星际水脉泽源中高速气体的CO巡测  

A CO Survey for High Velocity Gas in Interstellar H 2O Maser Sources

作　　者：吴月芳[1,2,3] 李月兴[1,2,3] 吕静 孙金江[1,2,3] 雷成明 王利明[1,2,3] 韩溥 

机构地区：[1]北京大学地球物理系 [2]中国科学院-北京大学联合北京天体物理中心 [3]紫金山天文台青海观测站

出　　处：《天体物理学报》1998年第4期415-418,共4页

基　　金：国家自然科学基金;中国科学院射电天文联合实验室资助

摘　　要：用射电天文联合实验室紫金山天文台青海站１３．７米望远镜，于１９９７年４月对９７个水脉泽源做了ＣＯ（Ｊ＝１－０）的巡测及部分成图观测，结果表明８１个源的谱线适于作成协星体活动分析．经初步证认有外向流候选者３３个，全部为首次给出高速范围．对其轮廓特点及与Ｈ２Ｏ脉泽辐射的关系作了简要讨论．ＣＯ高速气体和Ｈ２Ｏ脉泽的速度范围和峰值速度在多数情况下分别相符，这说明两者的激发可能相关．Using the 13.7 m telescope of Joint Radio Lab. Purple Mountain Observatory Qinghai Station, a survey and a partial mapping with CO (J=1-0) lines were made for 97 interstellar H 2O maser sources in April 1997. Resultsfor 81 sources are suitable for analyzing the activities of associated stellar objects. 33 sources have been identified to be molecular outflow candidates. Their characteristics and the relation between the CO (J=1-0) and H 2O 6 16 - 5 23 emissions are discussed briefly. A comparison of both velocity range and peak value between the CO and H 2O lines shows good agreement in most cases, which suggests that their exciting mechanisms may be correlated.

关 键 词：星际分子 天体脉泽 高速气体 CO巡测 

分 类 号：P155.22[天文地球—天文学]