| Mid-to-Far Infrared Spectral Energy Distribution of Galaxies in the Spitzer First Look Survey Field |
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| 作者姓名： | Xiao-Qing Wen Hong Wu Chen Cao and Xiao-Yang Xia |
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| 作者单位： | Xiao-Qing Wen1，2，Hong Wu2，Chen Cao2 and Xiao-Yang Xia1，2 1 Department of Physics，Tianjin Normal University，Tianjin 300074 2 National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012; |
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| 基金项目： | 国家自然科学基金;国家自然科学基金 |
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| 摘 要： | We made model fitting to the mid-to-far infrared spectral energy distributions (SEDs) for different categories of galaxies in the main extragalactic field of the Spitzer First Look Survey with the aid of spectroscopic information from the Sloan Digital Sky Survey. We find that the mid-to-far infrared SEDs of HII galaxies, mixture type galaxies and LINERs can be well fitted by the one-parameter (α) dust model of Dale et al. plus the 13 Gyr dust-free elliptical galaxy model. The statistics of α values indicates that all these galaxies tend to be quiescent, although the HII galaxies are relatively more active than the LINERs. The mid- infrared SEDs of absorption galaxies are well fitted simply by the 13 Gyr dust-free elliptical galaxy template, and the near-to-mid infrared SEDs of QSOs can be represented by AGN NGC 5506.
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| 关 键 词： | 河外星系 中远红外光谱能量分布 美国Spitzer空间望远镜 Sloan数字天文测量 |
Mid-to-Far Infrared Spectral Energy Distribution of Galaxies in the Spitzer First Look Survey Field |
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| Xiao-Qing Wen,,Hong Wu,Chen Cao and Xiao-Yang Xia, .Mid-to-Far Infrared Spectral Energy Distribution of Galaxies in the Spitzer First Look Survey Field[J].Chinese Journal of Astronomy and Astrophysics,2007,7(2):187-198. |
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| Authors: | Xiao-Qing Wen Hong Wu Chen Cao Xiao-Yang Xia |
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| Institution: | [1]Department of Physics, Tianjin Normal University, Tianjin 300074 [2]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 |
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| Abstract: | |
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| Keywords: | galaxies: general - infrared: galaxies - galaxies: active - galaxies: statistics |
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