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The Coronae of RS CVn Systems

Published online by Cambridge University Press:  14 August 2015

Frederick M. Walter ,
Philip A. Charles  and
Stuart Bowyer
Frederick M. Walter
Affiliation:
Space Sciences Laboratory University of California, Berkeley 94720
Philip A. Charles
Affiliation:
Space Sciences Laboratory University of California, Berkeley 94720
Stuart Bowyer
Affiliation:
Space Sciences Laboratory University of California, Berkeley 94720

Extract

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RS CVn systems [1] are close binaries consisting of two late-type stars, one of which has evolved to the base of the giant branch. In most cases, the systems appear to be the product of normal stellar evolutionary processes [2,3]. These systems have attracted much recent attention because they exhibit greatly exaggerated stellar activity in the form of strong chromospheric emission [1]. There is evidence that a large fraction of the surface is covered by dark spots [4]. They also exhibit radio emission [5,6], and quiescent and flaring soft X-ray emission [7-12]. If these stars are undergoing normal evolution, why then are they so peculiar?

Type
VII. The RS Canum Venaticorum Stars
Information
Symposium - International Astronomical Union , Volume 88: Close Binary Stars: Observations and Interpretation , 1980 , pp. 397 - 402
Copyright
Copyright © Reidel 1980 

References

1. Hall, D.S., in “Multiple Periodic Variable Stars”, Fitch, W.S., ed., (Reidel, Dordrecht), p. 287.Google Scholar
2. Morgan, J., and Eggleton, P.: 1979, M.N.R.A.S., 87, p. 661.CrossRefGoogle Scholar
3. Popper, D., and Ulrich, R.: 1977, Ap. J. (Lett.), 212, p. L131.Google Scholar
4. Eaton, J.A., and Hall, D.S.: 1979, Ap. J., 227, p. 907.Google Scholar
5. Owen, F.N., and Gibson, D.M.: 1978, A.J., 83, p. 1488.Google Scholar
6. Feldman, P.A., Taylor, A.R., Gregory, P.C., Seaquist, E.R. Balonek, T.J., and Cohen, N.L.: 1978, A.J., 83, p. 1471 Google Scholar
7. Walter, F., Charles, P., and Bowyer, S.: 1978, Ap. J. (Lett.), 225, p. L119.Google Scholar
8. Walter, F., Charles, P., and Bowyer, S.: 1978, A.J., 83, p. 1539.Google Scholar
9. Walter, F., Charles, P., and Bowyer, S.: 1978, B.A.A.S., 10, p.632.Google Scholar
10. Walter, F., Cash, W., Charles, P., and Bowyer, S.: 1979, submitted to Ap. J. Google Scholar
11. Charles, P., Walter, F., and Cash, W.: 1979, from “(COSPAR) X-ray Astronomy”, Baity, & Peterson, , eds., (Pergamon, New York), p. 129.Google Scholar
12. Charles, P., Walter, F., and Bowyer, S.: 1979, submitted to Nature.Google Scholar
13. Rothschild, R. et al.: 1979, Sp. Sci. Instr., in press.Google Scholar
14. Eggen, O.: 1978, I.B.V.S., 1426.Google Scholar
15. Cash, W., Bowyer, S., Charles, P., Lampton, M., Garmire, G., and Riegler, G.: 1978, Ap. J. (Lett.), 223, p. L21.CrossRefGoogle Scholar
16. White, N.E., Sanford, P.W., and Weiler, E.J.: 1978, Nature, 274, p. 561.Google Scholar
17. Rosner, R., Tucker, W.H., and Vaiana, G.S.: 1978, Ap. J., 220, p.643.Google Scholar
18. Vaiana, G.S., and Rosner, R.: 1978, ARAA, 16, p. 393.Google Scholar
19. Walter, F., Linsky, J., Bowyer, S., and Garmire, G.: 1979, submitted to Ap. J. (Lett.).Google Scholar