jianjie

中国天文学会学术期刊

天文学进展

PROGRESS IN ASTRONOMY

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河外H₂O超脉泽源及与其相关的分子谱线的观测和研究

俞志尧
(中国科学院上海天文台　上海　200030)

摘要

自从在活动星系核NGC 4945的视线方向上发现第一个河外H₂O超脉泽源以来，迄今为止已发现了19个河外H₂O超脉泽源。对与活动星系核成协的河外超脉泽源及分子谱线的观测和研究是探测和研究活动星系核核区中央源、拱核气体和尘埃环性质的非常有效的工具。主要评述对河外H₂O超脉泽源及与其相关分子谱线的搜索、观测和理论研究现状。

Observational Study on Extragalactic H₂O Megamaser Sources
and Associated Molecular Emission Lines

Yu Zhiyao
(Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030)

Abstract

Since the first extragalactic H₂O megamaser source toward the Active Galactic Nuclei NGC 4945 was discovered, 19 sources have been found. The observational study of extragalactic H₂O megamaser sources and molecular emission lines associated with AGNs is a very efficient tool to investigate characteristics of certral sources in AGNs and circumnuclear toruses of gases and dusts. Current researches of searching, observation and theory on extragalactic H₂O megamaser sources and associated molecular emission lines are mainly reviewed in this paper.