Publication:
Australia Telescope Compact Array 1.2-cm observations of the massive star-forming region G305.2+0.2

dc.contributor.author Walsh, Andrew en_US
dc.contributor.author Chapman, J en_US
dc.contributor.author Burton, Michael en_US
dc.contributor.author Wardle, M en_US
dc.contributor.author Millar, Tom en_US
dc.date.accessioned 2021-11-25T12:56:05Z
dc.date.available 2021-11-25T12:56:05Z
dc.date.issued 2007 en_US
dc.description.abstract We report on Australia Telescope Compact Array observations of the massive star-forming region G305.2+0.2 at 1.2 cm. We detected emission in five molecules towards G305A, confirming its hot core nature. We determined a rotational temperature of 26 K for methanol. A non-local thermodynamic equilibrium excitation calculation suggests a kinematic temperature of the order of 200 K. A time-dependent chemical model is also used to model the gas-phase chemistry of the hot core associated with G305A. A comparison with the observations suggest an age of between 2 x 10(4) and 1.5 x 10(5) yr. We also report on a feature to the south-east of G305A which may show weak Class I methanol maser emission in the line at 24.933 GHz. The more evolved source G305B does not show emission in any of the line tracers, but strong Class I methanol maser emission at 24.933 GHz is found 3 arcsec to the east. Radio continuum emission at 18.496 GHz is detected towards two H II regions. The implications of the non-detection of radio continuum emission towards G305A and G305B are also discussed. en_US
dc.identifier.issn 0035-8711 en_US
dc.identifier.uri http://hdl.handle.net/1959.4/38591
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/au/ en_US
dc.source Legacy MARC en_US
dc.subject.other masers en_US
dc.subject.other stars : formation en_US
dc.subject.other ISM : molecules en_US
dc.subject.other infrared : ISM en_US
dc.title Australia Telescope Compact Array 1.2-cm observations of the massive star-forming region G305.2+0.2 en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.accessRights.uri http://purl.org/coar/access_right/c_14cb
unsw.relation.faculty Science
unsw.relation.ispartofissue 4 en_US
unsw.relation.ispartofjournal Monthly Notices of the Royal Astronomical Society en_US
unsw.relation.ispartofpagefrompageto 1703-1714 en_US
unsw.relation.ispartofvolume 380 en_US
unsw.relation.originalPublicationAffiliation Walsh, Andrew, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Chapman, J en_US
unsw.relation.originalPublicationAffiliation Burton, Michael, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Wardle, M en_US
unsw.relation.originalPublicationAffiliation Millar, Tom en_US
unsw.relation.school School of Physics *
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