...
首页> 外文期刊>The Astrophysical journal >A Brγ Probe of Disk Accretion in T Tauri Stars and Embedded Young Stellar Objects
【24h】

A Brγ Probe of Disk Accretion in T Tauri Stars and Embedded Young Stellar Objects

机译:T Tauri星和嵌入的年轻恒星物体盘状增生的Brγ探针

获取原文

摘要

We report on observations of Paβ and Brγ for a sample of classical T Tauri stars in Taurus and find a tight correlation between the emission-line luminosities and the accretion luminosity as measured from the hot continuum excess. We use the Brγ luminosity correlation to calculate accretion luminosities in highly reddened young stars with existing line measurements. The distribution of accretion luminosities is similar in Taurus and Ophiuchus Class II sources. For the deeply embedded Class I objects, the accretion luminosities are in general less than the bolometric luminosities, which implies that the disk accretion rates are significantly lower than the envelope infall rates. We find that the central sources of many Class I objects are quite similar to their Class II counterparts.
机译:我们报告了对金牛座经典T Tauri恒星样本中Paβ和Brγ的观测结果,发现从热连续体过量测量的发射线光度与吸积光度之间具有紧密的相关性。我们使用Brγ光度相关性通过现有的线测量来计算高度发红的年轻恒星的吸积光度。增生光度的分布在金牛座和蛇夫II类源中相似。对于深度嵌入的I类对象,吸积光度通常小于辐射热度,这意味着磁盘吸积率显着低于包络下降率。我们发现许多I类对象的主要来源与II类对象非常相似。

著录项

获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号