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題名 | 活躍星系核宿主星系之多波段光度研究=Photometric Study of AGN Host Galaxies |
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作者 | 陳安貞; 孫維新; | 書刊名 | 臺北天文館學報 |
卷期 | 2 民93.12 |
頁次 | 頁32-40 |
分類號 | 323.83 |
關鍵詞 | 活躍星系核; 宿主星系; 表面亮度; 色指數; 亮度分佈解析; Active galactic nucleus; Host galaxy; Surface brightness; Decomposition of intensity profile; Color index; |
語文 | 中文(Chinese) |
中文摘要 | 本研究使用BVR波段觀測41個近處的活躍星系,針對西佛I,II型星系及LINERs所處的宿主星系之表面亮度分佈及色指數。41個星系包含5個西佛I型,19個西佛II型,17個LINERs,西佛I型有較藍的核心,宿主星系之顏色並無顯著差異。我們也將32個漩渦及棒漩星系的亮度分佈解析成核心、橢球、盤面三個部份,西佛I型星系有較高的核心亮度貢獻,西佛II型其次,LINERs最低;橢球及盤面的部份則未見明顯差異。 |
英文摘要 | We have obtained multi-band (BVR) photometry of a sample of 41 active galaxies, including type 1 Seyfert, type 2 Seyfert galaxies, and low ionization nuclear emission region (LINER). In order to study the physical properties of AGN host galaxies. the intensity profiles in each band are obtained. We calculate the colors of the nuclei and the effective radii using average B-V, and V-R value. We find that the Seyfert 1 galaxies have bluer nucleus color. We also caculate the nucleus-to-galaxy ratio, and find that the Seyfert 1 galaxies have higher ratio. |
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