Surface convection in Population Ⅱ stars

摘要：

The initial surface abundances of Population Ⅱ stars have been altered by the interplay between convection,rotational mixing and diffusion. In particular the shallower the outer convection zone the stronger the diffusion impact. We present preliminary results on constraining the extension of the convection zones of Population Ⅱ stars thanks to 3D hydrodynamical simulations.

关键词： Convection stars:populations Ⅱ

作者: Laurent Piau Robert F.Stein

作者单位: CEA-Saclay DSM/IRFU/SAp,LOrme des Merisiers 91191 Gif-sur-Yvette France Michigan State University,Department of Physics & Astronomy East Lansing,MI 48824-2320,USA

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: 253-254

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）