典型文献
On the Rotation Properties of a Post-explosion Helium-star Companion in Type Iax Supernovae
文献摘要：
Recent studies have suggested that type Iax supernovae (SNe Iax) are likely to result from a weak deflagration explosion of a Chandrasekhar-mass white dwarf in a binary system with a helium (He)-star companion. Assuming that most SNe Iax are produced from this scenario, in this work we extend our previous work on the three-dimensional hydrodynamical simulation of ejecta-companion interaction by taking the orbital and spin velocities of the progenitor system into account. We then follow the post-impact evolution of a surviving He-star companion by using the one-dimensional stellar evolution code MESA. We aim to investigate the post-explosion rotation properties of a He-star companion in SNe Iax. We find that the He-star companion spins down after the impact due to the angular-momentum loss and expansion caused by the mass-stripping and shock heating during the interaction. This leads to the situation where the surface rotational speed of the surviving companion can drop to one-third of its pre-explosion value when it expands to a maximum radius a few years after the impact. Subsequently, the star shrinks and spins up again once the deposited energy is released. This spin-switching feature of the surviving He-star companions of SNe Iax may be useful for the identification of such objects in future observations.
文献关键词：
中图分类号：
作者姓名：
Yaotian Zeng;Zheng-Wei Liu;Xiangcun Meng;Zhanwen Han
作者机构：
Yunnan Observatories,Chinese Academy of Sciences(CAS),Kunming 650216,China;Key Laboratory for the Structure and Evolution of Celestial Objects,CAS,Kunming 650216,China;University of Chinese Academy of Sciences,Beijing 100049,China;Center for Astronomical Mega-Science,CAS,Beijing 100101,China
文献出处：
引用格式：
[1]Yaotian Zeng;Zheng-Wei Liu;Xiangcun Meng;Zhanwen Han-.On the Rotation Properties of a Post-explosion Helium-star Companion in Type Iax Supernovae)[J].天文和天体物理学研究,2022(07):99-108
A类：
Iax,Supernovae,supernovae,SNe,Chandrasekhar,companions
B类：
On,Rotation,Properties,Post,explosion,Helium,star,Companion,Type,Recent,studies,have,suggested,that,type,are,likely,result,from,weak,deflagration,mass,white,dwarf,binary,system,helium,Assuming,most,produced,this,scenario,work,extend,our,previous,three,dimensional,hydrodynamical,simulation,ejecta,interaction,by,taking,orbital,velocities,progenitor,into,account,We,then,follow,post,impact,evolution,surviving,using,one,stellar,code,MESA,aim,investigate,properties,find,spins,down,after,due,angular,momentum,loss,expansion,caused,stripping,shock,heating,during,This,leads,situation,where,surface,rotational,speed,can,drop,third,its,value,when,expands,maximum,radius,few,years,Subsequently,shrinks,again,once,deposited,energy,released,switching,feature,may,be,useful,identification,such,objects,future,observations
AB值：
0.526671
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