Hostname: page-component-8448b6f56d-xtgtn Total loading time: 0 Render date: 2024-04-18T04:41:20.155Z Has data issue: false hasContentIssue false
  • English
  • Français

The RS Canum Venaticorum Stars

Published online by Cambridge University Press:  07 August 2017

Marcello Rodonò
Marcello Rodonò*
Affiliation:
Istituto di Astronomia, Università degli Studi, and Osservatorio Astrofisico, I-95125 Catania, Italy

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.

The picture emerging from recent studies of RS CVn-type systems indicates the presence of very active stars showing typical solar-like activity phenomena, such as spots and flares, and possibly mutual interactions. The binary nature of RS CVns is certainly important in enforcing high stellar rotation rates, but the actual clue to the understanding of the intrinsic variability of the component stars resides in their internal structure, where the appropriate physical conditions are met for the generation and intensification of strong magnetic fields, as prescribed by the αω-dynamo models. The most significant results have been derived from multi-wavelength, coordinated observations and long-term monitoring programs.

Recent highlights include: a) the mapping of compact atmospheric structures at various temperature regimes by light curve modelling and spectral (Doppler) imaging techniques; b) clear evidence of long-term activity cycles on RS CVn and other types of interacting binaries; c) the detection and measurement of surface magnetic fields, as derived from the differential Zeeman splitting of spectral lines.

These results clearly demonstrate that the study of RS CVn stars can play a very fundamental role in the understanding of basic stellar physics, as well as in interpreting the characteristic variability of interacting binaries.

Type
Invited Papers
Information
Symposium - International Astronomical Union , Volume 151: Evolutionary Processes in Interacting Binary Stars , 1992 , pp. 71 - 82
Copyright
Copyright © Kluwer 1992 

