A microwave survey of southern active stars

O. B. Slee, G. J. Nelson, R. T. Stewart, A. E. Wright, J. L. Innis, S. G. Ryan, Alan Vaughan

    Research output: Contribution to journalArticlepeer-review


    The results of a survey of 153 active-chromosphere stars made with the Parkes 64-m telescope at 5.0/8.4 GHz from 1981 to 1987 are reported. Microwave emission was detected from 70 stars on at least one occasion, with the highest detection rate of 68 percent from the RS CVn group. The Ca II stars and Algol-type binaries yielded detection rates of 44 and 30 percent, respectively. The maximum powers emitted by the stars at 5.0/8.4 GHz ranged over five orders of magnitude, with a median of 2.5 x 10 to the 10th W/Hz. The maximum brightness temperatures had a smaller range of three orders of magnitude, with a median of 3.6 x 10 to the 9th K.
    Original languageEnglish
    Pages (from-to)659-677
    Number of pages19
    JournalMonthly Notices of the Royal Astronomical Society
    Issue number4
    Publication statusPublished - 15 Dec 1987


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