论文标题
超新星从附近星系的整体场光谱中的延迟时间分布
The delay time distribution of supernovae from integral-field spectroscopy of nearby galaxies
论文作者
论文摘要
限制不同超新星（SN）类型的延迟时间分布（DTD）可以揭示出影响星系动力学以及SN祖细胞特性的星系化学富集和反馈过程的时间尺度。在这里，我们提出了一种基于其宿主星系的积分场光谱（IF）恢复SN DTD的方法。使用对102个星系中116个超新星样品样品的统计分析，我们评估了SN类型IA（73），II（28）和IB/C（15）的不同DTD模型（15）。我们发现最佳的SN IA DTD适合作为指数$α= -1.1 \ pm 0.3 $ 0.3 $（50 \％置信区间）和时间延迟（在星形形成和第一个SNE）$δ= 50^{+100^{+100} _ { - 35} 〜Myr $（50 \％c.i.）。对于核心崩溃（CC）SNE，Zapartas等人都是。 （2017）单次和二进制恒星进化的DTD模型与我们的结果一致。对于Sne II和IB/C，我们发现与高斯DTD模型的相关性，其$σ= 82^{+129} _ { - 23} 〜myr $和$σ= 56^{+141} _ { - 9} 〜myr $（50 \％\％c.i.）。该分析表明，整体场谱为研究本地宇宙中的SN DTD模型开辟了一种新的方式。
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 DTD models 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 $α= -1.1\pm 0.3$ (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.