References

Andrews, A.D., et al.: 1988, Astron. Astrophys. 204, 177.Google Scholar
Appenzeller, I., Dearbon, D.P.S.: 1984, Astrophys. J. 278, 689.Google Scholar
Appenzeller, I., Mundt, R.: 1989, Astron. Astrophys. Rev. 1, 291.Google Scholar
Baliunas, S.L., Vaughan, A.H.: 1985, Ann. Rev. Astr. Astrophys. 23, 379.CrossRefGoogle Scholar
Belvedere, G.: 1990, Mem. Soc. Astr. Ital. 61, 273.Google Scholar
Bianchini, A.: 1990, Astron. J. 99, 1941.Google Scholar
Blanco, C., Catalano, S., Marilli, E., Rodonò, M.: 1983, in Byrne and Rodonò (1983), p. 387.Google Scholar
Bopp, B.W.: 1983, in Byrne, and Rodonò, (1983), p. 363.Google Scholar
Bopp, B.W., Fekel, F.C.: 1977, Astron. J. 82, 490.CrossRefGoogle Scholar
Byrne, P.B., Doyle, J.G., Brown, A., Linsky, J.L., Rodonò, M. : 1987, Astron. Astrophys. 180, 172.Google Scholar
Byrne, P.B., Rodonò, M. (eds.): 1983, Activity in Red-Dwarf Stars , Proc. IAU Coll. 71, Reidel Publ. Co. CrossRefGoogle Scholar
Catalano, S.: 1983, in Byrne, and Rodonò, (1983), p. 343.Google Scholar
Catalano, S.: 1990, in NATO-ASI on Active Close Binaries , ed. Ibanog;lu, C., Kluwer Acad. Publ., p. 411.Google Scholar
Catalano, S., Rodonò, M.: 1967, Mem. Soc. Astr. Ital. 38, 395.Google Scholar
Catalano, S., Rodonò, M.: 1974, Publ. Astr. Soc. Pacific 86, 390.Google Scholar
Chisari, D., Lacona, G.: 1965, Mem. Soc. Astr. Ital. 36, 433.Google Scholar
Demircan, O.: 1990, in Active Close Binaries , ed. Ibanoglu, C., Kluwer Ac. Publ., p. 431.Google Scholar
Donati, J.-F., Semel, M.: 1991, in Tuominen, et al. (1991), p. 326.Google Scholar
Donati, J.-F., Semel, M., Rees, D., Taylor, K., Robinson, R.: 1990, Astron. Astrophys. 232, L1.Google Scholar
Eaton, J.A., Wu, C.C., Rucinski, S.M.: 1980, Astrophys. J. 239, 919.Google Scholar
Foing, B.H., et al.: 1991, work in progress.Google Scholar
Guinan, E.: 1991, These Proceedings .Google Scholar
Gibson, D.M.: 1983, in Byrne, and Rodonò, (1983), p. 273.Google Scholar
Golub, L.: 1983, in Byrne, and Rodonò, (1983), p. 83.Google Scholar
Haisch, B.M., Rodonò, M. (eds.): 1989, Solar and Stellar Flares, Sol. Phys. 121.Google Scholar
Haisch, B., Strong, K.T., Rodonò, M.: 1991, Ann. Rev. Astron. Astrophys. 29, in press.Google Scholar
Hackman, T., Piskunov, N.E., Poutanen, M., Strassmeier, K.G., Tuominen, I.: 1991, in Tuominen, et al. (1991), p. 321.Google Scholar
Hall, D.S.: 1972, Publ. Astron. Soc. Pacific 84, 323.CrossRefGoogle Scholar
Hall, D.S.: 1976, in Multiple Periodic Variable Stars , ed. Fitch, W.S., IAU Coll. 29, p. 287.Google Scholar
Hall, D.S.: 1987, Publ. Astr. Inst. Czech. Acad. Sci. , 70, 77.Google Scholar
Hall, D.S.: 1991, in Tuominen, et al. (1991), p. 353.Google Scholar
Houdebine, E.R., Foing, B.H., Rodonò, M.: 1990, Astron. Astrophys. 238, 249.Google Scholar
Kang, Y.W., Nha, Il-S.: 1991, in Surface Inhomogeneities in Late-type Stars , eds. Byrne, P.B., Mullan, D.J., Springer-Verlag, in press.Google Scholar
Lanza, A.F., Rodonò, M., Zappalà, R.A.: 1991, in NATO-ARW on Angular Momentum Evolution of Young Stars , eds. Catalano, S. and Stauffer, J.R., Kluwer Ac. Publ., p. 289.CrossRefGoogle Scholar
Linsky, J.L.: 1984, in Proc. Third Cambridge Workshop on Cool Stars, Stellar Systems and the Sun , eds. Baliunas, S.L. and Hartmann, L., Springer-Verlag, p. 244.Google Scholar
Linsky, J.L.: 1988, in Multiwavelength Astrophysics , ed. Córdova, L., Cambridge Univ. Press, p. 49.Google Scholar
Linsky, J.L.: 1991, Mem. Soc. Astr. Ital. , in press.Google Scholar
