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

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dc.contributor.authorLockhart, Kelly E
dc.contributor.authorKewley, Lisa
dc.contributor.authorLu, Jessica
dc.contributor.authorAllen, Mark G.
dc.contributor.authorRupke, D
dc.contributor.authorCalzetti, Daniela
dc.contributor.authorDavies, Richard I
dc.contributor.authorDopita, Michael
dc.contributor.authorEngel, Hauke
dc.contributor.authorHeckman, T M
dc.contributor.authorLeitherer, Claus
dc.contributor.authorSanders, David
dc.date.accessioned2016-06-14T23:20:12Z
dc.date.issued2015
dc.date.updated2016-06-14T08:46:47Z
dc.description.abstractWe 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 possibilities for the bubble origin, including a jet or outflow from a hidden active galactic nucleus (AGN), outflows from high levels of star formation within the few hundred pc nuclear gas disk, or an ultraluminous X-ray source. An obscured AGN or high levels of star formation within the inner ∼100 pc of the nuclei are favored based on the alignment of the bubble and energetics arguments.
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1885/103259
dc.publisherIOP Publishing
dc.rightsAuthor/s retain copyrighten_AU
dc.sourceAstrophysical Journal, The
dc.titleHST/WFC3 OBSERVATIONS of AN OFF-NUCLEAR SUPERBUBBLE in ARP 220
dc.typeJournal article
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue2
local.contributor.affiliationLockhart, Kelly E, University of Hawaii
local.contributor.affiliationKewley, Lisa, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLu, Jessica, University of Hawaii
local.contributor.affiliationAllen, Mark G., Observatoire de Strasbourg
local.contributor.affiliationRupke, D, Rhodes College
local.contributor.affiliationCalzetti, Daniela, University of Massachusetts
local.contributor.affiliationDavies, Richard I, Max Planck Institute for Extraterrestrial Physics
local.contributor.affiliationDopita, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationEngel, Hauke, Max Planck Institute for Extraterrestrial Physics
local.contributor.affiliationHeckman, T M, Johns Hopkins University
local.contributor.affiliationLeitherer, Claus, Space Telescope Science Institute
local.contributor.affiliationSanders, David, University of Hawaii
local.contributor.authoruidKewley, Lisa, u9415124
local.contributor.authoruidDopita, Michael, u7501303
local.description.notesImported from ARIES
local.identifier.absfor020100 - ASTRONOMICAL AND SPACE SCIENCES
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
local.identifier.ariespublicationU3488905xPUB6036
local.identifier.citationvolume810
local.identifier.doi10.1088/0004-637X/810/2/149
local.identifier.scopusID2-s2.0-84941640944
local.type.statusPublished Version

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