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Contact binaries of spectral type O

  • Kam-Ching Leung (a1) and Donald P. Schneider (a2)

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The eclipsing binaries UW CMa, AO Cas, and V729 Cyg have been systems of great interest for over fifty years. The light curves are complex and suffer significant changes on a time scale of months, but the primary attraction of these systems is that both components have O-type spectra; thus they present us with some of the few possibilities for direct measurement of absolute dimensions of very massive stars. Much effort has been expended on these systems, but no really consistent model has emerged.

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Copyright

References

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Leung, K. C., and Schneider, D. P.: 1978a, Astrophys. J. 222, pp. 924930.
Leung, K. C., and Schneider, D. P.: 1978b, Astrophys. J. 224, (in press).
Schneider, D. P., and Leung, K. C.: 1978, Astrophys. J. 223, pp. 202206.
Stothers, R.: 1972, Astrophys. J. 175, pp. 431452.
Wilson, R. E., and Devinney, E. J.: 1971, Astrophys. J. 166, pp 605619.

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