Linsky, J.L., et al.: 1989, Astron. Astrophys. 211, 173.Google Scholar
Maceroni, C., Bianchini, A., Rodonò, M., Van't Veer, F., Vio, R.: 1990, Astron. Astrophys. 237, 395 Google Scholar
Montmerle, T., Feigelson, E.D., Bouvier, J., Andrè, Ph.: 1991, in Protostars and Planets III , eds. Levy, E.H. and Lunine, J.I., Univ. Arizona Press, in press.Google Scholar
Neff, J.E., Walter, F.M., Rodonò, M.: 1989 Astron. Astrophys. 215, 79.Google Scholar
Noyes, R.W., Hartmann, L.W., Baliunas, S.L., Duncan, D.K., Vaughan, A.M.: 1984, Astrophys. J. 279, 778.CrossRefGoogle Scholar
Oliver, J.P.: 1974, , .Google Scholar
Oliver, J.P.: 1975, Publ. Astr. Soc. Pacific 87, 695.Google Scholar
Olson, E.C.: 1984, in Advances in Photoelectric Photometry 2, 15.Google Scholar
Pagano, I., Rodonò, M., Neff, J.E.: 1991, in Surface Inhomogeneities in Late-type Stars , eds. Byrne, P.B., Mullan, D.J., Springer-Verlag, in press.Google Scholar
Pallavicini, R., Tagliaferri, G., Stella, L.: 1990, Astron. Astrophys. 228, 403.Google Scholar
Patkos, L.: 1981, Astrophys. Letters 22, 1.Google Scholar
Piskunov, N.E.: 1991, in Tuominen, et al. (1991), p. 309.Google Scholar
Rodonò, M.: 1965, , .Google Scholar
Rodonò, M.: 1981, in NATO-ASI on Photometric and Spectroscopic Binary Systems , eds. Carling, E.B. and Kopal, Z., Reidel Publ. Co., p. 285.Google Scholar
Rodonò, M.: 1983, Adv. Space Res. 2, No. 9, 225.Google Scholar
Rodonò, M. : 1986, in Proc. Fourth Cambridge Workshop on Cool Stars, Stellar Systems and the Sun , eds. Zeilik, M. and Gibson, D.M., Springer-Verlag, p. 475.Google Scholar
Rodonò, M.: 1990, in Flare Stars in Star Clusters, Associations and the Solar Vicinity , IAU Symp. 137, eds. Mirzoyan, L.V., Pettersen, B.R., Tsvetkov, M.K., p. 371.Google Scholar
Rodonò, M.: 1991, in NATO-ARW on Angular Momentum Evolution of Young Stars , eds. Catalano, S. and Stauffer, J.R., Kluwer Ac. Publ., p. 207.CrossRefGoogle Scholar
Rodonò, M., et al.: 1986, Astron. Astrophys. 165, 135.Google Scholar
Rodonò, M., et al.: 1987, Astron. Astrophys. 176, 267.Google Scholar
Rodonò, M., et al.: 1991, work in progress .Google Scholar
Saar, S.H.: 1991, Mem. Soc. Astr. Ital. , in press.Google Scholar
Schmitt, J.H.M.R., et al.: 1991, Highlights of Astronomy , in press.Google Scholar
Strassmeir, K., Bopp, B.W.: 1991, Astron. Astrophys. , submitted.Google Scholar
Tuominen, I., Moss, D., Rüdiger, G. (eds.): 1991, The Sun and Cool Stars: activity, magnetism, dynamos , Proc. IAU Coll. 130, Springer-Verlag, Berlin.Google Scholar
Vaiana, G.S., et al.: 1981, Astrophys. J. 245, 163.Google Scholar
Vilhu, O.: 1987, in Proc. Fifth Cambridge Workshop on Cool Stars, Stellar Systems and the Sun , eds. Linsky, J.L. and Stencel, M.E., Springer-Verlag, p. 110.Google Scholar
Vogt, S.S., Hatzes, A.P.: 1991, in Tuominen, et al. (1991), p. 297.Google Scholar
Vogt, S.S., Penrod, G.D.: 1983, in Byrne, and Rodonò, (1983), p. 379.Google Scholar
Vogt, S.S., Penrod, G.D., Hatzes, A.P.: 1987, Astrophys. J. 321, 496.Google Scholar
Walter, F.M., Gibson, D.M., Basri, G.S.: 1983, Astrophys. J. 267, 665.Google Scholar
Walter, F.M., Neff, J.E., Gibson, D.M., Linsky, J.L., Rodonò, M., Gary, D.E., Butler, C.J.: 1987, Astron Astrophys. 186, 241.Google Scholar
White, N.E., Shafer, R., Parmar, A.N., Culhane, J.L.: 1987, in Proc. Fifth Cambridge Workshop on Cool Stars, Stellar Systems and the Sun , eds. Linsky, J.L. and Stencel, M.E., Springer-Verlag, p. 521.CrossRefGoogle Scholar