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

Abstract:

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. This paper deals with the host-galaxy properties and origin of the gas. In every galaxy, we identify evidence of ongoing or past interactions. Several show multiple dust lanes in different orientations,...

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Maksym, WP More by this author
Bennert, VN More by this author
Lintott, CJ More by this author
Chojnowski, SD More by this author
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Publication date:
2014-08-21
URN:
uuid:1bc797f5-a986-4818-939c-dd95bcf6c899
Source identifiers:
482468
Local pid:
pubs:482468
Keywords:

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