论文标题
巨大的明星垂死的呼吸：脉动红色超级巨人及其产生的IIP超新星
A Massive Star's Dying Breaths: Pulsating Red Supergiants and Their Resulting Type IIP Supernovae
论文作者
论文摘要
巨大的恒星经历基本模式和首次过时的径向搏动，其周期为100-1000天，作为红色超级巨人（RSG）。在很大的幅度下，这些脉动实质上改变了外部包膜的密度结构，即从这些$ M> 9m_ \ odot $ start的最终核心崩溃中遇到的外部冲击波遇到。使用模块进行恒星天体物理学（MESA）的实验，我们使用MSA+Stella对RSG信封中的基本模式和首次过时脉动的影响进行建模。我们发现，在基本模式搏动的情况下，SN高原可观察的可观察力，例如第50天的光度，$ l_ {50} $，时间集成的电击能量$ et $和高原持续时间$ t _ {\ rm p} $与径向尺度相一致，即径向尺度一致，考虑爆炸的爆炸爆炸。也就是说，脉动的大多数效果与爆炸时大小不同的恒星所期望的行为一致。但是，在泛音脉动的情况下，拉格朗日位移不是单调的。因此，在这种情况下，在不同时间过度明亮或微弱的SN发射反映了SN光球附近的发射区域的不足或过度密度的结构。
Massive stars undergo fundamental-mode and first-overtone radial pulsations with periods of 100-1000 days as Red Supergiants (RSGs). At large amplitudes, these pulsations substantially modify the outer envelope's density structure encountered by the outgoing shock wave from the eventual core collapse of these $M>9M_\odot$ stars. Using Modules for Experiments in Stellar Astrophysics (MESA), we model the effects of fundamental-mode and first-overtone pulsations in the RSG envelopes, and the resulting Type IIP supernovae (SNe) using MESA+STELLA. We find that, in the case of fundamental mode pulsations, SN plateau observables such as the luminosity at day 50, $L_{50}$, time-integrated shock energy $ET$, and plateau duration $t_{\rm p}$ are consistent with radial scalings derived considering explosions of non-pulsating stars. Namely, most of the effect of the pulsation is consistent with the behavior expected for a star of a different size at the time of explosion. However, in the case of overtone pulsations, the Lagrangian displacement is not monotonic. Therefore, in such cases, excessively bright or faint SN emission at different times reflects the underdense or overdense structure of the emitting region near the SN photosphere.
