大质量星形成区的高速气体搜寻  

A Search for High Velocity Gas in Massive Star Formation Regions

作　　者：吴月芳[1] 李月兴[1] 郑力锋 

机构地区：[1]北京大学地球物理系

出　　处：《天体物理学报》1998年第3期341-344,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：在红外天文卫星点源表中选取了具有陡远红外谱的９７个源及其它８个红外源，用射电天文联合实验室紫金山天文台青海站的１３７ｍ望远镜，进行了ＣＯ（Ｊ＝１－０）的观测．结果在１０２个源中测到了ＣＯ辐射，有９个源参考位置难以确定，２１个源有多重成分，在其余７２个源中有２９个具有高速气体，其中１８个是新测到的双极外向流候选者，对其性质及与年轻星体的关系作了简要讨论．From the IRAS PSC 97 sources with steep FIR spectrum and another 8 point sources were chosen to search for high velocity gas.Observations of CO( J =1-0)lines were made with the 13 7 mtelescope at the Qinghai Station of Purple Mountain Observatory,Joint Laboratory for Radio Astronomy.The results show that there are 102 sources associated with molecular gas,9 sources having reference position problems and 21 having multiple spectrum.In the 72 other sources 29 are with high velocity gas,of which 18 are new molecular-outflow candidates.Their properties are discussed briefly in connection with massive young stellar objects.

关 键 词：星陆分子 喷流 外流 大质量恒星形成 高速气体 

分 类 号：P155.22[天文地球—天文学] P152