天文学进展2025，Vol.43Issue(1)：114-128,15.DOI:10.3969/j.issn.1000-8349.2025.01.07
利用BSE算法对B型热亚矮星的研究
Study of Hot Subdwarf-B Stars through the BSE Algorithm
摘要
Abstract
Hot subdwarf-B stars are generally believed to be formed through binary in-teractions,and play an important role in studying the history of binary evolution.By modifying the fast binary evolution algorithm,the stable Roche lobe overflow,common-envelope ejection,and double helium white dwarfs merger channels for the formation of hot subdwarf-B stars in binary systems are studied.Meanwhile,the parameter space for producing hot subdwarf-B stars is provided by calculating 42 sets of binary systems with different initial parameters.The model 17 in this work can roughly reproduce the orbital periods of hot subdwarf-B stars with tight/wide orbits.In addition,the mass distributions of hot subdwarf-B stars formed through the stable Roche lobe overflow and common-envelope ejection channels have sharp peaks at 0.40∼0.50 M⊙,while the double helium white dwarfs merger channels have a mass peak at 0.50∼0.60 M⊙.The simulated mass distributions are generally consistent with the previous theoretical predictions and observations.Therefore,the model 17 is considered to be the best set in all of 42 models.关键词
B型热亚矮星/洛希瓣/双星Key words
hot subdwarf-B star/Roche lobe/binary分类
天文学引用本文复制引用
王小刚,张奉辉..利用BSE算法对B型热亚矮星的研究[J].天文学进展,2025,43(1):114-128,15.基金项目
国家自然科学基金(11973081) （11973081）
