Search Results - "Ringwald, Frederick A."

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    New or Improved Orbital Periods of Cataclysmic Binaries by Thorstensen, John R, Ringwald, Frederick A, Taylor, Cynthia J, Sheets, Holly A, Peters, Christopher S, Skinner, Julie N, Alper, Erek H, Weil, Kathryn E

    Published 24-11-2017
    “…We present a table of 58 cataclysmic binary orbital periods determined using data from MDM Observatory. Most are heretofore unpublished; some are refinements…”
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    Journal Article
  2. 2

    A Spectroscopic Study of the Dwarf Nova KT Persei by Thorstensen, John R., Ringwald, Frederick A.

    “…We present Hα radial velocities of KT Per taken during quiescence (1989 November) and outburst (1990 February). Both data sets indicate an orbital period near…”
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