强IRAS远红外源的CO谱线观测

CO Line Emission Observations of Bright IRASSources

用紫金山天文台青海站的１３７ｍ射电望远镜对２７个强ＩＲＡＳ远红外源（流量Ｆ１００μｍ５００Ｊｙ）进行了ＣＯ（１－０）的谱线观测．观测表明，２７个强ＩＲＡＳ源全部与分子云成协，并与大质量星的形成或早期演化有关．其中１３个源是第一次给出ＣＯ（１－０）的谱线测量结果．本文对这一类源ＣＯ发射的性质进行了简单的讨论．

bservations of CO(1-0) line emission from 27 bright IRAS sources (withf luxes F100μm500 Jy) have been made using the 137 m telescope of the Purple Mountain Observatory at the Qinghai Station. We found that all the 27 sources are associated with molecular clouds and related to the formation or early evolution of massive stars. Thirteen new CO emission spectra are presented. The properties of CO emission from this kind of sources are also discussed briefly.