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dc.contributor.authorDe Villiers, Helena Maria
dc.contributor.authorChrysostomou, A.
dc.contributor.authorThompson, M.A.
dc.contributor.authorUrquhart, J.S.
dc.contributor.authorBreen, S.L.
dc.contributor.authorBurton, M.G.
dc.contributor.authorEllingsen, S.P.
dc.contributor.authorFuller, G.A.
dc.contributor.authorPestalozzi, Michele
dc.contributor.authorVoronkov, M. A.
dc.contributor.authorWard-Thompson, D.
dc.date.accessioned2015-03-24T11:48:42Z
dc.date.available2015-03-24T11:48:42Z
dc.date.issued2015-05-01
dc.identifier.citationDe Villiers , H M , Chrysostomou , A , Thompson , M A , Urquhart , J S , Breen , S L , Burton , M G , Ellingsen , S P , Fuller , G A , Pestalozzi , M , Voronkov , M A & Ward-Thompson , D 2015 , ' 6.7-GHz methanol maser associated outflows : an evolutionary sequence ' , Monthly Notices of the Royal Astronomical Society , vol. 449 , no. 1 , pp. 119-128 . https://doi.org/10.1093/mnras/stv173
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 8301109
dc.identifier.otherPURE UUID: 81d5b4ef-2e3f-4039-968c-ace1a168b44c
dc.identifier.otherScopus: 84930833890
dc.identifier.otherORCID: /0000-0001-5392-909X/work/30970776
dc.identifier.urihttp://hdl.handle.net/2299/15703
dc.descriptionDate of Acceptance: 23/01/2015
dc.description.abstractWe present a continuing study of a sample 44 molecular outflows, observed in 13CO lines, closely associated with 6.7-GHz methanol masers, hence called methanol maser associated outflows (MMAOs). We compare MMAO properties with those of outflows from other surveys in the literature. In general, MMAOs follow similar trends, but show a deficit in number at low masses and momenta, with a corresponding higher fraction at the high end of the distributions. A similar trend is seen for the dynamical time-scales of MMAOs. We argue that the lack of relatively low mass and young flows in MMAOs is due to the inherent selection-bias in the sample, i.e. its direct association with 6.7-GHz methanol masers. This implies that methanol masers must switch on after the onset of outflows (hence accretion), and not before a sufficient abundance of methanol is liberated from icy dust mantles. Consequently the average dynamical age of MMAOs is older than for the general population of molecular outflows. We propose an adjusted evolutionary sequence of outflow and maser occurrence in the hot core phase, where methanol masers turn on after the onset of the outflow phase.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectAstronomy and Astrophysics
dc.title6.7-GHz methanol maser associated outflows : an evolutionary sequenceen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stv173
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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