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The Influence of Binarity on Stellar Activity

Published online by Cambridge University Press:  12 July 2007

Katalin Oláh
Katalin Oláh*
Affiliation:
Konkoly Observatory, 1525 Budapest, P.O. Box 67, Hungary email: [email protected]
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Abstract

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Activity of late type stars is enhanced by fast rotation, which is maintained in nearly synchronized close binary systems. Magnetic activity originates in the deep convection zones of stars from where magnetic flux tubes emerge to their surfaces. The gravitational forces in binaries help the clustering of activity features giving rise to active longitudes. These preferred longitudes are observed in binaries from dwarfs to giants. Differential rotation is found in many active stars that are components of binary systems. If these binaries are circularized and nearly synchronized, then there will be a corotation latitude in their surfaces, and its position can be determined by observations and by theoretical calculations. Enhanced activity in binaries could have a reverse effect as well: strong magnetism in a binary component can modify the orbital period by the cyclic exchange of kinetic and magnetic energy in its convective envelope.

Keywords

stars: spots – stars: activity – stars: atmospheres – stars: late-type – stars: magnetic fields – stars: binaries: close
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 442 - 452
Copyright
Copyright © International Astronomical Union 2007

References

Applegate, J.H. 1992, ApJ 385, 621, 99CrossRefGoogle Scholar
Applegate, J.H. & Patterson, J., 1987, ApJ 322, LCrossRefGoogle Scholar
Covas, E., Moss, D. & Tavakol, R. 2005, A&A 429, 657 Google Scholar
Croll, B., Walker, G.A.H., Kuschnig, R., & Matthews, J.M. 2006, ApJ 648, 607 CrossRefGoogle Scholar
Hall, D.S. 1990, in: Active Close Binaries, NATO ASI Series Kluwer, C., ed.: Ibanoglu, C., Vol. 319, p. 95 CrossRefGoogle Scholar
Hall, D.S. 1991, ApJ 380, L85 CrossRefGoogle Scholar
Hall, D.S. 1994, IAPPP Comm. No. 54, 1 Google Scholar
Holzwarth, V. 2004, AN 325, 408 Google Scholar
Holzwarth, V. & Schüssler., M. 2002, AN 323, 399 Google Scholar
Holzwarth, V. & Schüssler., M. 2003a, A&A 405, 291 Google Scholar
Holzwarth, V. & Schüssler., M. 2003b, A&A 405, 303 Google Scholar
Kjurkchieva, D.P., Marchev, D.V., Heckert, P.A., & Ordway, J.I. 2005, AJ 129, 1084 CrossRefGoogle Scholar
Kövári, Zs. & Bartus, J. 1997, A&A 323, 801 Google Scholar
Kövári, Zs., Strassmeier, K.G., Granzer, T., Weber, M., Oláh, K., & Rice, J.B. 2004, A&A 417, 1047 Google Scholar
Lanza, A. & Rodonò, M. 2004, AN 325, 393 Google Scholar
Marsch, T.R. & Prongle, J.E., 1990, ApJ 365, 677 CrossRefGoogle Scholar
Montes, D., Fernández-Figueroa, M.J., Cornide, M. & De Castro, E. 1996, A&A 312, 221 Google Scholar
Moss, D. 2005, A&A 432, 249 Google Scholar
Oláh, K. 2006, AP&SS 304, 145 Google Scholar
Oláh, K. Eaton, J.A., Hall, D.S., & Henry, G.W. et al. . 1985, AP&SS 108, 137 Google Scholar
Oláh, K., Strassmeier, K.G. & Granzer, T. 2002a, AN 323, 453 Google Scholar
Oláh, K., Strassmeier, K.G. & Weber, M. 2002b, A&A 389, 202 Google Scholar
Oláh, K., Jurcsik, J., & Strassmeier, K.G. 2003, A&A 410, 685 Google Scholar
Pribulla, T., Chochol, D. & Milano, L. 2000, A&A 362, 169 Google Scholar
Ransom, R.R., Bartel, N., Bietenholz, M.F., Lebach, D.E. et al. . 2002, ApJ 572, 487 CrossRefGoogle Scholar
Schrijver, C.J. & Zwaan, K., 2000, Solar and Stellar Magnetic Activity, Cambridge Astrophysical Series No. 34, Cambridge University Press CrossRefGoogle Scholar
Scharlemann, E.T. 1981, ApJ 246, 292 CrossRefGoogle Scholar
Scharlemann, E.T. 1982, ApJ 253, 298 CrossRefGoogle Scholar
Schüssler, M. 1996, in Proceedings of IAU Symp. No. 176: Stellar Surface Structure, eds. Strassmeier, & Linsky, P. 269CrossRefGoogle Scholar
Schüssler, M. & Solanki, S. 1992, A&A 264, L13 Google Scholar
Strassmeier, K.G. & Bartus, J. 2000, A&A 354, 537 Google Scholar
Strassmeier, K.G., Boyd, L.J., Epand, D.H. & Granzer, Th. 1997, PASP 109, 697 CrossRefGoogle Scholar
Vogt, S.S., Hatzes, A.P., Misch, A.A. & Kürster, M. 1999, ApJS 121, 547 CrossRefGoogle Scholar
Weber, M. & Strassmeier, K.G. 1998, A&A 330, 1029 Google Scholar
Weber, M., Strassmeier, K.G. & Washuettl, A. 2005, AN 326, 287 Google Scholar
Zeilik, M., Cox, D.A., de Blasi, C., Rhodes, M. & Budding, E. 1989, ApJ 345, 991 CrossRefGoogle Scholar