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Binary Frequency Among Pre-Main Sequence Stars in Taurus and Ophiuchus

Published online by Cambridge University Press:  14 August 2015

M. Simon
M. Simon*
Affiliation:
Astronomy Program, State University of New York at Stony Brook, Stony Brook, N.Y. 11794, U.S.A.

Abstract

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The lunar occultation technique applied in the IR offers a powerful means of identifying binaries among obscured young stars. Our program has revealed binaries with separations from 1 to 100 AU in the Taurus and Ophiuchus star forming regions to about K=9 mag. To date, 29 objects have been observed; 6 were discovered to be binaries. The observed binary frequency is about half that expected from the binary statistics of a comparable sample of field stars. The discrepancy is probably attributable to our insensitivity to binary systems with secondary mass much less than that of the primary.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 8: Highlights of Astronomy. As presented at the XXth General Assembly of the IAU, 1988 , 1989 , pp. 117 - 118
Copyright
Copyright © Kluwer 1989

References

Abt, H.A. 1983, Ann. Rev. Astr. Ap., 21, 343.CrossRefGoogle Scholar
Chelli, A. et al. 1988, Astr.Ap., in press.Google Scholar
Dyck, H.M. et al. 1982, Ap.J.Lett., 255, L103.CrossRefGoogle Scholar
Mathieu, R.D. 1988, these proceedings.Google Scholar
Mundt, R. et al. 1983, Ap.J., 260, 229.CrossRefGoogle Scholar
Simon, M. et al. 1987, Ap.J., 320, 344.CrossRefGoogle Scholar