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Synthetic Spectra of Magnetic White Dwarfs

Published online by Cambridge University Press:  12 April 2016

Stefan Jordan
Stefan Jordan*
Affiliation:
Institut für Theoretische PhysikundSternwarte der Universität KielOlshausenstraße 40, D-2300 Kiel 1, Federal Republic ofGermany

Abstract

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A new program for the calculation of theoretical spectra and wavelength dependend degrees of the linear and circular polarization for magnetic white dwarfs with hydrogen atmospheres has been developed. The main improvement compared to previous models is a more realistic treatment of the bound-free absorption and of the magnetooptical parameters arising from free electrons in the continuum. For the newly discovered magnetic white dwarf HS 1254+3430 a polar field strength of 18 MG was found. Calculations for the high field object Grw +70°8247 confirms the results of Wickramasinghe and Ferrario (320 MG) but gave a better fit to the spectrum at wavelengths larger than 6200 Å.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 114: White Dwarfs , 1989 , pp. 333 - 336
Copyright
Copyright © Springer-Verlag 1989

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