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    An excess of emission in the dark cloud LDN 1111 with the arcminute microkelvin imager

    Access Status
    Open access via publisher
    Authors
    Scaife, A.
    Hurley-Walker, Natasha
    Green, D.
    Davies, M.
    Grainge, K.
    Hobson, M.
    Lasenby, A.
    López-Caniego, M.
    Pooley, G.
    Saunders, R.
    Scott, P.
    Titterington, D.
    Waldram, E.
    Zwart, J.
    Date
    2009
    Collection
    • Curtin Research Publications
    Type
    Journal Article
    Metadata
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    Abstract

    We present observations of the Lynds' dark nebula LDN 1111 made at microwave frequencies between 14.6 and 17.2 GHz with the Arcminute Microkelvin Imager. We find emission in this frequency band in excess of a thermal free-free spectrum extrapolated from data at 1.4 GHz with matched u? coverage. This excess is >15s above the predicted emission. We fit the measured spectrum using the spinning dust model of Draine & Lazarian and find the best-fitting model parameters agree well with those derived from the Scuba data for this object by Visser, Richer & Chandler. © 2009 The Authors. Journal compilation © 2009 RAS.

    Citation
    Scaife, A. and Hurley-Walker, N. and Green, D. and Davies, M. and Grainge, K. and Hobson, M. and Lasenby, A. et al. 2009. An excess of emission in the dark cloud LDN 1111 with the arcminute microkelvin imager. Monthly Notices of the Royal Astronomical Society: Letters. 394 (1): pp. L46-L50.
    Source Title
    Monthly Notices of the Royal Astronomical Society: Letters
    URI
    http://hdl.handle.net/20.500.11937/5098
    DOI
    10.1111/j.1745-3933.2008.00607.x
    Department
    Curtin Institute of Radio Astronomy (Physics)
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