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arXiv 0710.1504astro-ph
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早型QSO主星系和非活动椭圆星系的并合

Searching for Mergers in Early-Type QSO Host Galaxies and a Control Sample of Inactive Ellipticals

Nicola Bennert, Gabriela Canalizo, Bruno Jungwiert, Alan Stockton, Francois Schweizer, Chien Peng, Mark Lacy

摘要:

我们提出了非常深的HST/ACS图像的类星体宿主星系,在早期的研究中被归类为不受干扰的椭圆。对于五个物体中的四个,我们的图像显示了强烈的相互作用迹象,如潮汐尾,壳和其他精细结构,这表明大部分类星体宿主星系可能经历了相对较近的合并事件。我们对不活跃椭圆星系的控制样本的初步结果没有显示出可比的精细结构。

英文摘要:

We present very deep HST/ACS images of five QSO host galaxies, classified as undisturbed ellipticals in earlier studies. For four of the five objects, our images reveal strong signs of interaction such as tidal tails, shells, and other fine structure, suggesting that a large fraction of QSO host galaxies may have experienced a relatively recent merger event. Our preliminary results for a control sample of inactive elliptical galaxies do not reveal comparable fine structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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