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dc.contributor.authorEmonts, B.H.C.
dc.contributor.authorNorris, R.P.
dc.contributor.authorFeain, I.
dc.contributor.authorMiley, G.
dc.contributor.authorSadler, E.M.
dc.contributor.authorVillar-Martin, M.
dc.contributor.authorMao, M.Y.
dc.contributor.authorOosterloo, T.A.
dc.contributor.authorEkers, R.D.
dc.contributor.authorStevens, J.B.
dc.contributor.authorWieringa, M. H.
dc.contributor.authorCoppin, Kristen
dc.contributor.authorTadhunter, C.N.
dc.date.accessioned2014-01-23T16:00:34Z
dc.date.available2014-01-23T16:00:34Z
dc.date.issued2011-07-01
dc.identifier.citationEmonts , B H C , Norris , R P , Feain , I , Miley , G , Sadler , E M , Villar-Martin , M , Mao , M Y , Oosterloo , T A , Ekers , R D , Stevens , J B , Wieringa , M H , Coppin , K & Tadhunter , C N 2011 , ' CO observations of high-z radio galaxies MRC 2104-242 and MRC 0943-242 : Spectral-line performance of the Compact Array Broadband Backend ' Monthly Notices of the Royal Astronomical Society , vol. 415 , no. 1 , pp. 655-664 . https://doi.org/10.1111/j.1365-2966.2011.18737.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 2713629
dc.identifier.otherPURE UUID: 8cc64629-cd9c-42d5-857e-26ff12b1e156
dc.identifier.otherScopus: 79960115224
dc.identifier.otherORCID: /0000-0002-0729-2988/work/30423080
dc.identifier.urihttp://hdl.handle.net/2299/12665
dc.description.abstractWe present the first 7-mm observations of two high-redshift, Lyα-bright radio galaxies (MRC 2104-242 and MRC 0943-242) performed with the 2 × 2GHz instantaneous bandwidth of the Compact Array Broadband Backend (CABB) at the Australia Telescope Compact Array (ATCA). The aim was to search for CO(1-0) emission in these systems and test the millimetre capabilities of CABB for performing spectral line observations at high redshifts. We show that the stable band and enhanced velocity coverage of CABB, combined with hybrid array configurations, provide the ATCA with excellent 7-mm capabilities that allow reliable searches for the ground transition of CO at high redshifts. In this paper we explicitly discuss the calibration procedures used to reach our results. We set a firm upper limit to the mass of molecular gas in MRC 2104-242 (z= 2.5) of M. For MRC 0943-242 (z= 2.9) we derive an upper limit of M. We also find a tentative 3σ CO detection in the outer part of the giant Lyα halo that surrounds MRC 0943-242. The 30-33GHz radio continuum of MRC 2104-242 and MRC 0943-242 is reliably detected. Both radio sources show a spectral index of α≈-1.5 between 1.4 and 30GHz, with no evidence for spectral curvature within this range of frequencies.en
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.titleCO observations of high-z radio galaxies MRC 2104-242 and MRC 0943-242 : Spectral-line performance of the Compact Array Broadband Backenden
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.identifier.urlhttp://www.scopus.com/inward/record.url?scp=79960115224&partnerID=8YFLogxK
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeSubmitted Version
rioxxterms.versionSMUR
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-2966.2011.18737.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstyperestrictedAccess


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