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    New periodic 6.7 GHz class II methanol maser associated with G358.460−0.391

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    Date
    2015
    Author
    Maswanganye, J.P.
    Goedhart, S.
    Van der Walt, D.J.
    Booth, R.S.
    Gaylard, M.J.
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    Abstract
    Eight new class II methanol masers selected from the 6.7 GHz Methanol Multibeam survey catalogues I and II were monitored at 6.7 GHz with the 26 m Hartebeesthoek Radio Astronomy Observatory radio telescope for three years and seven months, from 2011 February to 2014 September. The sources were also observed at 12.2 GHz and two were sufficiently bright to permit monitoring. One of the eight sources, namely G358.460−0.391, was found to show periodic variations at 6.7 GHz. The period was determined and tested for significance using the Lomb–Scargle, epoch-folding and Jurkevich methods, and by fitting a simple analytic function. The best estimate for the period of the 6.7 GHz class II methanol maser line associated with G358.460−0.391 is 220.0 ± 0.2 d
    URI
    http://hdl.handle.net/10394/18418
    https://doi.org/10.1093/mnras/stu2306
    http://mnras.oxfordjournals.org/content/446/3/2696.full.pdf+html
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    • Faculty of Natural and Agricultural Sciences [4818]

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