Discrepancy between infrared and optical emission in some Be stars

被引：0
|
作者：
LIU Qingzhong & WEI JianyanPurple Mountain Observatory
National Astronomical Observatories
机构：
来源：
Chinese Science Bulletin | 2002年 / 18期
基金：
中国国家自然科学基金;
关键词：
Be star; emission line; near infrared excess;
D O I：
暂无
中图分类号：
P14 [天体物理学];
学科分类号：
070401 ;
摘要：
An expanding ring model is put forward to investigate the original regions of Ha line emission and infrared excess emission in Be stars, by taking optical depth into account. We find that the two regions depend strongly on the physical properties of the envelope of Be stars such as the initial density and density structure. This model can be used to qualitatively interpret the disagreement between the near infrared excess and the equivalent width (EW) of Ha emission line, as observed in some Be stars.
引用
收藏
页码：1511 / 1513
页数：3
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