天文学进展2023，Vol.41Issue(4)：518-528,11.DOI:10.3969/j.issn.1000-8349.2023.04.04
稳定物质转移通道形成的极小质量白矮星
Formation of Extremely Low Mass White Dwarf Binaries via a Stable Mass Transfer Channel
摘要
Abstract
Extremely low mass white dwarf(ELM WD)binaries are important for studies of binary evolution,common envelope,AM CVn binaries and asteroseismology.Due to their short orbital periods,they are also important gravitational wave sources.However,their formation and evolution is not well understood.By using a newly suggested magnetic braking prescription,modeling the formation and evolution of ELM WD binaries via a stable mass transfer channel.Research presents the initial binary parameter space for the formation of ELM WD binaries and find the He WD masses in these binaries are(0.11～0.21)M⊙.In addition,research finds that some extremely low mass white dwarf binaries can evolve into AM CVn binaries within the Universe age and these binaries have He WD masses of(0.14～0.16)M⊙.Research also finds that the gravitational wave signal from these binaries can be detected by the space-borne gravitational wave observatories,such as LISA,TianQin,TaiJi.Finally research also discusses the impact of different material accumulation efficiencies on the evolution results of the same binary system,and it finds that it not only significantly affects the final mass of the main star,but also has little impact on the donor star and the evolution process of binary system.关键词
白矮星/密近双星/AM CVn双星/引力波Key words
white dwarf/close binary/AM CVn binary/gravitational wave分类
天文与地球科学引用本文复制引用
刘广畅,陈海亮..稳定物质转移通道形成的极小质量白矮星[J].天文学进展,2023,41(4):518-528,11.基金项目
国家自然科学基金(12073071) （12073071）
云南省基础研究项目(202001AT070058,202101AW070003) （202001AT070058,202101AW070003）
