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HST/WFC3 OBSERVATIONS of AN OFF-NUCLEAR SUPERBUBBLE in ARP 220

Lockhart, Kelly E; Kewley, Lisa; Lu, Jessica; Allen, Mark G.; Rupke, D; Calzetti, Daniela; Davies, Richard I; Dopita, Michael; Engel, Hauke; Heckman, T M; Leitherer, Claus; Sanders, David

Description

We present a high spatial resolution optical and infrared study of the circumnuclear region in Arp 220, a late-stage galaxy merger. Narrowband imaging using Hubble Space Telescope/WFC3 has resolved the previously observed peak in Hα+[N ii] emission into a bubble-shaped feature. This feature measures 1.″6 in diameter, or 600 pc, and is only 1″ northwest of the western nucleus. The bubble is aligned with the western nucleus and the large-scale outflow axis seen in X-rays. We explore several...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
URI: http://hdl.handle.net/1885/103259
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/810/2/149

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