两类剥离包层超新星SN 2015ap(Ib型)和SN 2016P(Ic型)的光学观测研究
高能天体物理现象
2020-07-15 v2
摘要
我们呈现了对Ib型SN 2015ap和Ic型SN 2016P的光度和光谱研究。SN 2015ap是明亮的(M = 18.04 mag)Ib型超新星之一,而SN 2016P在Ic型超新星中处于平均值(M = 17.53 mag)。SNe 2015ap和2016P的辐射测光光变曲线建模表明,这两颗超新星均由Ni + 磁星模型驱动,其Ni质量分别为0.01 M和0.002 M,抛射物质量分别为3.75 M和4.66 M,自转周期P分别为25.8 ms和36.5 ms,磁场B分别为28.39 10 Gauss和35.3 10 Gauss。SN 2015ap的早期光谱显示出显著的He线以及由Fe络合物导致的“W”特征,而Mg II、Na I和Si II的其他谱线在SN 2015ap和2016P中均存在。星云期[O I]轮廓表明SN 2015ap中存在不对称轮廓。SN 2015ap的[O I]/[Ca II]比值和星云光谱建模暗示其前身星质量在12 20 M之间。
引用
@article{arxiv.2006.09810,
title = {Optical studies of two stripped envelope supernovae SN 2015ap (Type Ib) and SN 2016P (Type Ic)},
author = {Anjasha Gangopadhyay and Kuntal Misra and D. K. Sahu and Shan-Qin Wang and Brajesh Kumar and Long Li and G. C. Anupama and Raya Dastidar and N. Elias-Rosa and Brijesh Kumar and Mridweeka Singh and S. B. Pandey and Pankaj Sanwal and Avinash Singh and S. Srivastav and L. Tartaglia and L. Tomasella},
journal= {arXiv preprint arXiv:2006.09810},
year = {2020}
}
备注
22 pages, 21 Figures, Accepted for publication in MNRAS, The replaced version includes high resolution corner plots