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dc.contributor.authorWeisz, D.R.
dc.contributor.authorSkillman, E.D.
dc.contributor.authorCannon, J.
dc.contributor.authorWalter, F.
dc.contributor.authorBrinks, E.
dc.contributor.authorOtt, J.
dc.contributor.authorDolphin, A.E.
dc.date.accessioned2012-04-02T14:00:41Z
dc.date.available2012-04-02T14:00:41Z
dc.date.issued2009
dc.identifier.citationWeisz , D R , Skillman , E D , Cannon , J , Walter , F , Brinks , E , Ott , J & Dolphin , A E 2009 , ' Triggered star formation and the creation of the supergiant HI shell in IC 2574 ' , The Astrophysical Journal , vol. 691 , no. 1 , pp. L59-L62 . https://doi.org/10.1088/0004-637x/691/1/L59
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 153767
dc.identifier.otherPURE UUID: 7e459934-0950-4f54-8c42-c7e8d11b3cc3
dc.identifier.otherdspace: 2299/2944
dc.identifier.otherScopus: 64949097859
dc.identifier.otherORCID: /0000-0002-7758-9699/work/30407836
dc.identifier.urihttp://hdl.handle.net/2299/8129
dc.descriptionOriginal article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society. DOI: 10.1088/0004-637x/691/1/L59 [Full text of this article is not available in the UHRA]
dc.description.abstractBased on deep imaging from the Advanced Camera for Surveys aboard the Hubble Space Telescope (HST), we present new evidence that stellar feedback created a similar to 1 kpc supergiant Hi shell (SGS) and triggered star formation (SF) around its rim in the M81 Group dwarf irregular galaxy IC 2574. Using photometry of the resolved stars from the HST images, we measure the star formation history of a region including the SGS, focusing on the past 500 Myr, and employ the unique properties of blue helium-burning stars to create a movie of SF in the SGS. We find two significant episodes of SF inside the SGS from 200-300 Myr and similar to 25 Myr ago. Comparing the timing of the SF events to the dynamic age of the SGS and the energetics from the Hi and SF, we find compelling evidence that stellar feedback is responsible for creating the SGS and triggering secondary SF around its rim.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.subjectirregular galaxy sextans
dc.subjectHolmberg-II
dc.titleTriggered star formation and the creation of the supergiant HI shell in IC 2574en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionofrecordhttps://doi.org/10.1088/0004-637x/691/1/L59
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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