Thorne-Zytkow Objects观测和研究进展  

The Observation and Research Progress on Thorne-Zytkow Objects

作　　者：刘剑宇 张帆[1] LIU Jian-yu;ZHANG Fan(Department of Astronomy,Beijing Normal University,Beijing 100875,China)

机构地区：[1]北京师范大学天文系,北京100875

出　　处：《天文学进展》2021年第4期472-489,共18页Progress In Astronomy

基　　金：国家自然科学基金(12073005,12021003,11503003,11633001);北京师范大学交叉学科平台项目。

摘　　要：近期,引力波探测揭示了诸多超乎意料的双星并合事件,显然对于“双星演化”这个最基础的天体物理问题的理解仍然有很大欠缺。弥补这个缺陷的努力不能仅局限于依赖双星并合这样的稀缺瞬时事件,必须同时寻找其他独立的、更适合长时间观测的线索和现象。Thorne-Z ytkow Objects(简称TZO)作为假想的、在红巨星或红超巨星内部沉入一个衰退的中子核的奇妙天体,即是能够帮助理解双星演化的一个绝佳研究对象。首先从理论上统述大质量TZO的结构与演化;然后主要介绍大质量TZO在观测上的相关发现,尤其是在小麦哲伦星云中的HV2112;最后主要对当前的相关工作进行总结和展望。Recent gravitational wave detection efforts have yielded a variety of unexpected binary merger event types,revealing our ignorance regarding one of the more fundamental pillars of astrophysics-the binary evolution process.To make up for this shortfall,we have to not only rely on such rare transient events as binary mergers,but also other independent,more persistently observable inspirations.We introduce one such candidate in this review,namely the Thorne-Zytkow Objects(TZO),that are hypothetical celestial bodies born when neutron stars sink into the centers of red giants and/or red supergiants,whose properties and inferred formation history would undoubtedly clue us in on the vitals of the progenitor binary.First,focus on the theoretical overview of the structure and evolution of massive TZO;then focus on the observational findings of massive TZO,especially HV2112 in the Small Magellanic Cloud;finally,summarize current related work.

关 键 词：Thorne-Zytkow Objects 中子星 致密双星演化 红巨星 红超巨星 

分 类 号：P153[天文地球—天文学]