HST Imaging of Fading AGN Candidates I: Host-Galaxy Properties and Origin of the Extended Gas

We present narrow- and medium-band HST imaging, with supporting data, for 8 galaxies hosting fading AGN. These are selected to have AGN-ionized gas projected >10 kpc from the nucleus, and a significant shortfall of ionizing radiation, indicating fading of the AGN on ~50,000-year timescales. T...

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Bibliographic Details
Main Authors: Keel, W, Maksym, W, Bennert, V, Lintott, C, Chojnowski, S, Moiseev, A, Smirnova, A, Schawinski, K, Urry, C, Evans, D, Pancoast, A, Scott, B, Showley, C, Flatland, K
Format: Journal article
Published: 2014