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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1573
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dc.contributor.authorSubrahmanyan, Ravi-
dc.contributor.authorGoss, W.M.-
dc.contributor.authorMegeath, S.T.-
dc.contributor.authorPeter, Barnes J.-
dc.date.accessioned2006-12-13T11:16:37Z-
dc.date.available2006-12-13T11:16:37Z-
dc.date.issued1997-09-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 1997, Vol.290, p431-438en
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/2289/1573-
dc.descriptionOpen Accessen
dc.description.abstractWe present 1-arcmin resolution radio images of the Galactic H ii region NGC 2024 made at 0.33 and 10.55 GHz. These are the highest dynamic range images of the nebula to date. The peak brightness in the 0.33-GHz radio continuum image indicates that the electron temperature is 6800-7600 K. The images clarify the structure of a thermal plume that is directed north from the H ii region and opposite to a unipolar molecular outflow found in the molecular cloud near the H ii region. We report the detection of H91alpha recombination lines from the plume: these data confirm that the plume is blueshifted relative to the molecular cloud. Finally, we discuss the relative merits of three possible explanations for the plume: that the plume results from the blueshifted counterjet to the CO outflow; that the plume is the continuation of the champagne flow observed in the denser parts of the H ii region; and that the plume is produced by the photoevaporation of molecular clumps apparent in a ^13CO map of the region.en
dc.format.extent8338 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherBlackwell Publishing for the Royal Astronomical Societyen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?1997MNRAS.290..431Sen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997MNRAS.290..431S&link_type=ARTICLE&db_key=ASTen
dc.rights(1997) Royal Astronomical Societyen
dc.subjectH II REGIONS,en
dc.subjectSM: INDIVIDUAL: NGC 2024,en
dc.subjectISM: JETS AND OUTFLOWS,en
dc.subjectRADIO CONTINUUM: ISM,en
dc.subjectRADIO LINES: ISMen
dc.titleA thermal plume in NGC 2024en
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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