍缩,为改进宇宙学模拟中的反馈与化学混合提供了依据。

摘要:

核心坍缩超新星是大质量恒星演化末期的爆炸。它们负责金属产生并阻止恒星形成,对星系演化具有重要影响。这些过程的细节取决于超新星前身星的性质,但尚不清楚Ic型超新星(光谱中无氢或氦线)是源自极高质量恒星(> 30倍太阳质量)的核心坍缩,还是源自双星系统中质量较小的恒星。本文表明,II型(有氢线)和Ic型超新星位于具有相似分子气体密度的环境中,因此它们的前身星具有可比的寿命和初始质量。这支持大多数Ic型超新星前身星经历双星相互作用,从而解释了氢和氦线的缺失。这一发现可以应用于数值宇宙学模拟中的亚网格方案,以改进反馈和化学混合。

英文摘要:

Core-collapse supernovae are explosions of massive stars at the end of their evolution. They are responsible for metal production and for halting star formation, having a significant impact on galaxy evolution. The details of these processes depend on the nature of supernova progenitors, but it is unclear if Type Ic supernovae (without hydrogen or helium lines in their spectra) originate from core-collapses of very massive stars (> 30 Msun) or from less massive stars in binary systems. Here we show that Type II (with hydrogen lines) and Ic supernovae are located in environments with similar molecular gas densities, therefore their progenitors have comparable lifetimes and initial masses. This supports a binary interaction for most Type Ic supernova progenitors, which explains the lack of hydrogen and helium lines. This finding can be implemented in sub-grid prescriptions in numerical cosmological simulations to improve the feedback and chemical mixing.

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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