Mass loss and evolution of hot massive stars

摘要：

We discuss the role of mass loss for the evolution of the most massive stars,high-lighting the role of the predicted bi-stability jump that might be relevant for the evolution of rotational velocities during or just after the main sequence. This mechanism is also proposed as an explanation for the mass-loss variations seen in the winds from Luminous Blue Variables (LBVs). These might be relevant for the quasi-sinusoidal modulations seen in a number of recent transitional supernovae (SNe),as well as for the double-throughed absorption profile recently discovered in the Hα line of SN 2005gj. Finally,we discuss the role of metallicity via the Z-dependent character of their winds,during both the initial and final (Wolf-Rayet) phases of evolution,with implications for the angular momentum evolution of the progenitor stars of long gamma-ray bursts (GRBs).

关键词： Stars:winds stars:mass loss stars:supergiants stars:rotation stars:supernovae

作者: Jorick S.Vink

作者单位: Armagh Observatory,College Hill,Armagh,BT61 9DG,Northern Ireland,United Kingdom

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: 271-282

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）