The delay time distribution of supernovae from integral-field spectroscopy of nearby galaxies
The delay time distribution of supernovae from integral-field spectroscopy of nearby galaxies
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DOI：
10.1093/mnras/staa3876
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发表时间：
2020-12
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通讯作者：
Asier Castrillo;Y. Ascasibar;L. Galbany;S. S'anchez;C. Badenes;Joseph P. Anderson;H. Kuncarayakti;J. Lyman;A. D'iaz
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作者：
Asier Castrillo;Y. Ascasibar;L. Galbany;S. S'anchez;C. Badenes;Joseph P. Anderson;H. Kuncarayakti;J. Lyman;A. D'iaz
约束不同超新星（SN）类型的延迟时间分布（DTD）可以揭示星系化学富集和反馈过程的时间尺度影响星系动力学，和SN祖属性。在这里，我们提出了一种方法来恢复SN DTDs的基础上积分场光谱（IFS）的主机星系。通过对102个星系中116颗超新星样本的统计分析，我们评估了Ia（73），II（28）和Ib/c（15）型超新星的不同DTD模型。我们发现Ia超新星的最佳DTD符合幂律，指数α = −1.1 ± 0.3（50%置信区间），时间延迟（从星星形成到第一个超新星）Δ = 50+100 − 3500万年（50%置信区间）。对于核心坍缩（CC）SNe，Zapartas等人（2017）单星和双星演化的DTD模型都与我们的结果一致。对于SNe II和Ib/c，我们发现与高斯DTD模型的相关性，其中σ = 82+129 −23 Myr和σ = 56+141 −9 Myr（50% C.I.）分别这一分析表明，积分场谱开辟了一个新的方式来研究SN DTD模型在本地宇宙。
Constraining the delay-time distribution (DTD) of different supernova (SN) types can shed light on the timescales of galaxy chemical enrichment and feedback processes affecting galaxy dynamics, and SN progenitor properties. Here, we present an approach to recover SN DTDs based on integral field spectroscopy (IFS) of their host galaxies. Using a statistical analysis of a sample of 116 supernovae in 102 galaxies, we evaluate different DTDmodels for SN types Ia (73), II (28) and Ib/c (15). We find the best SN Ia DTD fit to be a power law with an exponent α = −1.1 ± 0.3 (50% confidence interval), and a time delay (between star formation and the first SNe) Δ = 50+100 −35 Myr (50% C.I.). For core collapse (CC) SNe, both of the Zapartas et al. (2017) DTD models for single and binary stellar evolution are consistent with our results. For SNe II and Ib/c, we find a correlation with a Gaussian DTD model with σ = 82+129 −23 Myr and σ = 56+141 −9 Myr (50% C.I.) respectively. This analysis demonstrates that integral field spectroscopy opens a new way of studying SN DTD models in the local universe.