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dc.contributor.authorMcCormick, Alexander
dc.contributor.authorVeilleux, Sylvain
dc.contributor.authorMeléndez, Marcio
dc.contributor.authorMartin, Crystal L
dc.contributor.authorBland-Hawthorn, Joss
dc.contributor.authorCecil, Gerald
dc.contributor.authorHeitsch, Fabian
dc.contributor.authorMüller, Thomas
dc.contributor.authorRupke, David S N
dc.contributor.authorEngelbracht, Chad
dc.date.accessioned2018-08-02T19:17:09Z
dc.date.available2018-08-02T19:17:09Z
dc.date.issued2018-06
dc.identifier.citationAlexander McCormick, Sylvain Veilleux, Marcio Meléndez, Crystal L Martin, Joss Bland-Hawthorn, Gerald Cecil, Fabian Heitsch, Thomas Müller, David S N Rupke, Chad Engelbracht; Exploring the dust content of galactic winds with Herschel – II. Nearby dwarf galaxies, Monthly Notices of the Royal Astronomical Society, Volume 477, Issue 1, 11 June 2018, Pages 699–726, https://doi.org/10.1093/mnras/sty634en_US
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.doi10.1093/mnras/sty634
dc.identifier.urihttp://hdl.handle.net/10150/628332
dc.description.abstractWe present the results from an analysis of deep Herschel Space Observatory observations of six nearby dwarf galaxies known to host galactic-scale winds. The superior far-infrared sensitivity and angular resolution of Herschel have allowed detection of cold circumgalactic dust features beyond the stellar components of the host galaxies traced by Spitzer 4.5 mu m images. Comparisons of these cold dust features with ancillary data reveal an imperfect spatial correlation with the ionized gas and warm dust wind components. We find that typically similar to 10-20 per cent of the total dust mass in these galaxies resides outside of their stellar discs, but this fraction reaches similar to 60 per cent in the case of NGC 1569. This galaxy also has the largest metal-licity (O/H) deficit in our sample for its stellar mass. Overall, the small number of objects in our sample precludes drawing strong conclusions on the origin of the circumgalactic dust. We detect no statistically significant trends with star formation properties of the host galaxies, as might be expected if the dust were lifted above the disc by energy inputs from ongoing star formation activity. Although a case for dust entrained in a galactic wind is seen in NGC 1569, in all cases, we cannot rule out the possibility that some of the circumgalactic dust might be associated instead with gas accreted or removed from the disc by recent galaxy interaction events, or that it is part of the outer gas-rich portion of the disc that lies below the sensitivity limit of the Spitzer 4.5 mu m data.en_US
dc.description.sponsorshipNASA through Herschel contracts [1427277, 1454738]; ADAP [NNX16AF24G]; National Science Foundation [AST-1109288]; European Union's Horizon 2020 Research and Innovation Programme [687378]; CSA (Canada); NAOC (China); CEA (France); CNES (France); CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK); UKSA (UK); NASA (USA)en_US
dc.language.isoenen_US
dc.publisherOXFORD UNIV PRESSen_US
dc.relation.urlhttps://academic.oup.com/mnras/article/477/1/699/4931773en_US
dc.rights© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Societyen_US
dc.subjectgalaxies: dwarfen_US
dc.subjectgalaxies: generalen_US
dc.subjectgalaxies: haloesen_US
dc.subjectgalaxies: interactionsen_US
dc.subjectgalaxies: star formationen_US
dc.subjectgalaxies: structureen_US
dc.titleExploring the dust content of galactic winds with Herschel – II. Nearby dwarf galaxiesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Astronen_US
dc.identifier.journalMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleMonthly Notices of the Royal Astronomical Society
dc.source.volume477
dc.source.issue1
dc.source.beginpage699
dc.source.endpage726
refterms.dateFOA2018-08-02T19:17:10Z


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