首页> 外文OA文献 >Detection of accreting gas toward HD 45677: A newly recognized, Herbig Be proto-planetary system
【2h】

Detection of accreting gas toward HD 45677: A newly recognized, Herbig Be proto-planetary system

机译:检测朝向HD 45677的积聚气体:新近认可的Herbig Be原始行星系统

摘要

We report detection of high velocity, accreting gas toward the Be star with IR excess and bipolar nebula, HD 45677. High velocity (+200 to +400 km/s), variable column density gas is visible in all IUE spectra from 1979-1992 in transitions of Si II, C II, Al III, Fe III, Si IV, and C IV. Low-velocity absorption profiles from low oscillator-strength transitions of Si II, Fe II, and Zn II exhibit double-peaked absorption profiles similar to those previously reported in optical spectra of FU Orionis objects. The UV absorption data, together with previously reported analyses of the IR excess and polarization of this object, suggest that HD 45677 is a massive, Herbig Be star with an actively accreting circumstellar, proto-planetary disk.
机译:我们报告了对高速,有过量红外和双极星云,HD 45677的Be恒星积聚气体的检测。从1979-1992年的所有IUE光谱中都可以看到高速(+200至+400 km / s),可变柱密度的气体在Si II,C II,Al III,Fe III,Si IV和C IV的过渡中。 Si II,Fe II和Zn II的低振荡强度跃迁产生的低速吸收曲线显示出双峰吸收曲线,类似于先前在FU Orionis物体的光谱中报道的那些。紫外线吸收数据以及先前报道的对该物体的红外过剩和偏振的分析表明,HD 45677是一颗巨大的Herbig Be星,具有主动积聚的星际,原行星盘。

著录项

相似文献

  • 外文文献
  • 专利

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