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dc.contributor.authorHindson, Luke
dc.contributor.authorThompson, M. A.
dc.contributor.authorUrquhart, J.S.
dc.contributor.authorFaimali, A.
dc.contributor.authorClark, J. S.
dc.contributor.authorDavies, B.
dc.date.accessioned2012-07-30T14:00:54Z
dc.date.available2012-07-30T14:00:54Z
dc.date.issued2012-04
dc.identifier.citationHindson , L , Thompson , M A , Urquhart , J S , Faimali , A , Clark , J S & Davies , B 2012 , ' The G305 star-forming complex : a wide-area radio survey of ultracompact H ii regions ' , Monthly Notices of the Royal Astronomical Society , vol. 421 , no. 4 , pp. 3418-3430 . https://doi.org/10.1111/j.1365-2966.2012.20567.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 952603
dc.identifier.otherPURE UUID: 0a1dd92d-3841-4855-ad0a-ee2573de6f58
dc.identifier.otherWOS: 000302620700059
dc.identifier.otherScopus: 84859625083
dc.identifier.otherORCID: /0000-0001-5392-909X/work/30970805
dc.identifier.urihttp://hdl.handle.net/2299/8751
dc.description.abstractWe present wide-area radio continuum 5.5 and 8.8 GHz (5.5 and 3.4 cm) Australia Telescope Compact Array observations of the complex and rich massive star-forming region G305. The aim of this study is to perform an un-targeted survey of the region in search of the compact radio emission associated with ultracompact (UC) H ii regions. Observations presented here encompass the entire complex and have a maximum resolution of similar to 1.5 x 1.4 arcsec and sensitivity of similar to 0.07 mJy beam-1. By applying a data reduction method that emphasizes small-scale structure, we are able to detect 71 compact radio sources distributed throughout the observed field. To explore the nature of these compact radio sources we compare to mid-infrared data and in this way identify 56 background sources, eight stellar radio sources, a single bright-rimmed cloud and six candidate UC H ii regions. The physical properties of these candidate UC H ii regions are determined and reveal that five candidates have peak properties consistent with known UC H ii regions with source radii ranging from 0.04 to 0.1 pc, emission measures from 2.56 to 10.3 x 10-6 pc cm-6 and electron densities of 0.341.03 x 104 cm-3. We comment on these sites of recent massive star formation within G305 and by comparing to other star formation tracers (masers, NH3 and young stellar objects) build a picture of the star formation history of the region. Using these results we estimate a lower limit to the star formation rate for the region of similar to 0.003 M circle dot yr-1.en
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleThe G305 star-forming complex : a wide-area radio survey of ultracompact H ii regionsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.date.embargoedUntil2012-11-01
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-2966.2012.20567.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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