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arXiv 2009.03331astro-ph.HEastro-ph.SR
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SN 2018 ijp:在致密的富氢壳层内的剥离包络星的爆炸?

SN 2018ijp: the explosion of a stripped-envelope star within a dense H-rich shell?

L. Tartaglia, J. Sollerman, C. Barbarino, F. Taddia, E. Mason, M. Berton, K. Taggart, E. C. Bellm, K. De, S. Frederick, C. Fremling, A. Gal-Yam, V. Z. Golkhou, … 展开作者

L. Tartaglia, J. Sollerman, C. Barbarino, F. Taddia, E. Mason, M. Berton, K. Taggart, E. C. Bellm, K. De, S. Frederick, C. Fremling, A. Gal-Yam, V. Z. Golkhou, M. Graham, A. Y. Q. Ho, T. Hung, S. Kaye, Y. L. Kim, R. R. Laher, F. J. Masci, D. A. Perley, M. D. Porter, D. J. Reiley, R. Riddle, B. Rusholme, M. T. Soumagnac, R. Walters

摘要:

在本文中,我们讨论了SN 2018ijp后续活动的结果,这是Zwicky瞬态设施光学瞬态调查的一部分。它的第一个光谱显示出与最大光附近的宽线Ic型超新星的相似性,而后来的光谱显示出快速膨胀的喷出物和致密的富含H的星周介质之间相互作用的强烈特征,与瞬态光度演化的第二个峰值相吻合。这种演化,以及第一个光变曲线峰值的模拟结果,表明了一种情况,即一颗剥离的恒星在致密的星周介质中爆炸。瞬态演化的两个主要阶段可以解释为第一阶段主要是放射性衰变,而后来的相互作用主导阶段,喷出物与预先存在的壳碰撞。因此,我们讨论SN 2018jp的背景下,一个大质量的恒星耗尽其外层爆炸在一个密集的富H星周介质。

英文摘要:

In this paper, we discuss the outcomes of the follow-up campaign of SN 2018ijp, discovered as part of the Zwicky Transient Facility survey for optical transients. Its first spectrum shows similarities to broad-lined Type Ic supernovae around maximum light, whereas later spectra display strong signatures of interaction between rapidly expanding ejecta and a dense H-rich circumstellar medium, coinciding with a second peak in the photometric evolution of the transient. This evolution, along with the results of modeling of the first light curve peak, suggests a scenario where a stripped star exploded within a dense circumstellar medium. The two main phases in the evolution of the transient could be interpreted as a first phase dominated by radioactive decays, and an later interaction-dominated phase where the ejecta collide with a pre-existing shell. We therefore discuss SN 2018jp within the context of a massive star depleted of its outer layers exploding within a dense H-rich circumstellar medium.

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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