Abstract
An unexpected empirical fact, a dependence of the observed luminosities inhigh excitation emission lines – 1240 NV, 1400 SiIV, 1550 CIV, 1640 HeII– on the intercomponent distance a of RS CVn type close binary systems,is revealed. It is assumed that those high excitation emission lines aregenerated most probably in a cone-like region between the Lagrangian pointL 1 and the surface of the primary component of the system. Thebehavior of high excitation emission lines at various phases of theeclipse in the case of two binary systems, SX Cas and 22 Vul, indicatesthe possibility of existence of such a `Lagrangian cone' in the structureof common chromospheres – roundchroms – of close binary systems as amain source of generation of high excitation emission lines.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Ake, T.B., Parsons, S.B. and Kondo, Y.: 1985, Astrophys.J. 298, 772.
Ayres, T.A., Marsted, N.C. and Linsky, J.L.: 1981, Astrophys.J. 247, 545.
Basri, G., Laurent, R. and Walter, F.H.: 1985, Astrophys.J. 298, 761.
Belvedere, G. and Molteni, D.: 1993, Astron.Astrophys. 280, 525.
Bisikalo, D.V., Boyarchuk, A.A., Kuznetsov, O.A. and Chechetkin, V.M.: 1997, astro-ph/9802039.
Bisikalo, D.V., Harmanec, P. Boyarchuk, A.A., Kuznetsov, O.A. and Hadrava, P.: 2000, Astron. Astrophys. 353, 1009.
Engvold, O., Ayers, T.A., Engaroy, F., Jensen, E. and Joras, P.B., et al.: 1988, Astron.Astrophys. 192, 234.
Flannery, B.: 1975, Mon.Not.R.Astron.Soc. 170, 325.
Gurzadyan, G.A.: 1996, Astrophys.Space Sci. 241, 211.
Gurzadyan, G.A.: 1997a, New Astron. 2, 31.
Gurzadyan, G.A.: 1997b, Mon.Not.R.Astron.Soc. 290, 607.
Gurzadyan, G.A.: 1997c, The Physics and Dynamics of Planetary Nebulae, Springer-Verlag.
Gurzadyan, G.A.: 1998, Astrophys.Space Sci. 257, 223.
Middlekoop, F. and Zwaan, C.: 1981, Astron.Astrophys. 101, 26.
Molteni, D., Belvedere, G. and Lanzafame, G.: 1991, Mon.Not.R.Astron.Soc. 249, 748.
Nagasawa, M., Matsuda, T. and Kuwahara, K.: 1991, Num.Astrophys.Jpn. 2, 27.
Paczynski, B. and Sienkewicz, R.: 1972, Acta Astron. 22, 73.
Plavec, M.J., Weland, J.L. and Koch, R.H.: 1982, Astrophys.J. 256, 206.
Oranje, B.J.: 1986, Astron.Astrophys. 154, 185.
Schrijever, C.J. and Zwaan, C.: 1991, Astron.Astrophys. 251, 183.
Sawada, K. and Madsuda, T.: 1992, Mon.Not.R.Astron.Soc. 255, 17.
Strassmeier, K.G., Hall, D.S., Fekel, F.C. and Scheck, M.: 1993, Astron.Astrophys.Suppl. 101, 173.
Waener, B. and Peters, W.L.: 1972, Mon.Not.R.Astron.Soc. 160, 15.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gurzadyan, G. High excitation emission lines in binary systems with roundchroms. Astrophysics and Space Science 274, 785–798 (2000). https://doi.org/10.1023/A:1026540126992
Issue Date:
DOI: https://doi.org/10.1023/A:1026540126992