Show simple item record

dc.contributor.authorNgoumou, J.
dc.contributor.authorHubber, D.
dc.contributor.authorBurkert, A.
dc.contributor.authorDale, James
dc.date.accessioned2017-07-18T15:37:47Z
dc.date.available2017-07-18T15:37:47Z
dc.date.issued2014-12-18
dc.identifier.citationNgoumou , J , Hubber , D , Burkert , A & Dale , J 2014 , ' First Investigation of the Combined Impact of Ionizing Radiation and Momentum Winds from a Massive Star on a Self-gravitating Core ' , The Astrophysical Journal , vol. 798 , no. 1 . https://doi.org/10.1088/0004-637X/798/1/32
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 11151036
dc.identifier.otherPURE UUID: c0c33321-5711-4bd9-884b-30dcb98c9a86
dc.identifier.otherBibtex: urn:0b6317c5a8a603ad8d77fe96254a3f9f
dc.identifier.otherScopus: 84919484885
dc.identifier.otherORCID: /0000-0001-5252-5771/work/62751077
dc.identifier.urihttp://hdl.handle.net/2299/18980
dc.descriptionJ. Ngoumou, et al., “First Investigation of the Combined Impact of Ionizing Radiation and Momentum Winds from a Massive Star on a Self-gravitating Core”, The Astrophysical Journal, Vol. 798(1), December 2015. © 2015. The American Astronomical Society.
dc.description.abstractMassive stars shape the surrounding interstellar matter (ISM) by emitting ionizing photons and ejecting material through stellar winds. To study the impact of the momentum from the wind of a massive star on the surrounding neutral or ionized material, we implemented a new HEALPix-based momentum-conserving wind scheme in the smoothed particle hydrodynamics (SPH) code SEREN. A qualitative study of the impact of the feedback from an O7.5-like star on a self-gravitating sphere shows that on its own, the transfer of momentum from a wind onto cold surrounding gas has both a compressing and dispersing effect. It mostly affects gas at low and intermediate densities. When combined with a stellar source's ionizing ultraviolet (UV) radiation, we find the momentum-driven wind to have little direct effect on the gas. We conclude that during a massive star's main sequence, the UV ionizing radiation is the main feedback mechanism shaping and compressing the cold gas. Overall, the wind's effects on the dense gas dynamics and on the triggering of star formation are very modest. The structures formed in the ionization-only simulation and in the combined feedback simulation are remarkably similar. However, in the combined feedback case, different SPH particles end up being compressed. This indicates that the microphysics of gas mixing differ between the two feedback simulations and that the winds can contribute to the localized redistribution and reshuffling of gas.en
dc.format.extent11
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.subjectH II regions, ISM: bubbles, ISM: clouds, stars: massive, stars: winds, outflows
dc.titleFirst Investigation of the Combined Impact of Ionizing Radiation and Momentum Winds from a Massive Star on a Self-gravitating Coreen
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1088/0004-637X/798/1/32
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record