Massive star evolution:from the early to the present day Universe

摘要：

Mass loss and axial rotation are playing key roles in shaping the evolution of massive stars. They affect the tracks in the HR diagram,the lifetimes,the surface abundances,the hardness of the radiation field,the chemical yields,the presupernova status,the nature of the remnant,the mechanical energy released in the interstellar medium,etc... In this paper,after recalling a few characteristics of mass loss and rotation,we review the effects of these two processes at different metallicities. Rotation probably has its most important effects at low metallicities,while mass loss and rotation deeply affect the evolution of massive stars at solar and higher than solar metallicities.

关键词： stars:abundances early-type evolution mass loss emission-line Be rotation

作者: Georges Meynet Sylvia Ekstr(o)m Cyril Georgy André Maeder Raphael Hirschi

作者单位: Observatory of Geneva University,Switzerland EPSAM,University of Keele,UK

会议类型: 国际会议

会议名称: The 252th Symposium of the International Astronomical Union(国际天文学联合会第252届研讨会)

会议地点: 海南三亚

会议语种:英文

页码: 317-327

在线出版日期: 2008-04-06（万方平台首次上网日期，不代表论文的发表时间）