Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-10-31T12:16:13.233Z Has data issue: false hasContentIssue false
  • English
  • Français

Contact Binary Stars

Published online by Cambridge University Press:  12 April 2016

A.K. Dupree
A.K. Dupree*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 U.S.A.

Abstract:

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Ultraviolet and X-ray surveys of the W Ursae Majoris type stars are reviewed. These systems exhibit extended coronas and transition regions that are confined close to the optically determined surfaces. Correlations of X-ray activity with period or rotational velocity indicate a turn-over or saturation of emission at the short periods or high velocities found in the W UMa-type systems. For a number of systems, ultraviolet emission appears to be anti-correlated with the strength of X-ray emission. These observations are discussed in terms of solar structures, activity, and evolution.

Type
Session III: Observed Activity in Related Objects
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 447 - 461
Copyright
Copyright © Reidel 1983

References

REFERENCES

Bopp, B. W., and Rucinski, S. M. 1981, in “Fundamental Problems in the Theory of Stellar Evolution”, IAU Symposium No. 93, (Sugimoto, D., Lamb, D. Q., and Schramm, D. N., eds.), p. 177.Google Scholar
Bopp, B. W. and Stencel, R. 1981, Ap. J., 247, L131.Google Scholar
Carroll, R. W., Cruddace, R. G., Friedman, H., Byram, E. T., Wood, K., Meekins, J., Yentis, D., Share, G. H., and Chubb, T. A. 1980, Ap. J., 235, L77.Google Scholar
Cruddace, R. G., and Dupree, A. K. 1982, Ap. J., submitted.Google Scholar
Dupree, A. K., Black, J. H., Davis, R. J., Hartmann, L., and Raymond, J. C. 1979, in The First Year of IUE, ed. Willis, A. J., University College London, p. 217 Google Scholar
Dupree, A. K. 1980, in Highlights of Astronomy, Wayman, P. (ed.), 5, 263.Google Scholar
Dupree, A. K. 1982, in Second Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, Giampapa, M. S. and Golub, L., eds., SAO Special Report 392, Vol. 2, p. 3 Google Scholar
Dupree, A. K., and Dussault, M. 1981, Bull. A. A. S., 13, 873 Google Scholar
Dupree, A. K., and Dussault, M. 1982, in preparation.Google Scholar
Dupree, A. K., and Preston, S. 1980, in The Universe at Ultraviolet Wavelengths – The First Two Years of IUE, NASA Conf. Pub. 2171, p. 333.Google Scholar
Eaton, J. 1982, preprint.Google Scholar
Guinan, E. 1982, personal communication.Google Scholar
Hall, D. S. 1976, IAU Colloq. No. 29, “Multiple Periodic Variable Stars”, (Reidel: Dordrecht), p. 287.Google Scholar
Hartmann, L. W., Davis, R., Dupree, A. K., Raymond, J., Schmidtke, P.C., and Wing, R. F. 1979, Ap. J., 233, L69.Google Scholar
Hartmann, L., Dupree, A.K., and Raymond, J. C. 1982, Ap. J., 252, 214.Google Scholar
Rucinski, S. 1983, this volume.Google Scholar
Rucinski, S., and Vilhu, O. 1982, preprint.Google Scholar
Stern, R. A., Zolcinski, M. C., Antiochas, S. K., and Underwood, J. H. 1981, Ap. J., 249, 64.Google Scholar
Vaiana, G. S., et al. 1981, Ap. J., 245, 163.Google Scholar
Walter, F. M. 1981, Ap. J., 245, 677.Google Scholar
Walter, F. M., and Bowyer, C. S. 1981, Ap. J., 245, 671.Google Scholar
Webbink, R. F. 1976, Ap. J., 209, 829.CrossRefGoogle Scholar