Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Characterisation of the MALT90 survey and the Mopra telescope at 90 GHz

    193529_98135_displayFulltextwalsh.pdf (1.949Mb)
    Access Status
    Open access
    Authors
    Walsh, Andrew
    Foster, J. B.
    Rathborne, J. M.
    Sanhueza, P.
    Claysmith, C.
    Whitaker, J. S.
    Jackson, J. M.
    Mascoop, J. L.
    Wienen, M.
    Breen, S. L.
    Herpin, F.
    Duarte-Cabral, A.
    Csengeri, T.
    Contreras, Y.
    Indermuehle, B.
    Barnes, P. J.
    Cunningham, M. R.
    Britton, T. R.
    Voronkov, M. A.
    Urquhart, J. S.
    Alves, J.
    Jordan, C. H.
    Hill, T.
    Hoq, S.
    Brooks, K. J.
    Longmore, S. N.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Foster, J.B. and Rathborne, J.M. and Sanhueza, P. and Claysmith, C. and Whitaker, J.S. and Jackson, J.L. and Mascoop, J. et al. 2013. Characterisation of the MALT90 survey and the Mopra telescope at 90 GHz. Publications of the Astronomical Society of Australia. 30: pp. e038.
    Source Title
    Publications of the Astronomical Society of Australia
    DOI
    10.1017/pasa.2013.18
    ISSN
    1323-3580
    Remarks

    Copyright © 2013 Astronomical Society of Australia

    URI
    http://hdl.handle.net/20.500.11937/18209
    Collection
    • Curtin Research Publications
    Abstract

    We characterise the Millimetre Astronomy Legacy Team 90 GHz Survey (MALT90) 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 arcsec. 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.

    Related items

    Showing items related by title, author, creator and subject.

    • MALT90: The Millimetre Astronomy Legacy Team 90 GHz Survey
      Jackson, J.; Rathborne, J.; Foster, J.; Whitaker, J.; Sanhueza, P.; Claysmith, C.; Mascoop, J.; Wienen, M.; Breen, S.; Herpin, F.; Duarte-Cabral, A.; Csengeri, T.; Longmore, S.; Contreras, Y.; Indermuehle B.; Barnes, P.; Walsh, Andrew; Cunningham, M.; Brooks, K.; Britton, T.; Voronkov, M.; Urquhart, J.; Alves, J.; Jordan, C.; Hill, T.; Hoq, S.; Finn, S.; Bains, I.; Bontemps, S.; Bronfman, L.; Caswell, J.; Deharveng, L.; Ellingsen, S.; Fuller, G.; Garay, G.; Hindson, L.; Jones, P.; Lenfestey, C.; Lo, N.; Lowe, V.; Mardones, D.; Menten, K.; Minier, V.; Morgan, L.; Motte, F.; Muller, E.; Peretto, N.; Purcell, C.; Schilke, P.; Bontemps, S.; Schuller, F.; Titmarsh, A.; Wyrowski, F.; Zavagno, A. (2013)
      The Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey aims to characterise the physical and chemical evolution of high-mass star-forming clumps. Exploiting the unique broad frequency range and on-the-fly mapping ...
    • Pilot observations for MALT-45: a Galactic plane survey at 7 mm
      Jordan, C.; Walsh, Andrew; Lowe, V.; Lo, N.; Purcell, C.; Voronkov, M.; Longmore, S. (2013)
      We introduce the Millimetre Astronomer’s Legacy Team – 45 GHz (MALT-45) Galactic plane survey and describe pilot survey results with the Australia Telescope Compact Array (ATCA).The pilot survey was conducted to test the ...
    • MALT-45: A 7mm survey of the southern Galaxy - II. ATCA follow-up observations of 44GHz class I methanol masers
      Jordan, Christopher; Walsh, Andrew; Breen, S.; Ellingsen, S.; Voronkov, M.; Hyland, L. (2017)
      We detail interferometric observations of 44 GHz class I methanol masers detected by MALT-45 (a 7 mm unbiased auto-correlated spectral-line Galactic-plane survey) using the Australia Telescope Compact Array. We detect 238 ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.