活动星系核水脉泽源的谱能量分布(英文)  

The spectral energy distribution of H_2O AGN-masers

作　　者：张江水[1] 李荣妹[1,2] 黄峰[1] 

机构地区：[1]广州大学物理与电子工程学院,广东广州510006 [2]华南师范大学物理与电信工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2013年第2期15-19,共5页Journal of Guangzhou University:Natural Science Edition

基　　金：973资助项目(2012CB821800);国家自然科学基金资助项目(11043012,11178009)

摘　　要：收集目前发表的与活动星系核相关的所有水脉泽源,以及它们各个波段(从射电到X射线)的观测资料.在66个这类星系中,有40个源的观测资料较全,得到的谱能量分布图较好,便于进一步分析.它们的谱能量分布形态相似,最强辐射位于远红外波段(峰值出现在-60μm处).对它们的谱能量分布图进行拟合积分,估计得到它们的热光度.热光度范围从1042到1046ergs.s-1,且大多数(26/40)为-1044ergs.s-1,平均值为1044.4±0.1ergs.s-1.对这40个源的子样本,进一步分析其脉泽辐射强度与脉泽寄主星系热光度间的可能的相关.结果显示,虽然弥散比较大,但脉泽辐射随热光度增加趋向于增强.对影响这一相关性的可能因素做进一步讨论.We investigated all published H20 maser sources related to AGNs and collected their observational data over the whole wavelength （from radio to X-ray）, in order to obtain their spectral energy distributions （SEDs）. Among 66 nuclear maser galaxies, we got enough data to produce one SED with good shape for 40 sources. Their SEDs mostly have similar morphology and the strongest emission appears at the far infrared （FIR） region （ peaks at - 60 p.m）. Based on their SEDs, their bolometric luminosities were estimated through integrating the SEDs. Their bolometric luminosities range from 10^42 to 10^46 ergs·s^-1 and the majority （26/40） has bolometric luminosity of - 1044 ergs·s^-1, with a mean value of 10^44.4±0.1 ergs·s^-1. For the subsample of those 40 nuclear masers, we further analyzed possible relation of maser emission and the intrinsic power of maser hosts. The trend may be apparent, i. e. , raising maser luminosity with increasing bolometric luminosity, al-though there are large scatter. Some possible uncertainties were finally discussed on the relation.

关 键 词：谱能量分布 活动星系核 脉泽 

分 类 号：P14[天文地球—天体物理]