摘要
从１９９２年９月起，对近８２个外流源或电离氢区，用紫金山天文台青海站的１３．７ｍ望远镜进行了水脉泽观测。有三个源首次测得了弱Ｈ＿２Ｏ脉泽辐射；对已知源的观测结果表明星际水脉泽的时变比较普遍。流量变化２０％以上的源达７５％。在高质量外流源中水脉泽深测率比低质量外流源中的高。本文还讨论了脉泽产生率与ＣＯ谱线宽度及成协源红外辐射的相关性。
Observations were made of about 40H_2Omasers with 13. 7m telescope atQin Ha Station of Purple Mountain Observatory since September of 1992. Results show that time variations of water masers are common in star formation regions.Sources with flux density variation above 20%are 75%of the sample.The detected rate in high mass outflow sources is higher than that in low mass ones.The correla-tions of maser occurence frequency with CO line width and infrared emission intensi-ty are discussed.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1995年第3期339-344,共6页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金
