dc.contributor.author | Hindson, Luke | |
dc.contributor.author | Thompson, M. A. | |
dc.contributor.author | Urquhart, J.S. | |
dc.contributor.author | Faimali, A. | |
dc.contributor.author | Clark, J. S. | |
dc.contributor.author | Davies, B. | |
dc.date.accessioned | 2012-07-30T14:00:54Z | |
dc.date.available | 2012-07-30T14:00:54Z | |
dc.date.issued | 2012-04 | |
dc.identifier.citation | Hindson , 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.issn | 0035-8711 | |
dc.identifier.other | ORCID: /0000-0001-5392-909X/work/30970805 | |
dc.identifier.uri | http://hdl.handle.net/2299/8751 | |
dc.description.abstract | We 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.extent | 13 | |
dc.format.extent | 3220474 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.title | The G305 star-forming complex : a wide-area radio survey of ultracompact H ii regions | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
dc.date.embargoedUntil | 2012-11-01 | |
rioxxterms.versionofrecord | 10.1111/j.1365-2966.2012.20567.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |