由MiMeS合作发现的两颗磁性PDKEEPAAA星的混合
Mixing in two magnetic OB stars discovered by the MiMeS collaboration
摘要:
最近的观测和理论论证表明,磁性OB星可能比它们的非磁性类似物遭受更多的混合。我们提出了NLTE丰度研究的结果,揭示了MiMeS项目(NGC2244 #201和HD 57682)发现的两颗磁星表面缺乏CN循环材料。因此,强磁场的存在并不是主序星OB深层混合的充分条件。
英文摘要:
Recent observational and theoretical arguments suggest that magnetic OB stars may suffer more mixing than their non magnetic analogs. We present the results of an NLTE abundance study revealing a lack of CN-cycled material at the surface of two magnetic stars discovered by the MiMeS project (NGC2244 #201 and HD 57682). The existence of a strong magnetic field is therefore not a sufficient condition for deep mixing in main-sequence OB stars.
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