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dc.contributor.authorRollins, R. P.
dc.contributor.authorRawlings, J. M. C.
dc.contributor.authorWilliams, D. A.
dc.contributor.authorRedman, M. P.
dc.identifier.citationRollins, R. P. Rawlings, J. M. C.; Williams, D. A.; Redman, M. P. (2014). Champagne flutes and brandy snifters: modelling protostellar outflow-cloud chemical interfaces. Monthly Notices of the Royal Astronomical Society 443 (4), 3033-3043
dc.description.abstractA rich variety of molecular species has now been observed towards hot cores in star-forming regions and in the interstellar medium. An increasing body of evidence from millimetre interferometers suggests that many of these form at the interfaces between protostellar outflows and their natal molecular clouds. However, current models have remained unable to explain the origin of the observational bias towards wide-angled 'brandy snifter' shaped outflows over narrower 'champagne flute' shapes in carbon monoxide imaging. Furthermore, these wide-angled systems exhibit unusually high abundances of the molecular ion HCO+. We present results from a chemodynamic model of such regions where a rich chemistry arises naturally as a result of turbulent mixing between cold, dense molecular gas and the hot, ionized outflow material. The injecta drives a rich and rapid ion-neutral chemistry in qualitative and quantitative agreement with the observations. The observational bias towards wide-angled outflows is explained naturally by the geometry-dependent ion injection rate causing rapid dissociation of CO in the younger systems.
dc.publisherOxford University Press (OUP)
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland
dc.subjectism: jets and outflows
dc.subjectism: molecules
dc.subjectyoung stellar objects
dc.subjectstar-forming region
dc.subjectmolecular outflow
dc.subjecthco+ emission
dc.subjectngc 1333
dc.subjecthh 46
dc.titleChampagne flutes and brandy snifters: modelling protostellar outflow-cloud chemical interfaces

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