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CO abundances in a protostellar cloud: freeze-out and desorption in the envelope and outflow of L483

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dc.contributor.author Redman, Matt P. en
dc.date.accessioned 2011-03-10T16:55:50Z en
dc.date.available 2011-03-10T16:55:50Z en
dc.date.issued 2007 en
dc.identifier.citation P.B. Carolan, M.P. Redman, E. Keto, J.M.C. Rawlings...(2007)CO abundances in a protostellar cloud: freeze-out and desorption in the envelope and outflow of L483, P.B. Carolan, M.P. Redman, E. Keto, J.M.C. Rawlings en
dc.identifier.uri http://hdl.handle.net/10379/1726 en
dc.description.abstract CO isotopes are able to probe the different components in protostellar clouds. These components, core, envelope and outflow have distinct physical conditions and sometimes more than one component contributes to the observed line profile. In this study we determine how CO isotope abundances are altered by the physical conditions in the different components. We use a 3D molecular line transport code to simulate the emission of four CO isotopomers, 12CO J=2-1, 13CO J=2-1, C18O J=2-1 and C17O J=2-1 from the Class 0/1 object L483, which contains a cold quiescent core, an infalling envelope and a clear outflow. Our models replicate JCMT (James Clerk Maxwell Telescope) line observations with the inclusion of freeze-out, a density profile and infall. Our model profiles of 12CO and 13CO have a large linewidth due to a high velocity jet. These profiles replicate the process of more abundant material being susceptible to a jet. C18O and C17O do not display such a large linewidth as they trace denser quiescent material deep in the cloud. en
dc.format application/pdf en
dc.language.iso en en
dc.subject Astrophysics en
dc.title CO abundances in a protostellar cloud: freeze-out and desorption in the envelope and outflow of L483 en
dc.type Article en
dc.local.publishedsource http://arxiv.org/pdf/0710.2814 en
dc.description.peer-reviewed peer-reviewed en
dc.local.authors P.B. Carolan, M.P. Redman, E. Keto, J.M.C. Rawlings en
dc.local.arxivid 0710.2814 en

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