The Energy Sources and the Explosion Mechanism of Ca-rich Supernova PTF 10iuv  

作　　者：Qiu-Ping Huang Shan-Qin Wang Tao Wang Wen-Pei Gan Deng-Wang Shi Liu-Yi Wang En-Wei Liang 黄秋萍;王善钦;王涛;甘文沛;石登旺;王浏毅;梁恩维(Guangxi Key Laboratory for Relativistic Astrophysics,School of Physical Science and Technology,Guangxi University,Nanning 530004,China;Department of Astronomy,Beijing Normal University,Beijing 100875,China;Nanjing Hopes Technology Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]Guangxi Key Laboratory for Relativistic Astrophysics,School of Physical Science and Technology,Guangxi University,Nanning 530004,China [2]Department of Astronomy,Beijing Normal University,Beijing 100875,China [3]Nanjing Hopes Technology Co.,Ltd.,Nanjing 210000,China

出　　处：《Research in Astronomy and Astrophysics》2024年第9期106-118,共13页天文和天体物理学研究（英文版）

基　　金：supported by National Natural Science Foundation of China(NSFC,grant Nos.11963001,12133003,11833003,11973020(C0035736),and U1938201);supported by the Guangxi Talent Program(“Highland of Innovation Talents”)。

摘　　要：In this paper,we perform the detailed modeling for the light curves(LCs)of PTF 10iuv which is a calcium-rich(Ca-rich)supernova(SN)to constrain the physical properties of its ejecta and the energy sources,as well as the explosion mechanism.We find that the^(56)Ni model and the56Ni plus circumstellar interaction model fail to explain the LCs,while the four-element(^(56)Ni,^(48)Cr,^(52)Fe,and^(44)Ti)model can account for the LCs.The ejecta mass of PTF10iuv derived by the model(1.52_(-0.25)^(+0.34)M_(⊙))is consistent with that of the merger of a sub-Chandrasekhar mass white dwarf.The early-time LCs were mainly powered by^(56)Ni whose mass is~0.03 M_(⊙),while the contributions of^(48)Cr and^(52)Fe can be neglected.The derived^(44)Ti mass(~0.25 M_(⊙))is~1.8 times the upper limit of the derived^(44)Ti mass of Ca-rich SN 2005E.We suggest that subtracting the contributions of the host-galaxy,which are unknown,and including the flux from other long-lived elements(e.g.,^(57)Co,^(55)Fe,^(60)Co)can reduce the amount of^(44)Ti,and that this value can be regarded as an upper limit.

关 键 词：(stars:)supernovae:general (stars:)supernovae:individual(PTF 10iuv) (stars:)novae cataclysmic variables 

分 类 号：P145.3[天文地球—天体物理]