Radiation-hydrodynamics simulations of surface convection in low-mass stars:connections to stellar structure and asteroseismology

摘要：

Radiation-hydrodynamical simulations of surface convection in low-mass stars can be exploited to derive estimates of i) the efficiency of the convective energy transport in the stellar surface layers; ii) the convection-related photometric micro-variability. We comment on the universality of the mixing-length parameter,and point out potential pitfalls in the process of its calibration which may be in part responsible for the contradictory findings about its variability across the Hertzsprung-Russell digramme. We further comment on the modelling of the photometric micro-variability in HD 49933-one of the first main COROT targets.

关键词： convection hydrodynamics stars:atmospheres stars:evolution stars:oscillations

作者: Hans-G.Ludwig Elisabetta Caffau A.Ku(c)inskas

作者单位: Observatoire de Paris-Meudon,GEPI,92195 Meudon Cedex,France;CIFIST Marie Curie Excellence Team,Obser Observatoire de Paris-Meudon,GEPI,92195 Meudon Cedex,France Institute of Theoretical Physics and Astronomy,Gostauto 12,Vilnius 01108,Lithuania

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: 75-82

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）