Discovery of five pre-main-sequence binaries in taurus

W. P. Chen, M. Simon, A. J. Longmore, R. R. Howell, J. A. Benson

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We report the progress of our infrared K band lunar occultation search for binaries among pre-main sequence stars. From the fall of 1986 to the fall of 1989, 13 objects have been observed, all in the Taurus star-forming region. Five new binaries have been discovered: DF Tau, DI Tau, FS Tau (Haro 6-5) A, FV Tau (Haro 6-8), and FW Tau, with projected separations ranging from 0″.01 to 0″.57. Including results reported previously, we have, to date, surveyed a total of 31 objects, 21 in Taurus and 10 in Ophiuchus, and have found nine double systems. The detected binary frequency (0.29) seems consistent with that of the solar-type main-sequence field stars.

Original languageEnglish
Pages (from-to)224-230
Number of pages7
JournalAstrophysical Journal
Issue number1
StatePublished - 1 Jul 1990


  • Clusters: associations
  • Occultations
  • Stars: binaries
  • Stars: pre-main-sequence


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