论文标题
剥离的envelope超新星环境的紫外线人口普查
A UV census of the environments of stripped-envelope supernovae
论文作者
论文摘要
本文报告了基于哈勃太空望远镜获得的深层紫外线图像，对41个均匀选择的剥离式超新星（SESNE）进行了环境分析。在大多数SN环境中都检测到年轻的恒星种群，并且它们的年龄是通过层次贝叶斯方法得出的。 IIB型和IB类型之间的年龄分布是无法区分的，而对于IC类型的IB类型在系统上年轻。这表明IC SN型祖细胞型较大，而IIB型和IB SNE型具有非常相似的祖细胞质量。我们的结果支持了混合包膜扫带机制，其中SESN祖细胞的氢信封通过质量不敏感过程（例如二进制相互作用）剥离，而氦信封则通过质量敏感过程剥离（例如，毕生互动后祖细胞的恒星风）。我们还提供了三种IBN SNE和两个宽线型IC SNE的祖细胞约束。所有这些结果表明，塞斯尼亚的起源中非常多样化的质量损失过程的重要性。
This paper reports an environmental analysis of 41 uniformly-selected stripped-envelope supernovae (SESNe) based on deep ultraviolet-optical images acquired by the Hubble Space Telescope. Young stellar populations are detected in most SN environments and their ages are derived with a hierarchical Bayesian approach. The age distributions are indistinguishable between Type IIb and Type Ib while that for Type Ic is systematically younger. This suggests that the Type Ic SN progenitors are more massive while the Type IIb and Type Ib SNe have very similar progenitor masses. Our result supports a hybrid envelope-stripping mechanism, in which the hydrogen envelopes of the SESN progenitors are stripped via a mass-insensitive process (e.g. binary interaction) while the helium envelopes are stripped via a mass-sensitive process (e.g. stellar wind of the post-binary interaction progenitor). We also provide progenitor constraints for three Type Ibn SNe and two broad-lined Type Ic SNe. All these results demonstrate the importance of the very diverse mass-loss processes in the origins of SESNe.
