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Characterization of the MALT90 Survey and the Mopra Telescope at 90 GHz

dc.contributor.authorFOSTER, Jonathan B.
dc.contributor.authorRATHBORNE, Jill M.
dc.contributor.authorSANHUEZA, Patricio
dc.contributor.authorCLAYSMITH, Chris
dc.contributor.authorWHITAKER, J. Scott
dc.contributor.authorJACKSON, James M.
dc.contributor.authorMASCOOP, Joshua L.
dc.contributor.authorWIENEN, Marion
dc.contributor.authorBREEN, Shari L.
hal.structure.identifierFORMATION STELLAIRE 2013
dc.contributor.authorHERPIN, Fabrice
hal.structure.identifierFORMATION STELLAIRE 2013
dc.contributor.authorDUARTE-CABRAL, A.
dc.contributor.authorCSENGERI, Timea
dc.contributor.authorCONTRERAS, Yanett
dc.contributor.authorINDERMUEHLE, Balt
dc.contributor.authorBARNES, Peter J.
dc.contributor.authorWALSH, Andrew J.
dc.contributor.authorCUNNINGHAM, Maria R.
dc.contributor.authorBRITTON, Tui R.
dc.contributor.authorVORONKOV, Maxim A.
dc.contributor.authorURQUHART, James S.
dc.contributor.authorALVES, João
dc.contributor.authorJORDAN, Christopher H.
dc.contributor.authorHILL, Tracey
dc.contributor.authorHOQ, Sadia
dc.contributor.authorBROOKS, Kate J.
dc.contributor.authorLONGMORE, Steven N.
dc.date.created2013-06-03
dc.date.issued2013
dc.identifier.issn1323-3580
dc.description.abstractEnWe characterize the Millimeter Astronomy Legacy Team 90 GHz (MALT90) Survey and the Mopra telescope at 90 GHz. We combine repeated position-switched observations of the source G300.968+01.145 with a map of the same source in order to estimate the pointing reliability of the position-switched observations and, by extension, the MALT90 survey; we estimate our pointing uncertainty to be 8 arcseconds. We model the two strongest sources of systematic gain variability as functions of elevation and time-of-day and quantify the remaining absolute flux uncertainty. Corrections based on these two variables reduce the scatter in repeated observations from 12-25% down to 10-17%. We find no evidence for intrinsic source variability in G300.968+01.145. For certain applications, the corrections described herein will be integral for improving the absolute flux calibration of MALT90 maps and other observations using the Mopra telescope at 90 GHz.
dc.language.isoen
dc.publisherCambridge University Press (CUP)
dc.title.enCharacterization of the MALT90 Survey and the Mopra Telescope at 90 GHz
dc.typeArticle de revue
dc.identifier.doi10.1017/pasa.2013.18
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.identifier.arxiv1306.0560
bordeaux.journalPublications of the Astronomical Society of Australia
bordeaux.pageid.e038
bordeaux.volume30
bordeaux.peerReviewedoui
hal.identifierhal-00830468
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00830468v1
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