羟基脉泽寄主星系的红外特性研究

项目名称： 羟基脉泽寄主星系的红外特性研究

项目编号： No.11473007

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 张江水

作者单位： 广州大学

项目金额： 90万元

中文摘要： 本项目拟综合分析WISE、AKARI、Spitzer 等红外卫星观测资料，对羟基超脉泽寄主星系的红外特性进行系统研究。通过系统分析各红外卫星的测光和光谱资料，获得羟基超脉泽寄主星系的红外特性，包括各个红外波段的辐射流量、光度，谱指数，各种特征发射线和吸收特征，红外谱能量分布特性等；综合对比分析脉泽与非脉泽寄主亮红外星系的红外特性，探索研究脉泽寄主亮红外星系可能的内禀特性；对整个羟基脉泽寄主星系样本，统计分析、研究脉泽辐射与寄主星系红外辐射间的内在联系，探讨羟基超脉泽的产生、抽运能源及抽运机制等；分析脉泽源的抽运效率，及抽运效率与脉泽寄主星系的各红外颜色之间的关系，探索脉泽的饱和特性等。同时，通过该项目的实施，为将来先进望远镜（如FAST）开展脉泽搜寻的选源工作提供重要参考。

中文关键词： 羟基；脉泽；星系；红外

英文摘要： This project plans to investigate the infrared properites of OH megamser host galaxies, through comprehensive analysis on observation data from developed infrared satellites, such as WISE, AKARI, Spitzer etc. Through systematic analysis on infrared photometry and spectroscopy data, we can obtain detailed infrared properties of megamaser galaxies, including flux/luminosity at each band, spectral indices, various emission line tracers and absorption fetures, the infrared spectra energy distribution (SED) etc. Through detailed comparison on infrared properties of OH megamaser host luminous infrard galaxies (LIRGs) and non-maser LIRGs, we try to explore some kinds of intrinsic property of OH megamaser LIRGs. For the large sample of all OH megamaser galaxies, statistical analysis on megamasers and maser hosts' infrared luminosity/flux will be performed, to investigate their associaiton and explore the formation of OH megamser, possible pumping energy and pumping mechanism etc. Also maser pumping efficiency for the large sample can be analyzed and the relation would be discussed on the pumping efficiency and infrared colors, to explore if the masers are saturated or unsaturated. Meanwhile, accomplishment of this poroject will be helpful to guide OH megamaser search (sample selection) by future advanced telescopes (e.g., FAST).

英文关键词： OH;maser;galaxy;infrared