河外OH megamaser星系的观测和研究  

The Observations and Studies of OH Megamaser Extragalaxies

作　　者：俞志尧[1] 

机构地区：[1]中国科学院上海天文台

出　　处：《天文学进展》1991年第4期289-297,共9页Progress In Astronomy

摘　　要：本文主要评述对河外OH megamaser星系的搜索、观测和理论研究的现状。到目前为止已发现了31个OH megamaser星系。其中OH megamaser星系IC4553是第一个被发现的,也是唯一进行了VLA-A、MERLIN和VLBI观测的OH megamaser星系。根据目前的理论研究认为。红外辐射抽运引起OH脉泽分子的反转,放大来自核区的射电连续辐射的机制即是生成OH megamaser的机制。We have reviewed the searches, observations, and theoretical studies of OH mega-masers extragalaxies. So far 31 OH megamaser galaxies have been found. The OH megamaser galaxy IC4598 was the first one discovered and a unique one observed with VLA-A, MERLIN, and VLBI. According to the present theoretical studies the mechanism for forming OH megamaser extragalaxies is that the pumping of infrared radiation inverts OH maser molecules and radio continuous radiation from the core of the galaxies is amplified.

关 键 词：OH脉泽 观测 星系 

分 类 号：P155.22[天文地球—天文学]