关于VX Sgr的拱星包层结构的研究  

THE STUDY ABOUT THE STRUCTURE OF VX SGR CIRCUMSTELLAR ENVELOPE

作　　者：俞志尧[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《天文学报》1993年第1期26-31,共6页Acta Astronomica Sinica

摘　　要：本文利用SiO脉泽VLBI观测和H_2O、OH脉泽MERLIN观测以及CO(2-1)分子发射谱线的观测研究了VX Sgr拱星包层的复杂的空间结构.发现SiO、H_2O和OH脉泽分量和CO(2-1)分子在拱星包层中呈现分壳分布.同时还研究了VX Sgr拱星包层的速度结构,得到了它的膨胀速度场的分布曲线.Using the VLBI observation of SiO maser, MERLIN observation of H_2O and OH maser,and emission line of CO(2-1), we have studied the complex space structure of VX Sgr circumstellar envelope, and found that the molecules of SiO, H_2O, and OH maser distribute on the multiple separated spheric shells, so are the molecules of CO(2-1). We have also studied its velocity structure and obtained the distribution curve of its field of expanding velocity.

关 键 词：恒星 拱星包层 空间结构 速度结构 

分 类 号：P152[天文地球—天文学]