新的H_2O脉泽源的发现与证认

DISCOVERY AND IDENTIFICATION OF NEW H_2O MASER SOURCES

用紫金山天文台青海站的１３．７ｍ射电望远镜对一批强ＩＲＡＳ远红外源（流量Ｆ１００μｍ＞５００Ｊｙ）进行了Ｈ２Ｏ脉泽谱线的搜寻，发现了１０个新的Ｈ２Ｏ脉泽源。其中９个源均与恒星形成区成协，它们是正在形成中的大质量星的标志，另一个则是著名的富碳星ＩＲＣ１０２１６，在富碳星包层中Ｈ２Ｏ脉泽活动的出现是罕见的。还讨论了这些新发现源的演化特性和时变特性。

A search for H2O maser emission towards bright far-infrared IRAS sources has been made with the 13.7 m telescope of Purple Mountain Observatory at Qinhai station. The infrared fluxes at 100μm for all observed sources are larger than 500Jy. 10 new H2O maser sources were discovered. 9 new sources are associated with star formation regions and one is the famous rich carbon star-IRC10216. The discovery of H2O maser in the envelope of rich-C star is very seldom.The evolution and time-variation nature were also discussed.