强远红外源中CO(1—0)谱线的新观测  

NEW OBSERVATION OF CO(1-0) LINE EMISSION IN STRONG FAR INFRARED SOURCES

作　　者：张海燕[1] 孙锦[1] 平劲松[1] 

机构地区：[1]北京师范大学天文学系,北京100875

出　　处：《北京师范大学学报（自然科学版）》1999年第2期220-223,共4页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金!19873003;国家射电天文联合实验室资助

摘　　要：利用紫金山天文台13．7m射电望远镜对20个强IRAS远红外源（F(100μm)＞500Jy）进行了CO（1—0）的谱线观测，全部观测到CO发射．其中6个源为第1次观测到CO（1—0）谱线．在新观测的源中，5个可能有分子外向流．这些观测源的红外性质暗示出它们是仍深埋在分子云中的年轻星，显示出远红外源与分子云有关．The observations of CO(1- 0) line emission from 20 strong IRAS sources are made with the 13.7m telescope of Purple Mountain Observatory at Qinhai station. The result shows that all detected sources have CO emission. It includes first confirmed detection in CO for 6 far infrared sources, and 5 newly detected sources may have molecular outflows. According to the infrated properties of these sources , they are YSOs still deeply embeded in the clouds for which they formed, and far infrared sources are related with molecular clouds.

关 键 词：年轻星体 强远红外源 谱线 观测 一氧化碳分子 

分 类 号：P155.22[天文地球—天文学]