Multi-Band Bar/Bulge/Disk Image Decomposition of a Thousand Galaxies
Multi-Band Bar/Bulge/Disk Image Decomposition of a Thousand Galaxies
复制标题
千个星系的多波段条形/核球/盘状图像分解
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
G. Kauffmann
中科院分区：
文献类型：
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作者：
D. Gadotti;G. Kauffmann
摘要 通过 g、r 和 i 波段的复杂图像分解，可以确定近 1000 个附近星系样本的核球、盘和条的结构参数。该样本是从斯隆数字巡天数据第 2 版 (SDSS DR2) 中精心抽取的，包含 963 个星系，其中 407 个拥有 AGN，我们表明它代表了本地宇宙中的星系和 AGN 群体。 SDSS 合作还确定了这些星系的大量其他物理特性。有了这些数据，我们强化了最近的几项研究，并发现了一些结果，从而对不同星系组成部分如何相互关联以及活动星系核的宿主星系与静止星系的不同程度产生了新的见解。
Abstract The structural parameters of bulges, disks and bars of a sample of nearly 1000 nearby galaxies are being determined through sophisticated image decomposition in the g, r and i bands. The sample is carefully drawn from the Sloan Digital Sky Survey Data Release 2 (SDSS DR2), contains 963 galaxies, of which 407 host AGN, and we show that it is representative of the galaxy and AGN populations in the local universe. A large number of other physical properties have also been determined for these galaxies within the SDSS collaboration. With these data, we reinforce several recent studies and find a number of results leading to new insights into how the different galaxy components relate to each other and the extent to which the hosts galaxies of AGN differ from quiescent galaxies.