Show simple item record

Files in this item

Thumbnail

Item metadata

dc.contributor.authorDale, J.E.
dc.contributor.authorNgoumou, J.
dc.contributor.authorErcolano, B.
dc.contributor.authorBonnell, I.A.
dc.date.accessioned2014-09-05T16:01:09Z
dc.date.available2014-09-05T16:01:09Z
dc.date.issued2014-07-21
dc.identifier.citationDale , J E , Ngoumou , J , Ercolano , B & Bonnell , I A 2014 , ' Before the first supernova : combined effects of H II regions and winds on molecular clouds ' , Monthly Notices of the Royal Astronomical Society , vol. 442 , no. 1 , pp. 694-712 . https://doi.org/10.1093/mnras/stu816en
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 146009443
dc.identifier.otherPURE UUID: ee1cf8ec-ac47-4ec6-a168-e82ed9a90ed5
dc.identifier.otherScopus: 84903129189
dc.identifier.otherWOS: 000338765400060
dc.identifier.urihttps://hdl.handle.net/10023/5366
dc.descriptionIAB acknowledges funding from the European Research Council for the FP7 ERC advanced grant project ECOGAL. JN would like to acknowledge the German Deutsche Forschungsgemeinschaft, DFGPR 569/9-1.en
dc.description.abstractWe model the combined effects of photoionization and momentum-driven winds from O-stars on molecular clouds spanning a parameter space of initial conditions. The dynamical effects of the winds are very modest. However, in the lower mass clouds, they influence the morphologies of the H II regions by creating 10-pc-scale central cavities. The inhomogeneous structures of the model giant molecular clouds (GMCs) make them highly permeable to photons, ionized gas and supernova ejecta, and the leaking of ionized gas in particular strongly affects their evolution, reducing the effectiveness of feedback. Nevertheless, feedback is able to expel large fractions of the mass of the lower escape velocity clouds. Its impact on star formation is more modest, decreasing final star formation efficiencies by 10-20 per cent, and the rate of change of the star formation efficiency per freefall time by about one third. However, the clouds still form stars substantially faster than observed GMCs.
dc.format.extent19
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Societyen
dc.subjectStars: formationen
dc.subjectISM: bubblesen
dc.subjectH II regionsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectBDCen
dc.subjectR2Cen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleBefore the first supernova : combined effects of H II regions and winds on molecular cloudsen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1093/mnras/stu816
dc.description.statusPeer revieweden
dc.identifier.grantnumberen
dc.identifier.grantnumberST/J001651/1en


This item appears in the following Collection(s)

Show simple item record