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arXiv · 0710.1504

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
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Abstract

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.

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Nicola Bennert, Gabriela Canalizo, Bruno Jungwiert, Alan Stockton, Francois Schweizer, Chien Peng, Mark Lacy. 2007-10-08. Searching for Mergers in Early-Type QSO Host Galaxies and a Control Sample of Inactive Ellipticals. https://doi.org/10.1017/s1743921308017742

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