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Chromospheric NLTE-Radiative-Transfer Modeling of dMe Stars

Published online by Cambridge University Press:  27 September 2017

P.M.Panagi ,
E. Houdebine ,
C.J. Butler  and
M. Rodonò
P.M.Panagi
Affiliation:
Armagh Observatory, Armagh, Northern Ireland BT61 9DG
E. Houdebine
Affiliation:
Laboratoire de Physique Stellaire et Planetaire, BP n10, 91371 Verrieres le Buisson, Cedex, France
C.J. Butler
Affiliation:
Armagh Observatory, Armagh, Northern Ireland BT61 9DG
M. Rodonò
Affiliation:
Instituto di Astronomia, Universita degli Studi I-95125 Catania, Italy

Abstract

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The formation of the Lyman and Balmer lines of Hydrogen at densities typical in dMe stars is shown to be very dependent on the atomic model used viz. the number of levels and line transitions. The effect of increasing the number of levels and line transitions on the line fluxes and ionization fraction is also discussed.

Type
Session III: Theory
Information
International Astronomical Union Colloquium , Volume 104 , Issue 2: Solar and Stellar Flares , 1989 , pp. 361 - 364
Copyright
Copyright © Kluwer 1989

References

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