脉泽分子云动力学结构的VLBI测量

利用VLBⅠMKⅢ记录系统, 在1665和1667MHz跃迁频率上, 观测活动恒星形成区NGC6334F的左右圆偏振羟基(OH)脉泽分子辐射;介绍了VLBIOH分子谱线观测过程, 给出了基本的观测结果, 并对结果作了简要地分析和讨论. 

VLBI MEASUREMENT FOR THE DYNAMICAL STRUCTURE OF THE MASERING REGION

Hydroxyl maser emissions associated with a star formation region NGC6334 Fin right and left polarizations at the 1665 and 1667 MHz transitions are observed with VLBI MKIIIrecording system. It is found that in the region, the strong Hydroxyl maser emissions come from an area of a scale 5×1015cm. The majority of Hydroxyl maser features are projected onto the core of cometary HIIregion. The velocity gradiant 6-10 km/s/arcsec is found in the velocity-position plot. This suggests that there may be a rotating disk in which a young OBstar is formed with mass -25M_⊙.