The Mass Distribution of sdB and sd0 Stars

摘要：

We presented full evolutionary calculations for hot subdwarfs in a wide mass range (0.35 to 1.4 Mo)at various metallicities (i.e. 0.001, 0.02, 0.04, 0.06). From the calculations, we obatained a mass-luminnosity relation, which is finally converted into a gravity-temperature-mass relation. We study the masses of some observed (ESO supernova la progenitor survey) hot subdwarfs from the gravity-temperature-mass relation. Our study shows that most of subdwarf B stars have masses ranging from 0.425 to 0.525 Mo, while subdwarf O stars are within 0.625 ～ 0.675 Mo.

关键词： stellar mass stellar subdwarf

作者: X. F. zhang X. Chen Z. Han

作者单位: National AstronomicaL Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, National AstronomicaL Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011,

会议类型: 国际会议

会议名称: The 10th Asian-Pacific Regional International Astronomical Union Meeting(第十届亚洲及太平洋地区天文学大会 APRIM)

会议地点: 昆明

会议语种:英文

页码: 189-190

在线出版日期: 2008-08-03（万方平台首次上网日期，不代表论文的发表时间）