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Doppler Imaging of Stars with Roche–Geometry

Published online by Cambridge University Press:  09 August 2007

Zs. Kővári ,
J. Bartus ,
K. Oláh ,
K.G. Strassmeier ,
J.B. Rice ,
M. Weber  and
E. Forgács-Dajka
Zs. Kővári
Affiliation:
Konkoly Observatory of the Hungarian Academy of Sciences H-1525, Budapest, P.O. Box 67, Hungary email: kovari@konkoly.hu, olah@konkoly.hu
J. Bartus
Affiliation:
Astrophysicalisches Institut Potsdam An der Sternwarte 16, D-14482, Potsdam, Germany email: jbartus@aip.de, kstrassmeier@aip.de, mweber@aip.de
K. Oláh
Affiliation:
Konkoly Observatory of the Hungarian Academy of Sciences H-1525, Budapest, P.O. Box 67, Hungary email: kovari@konkoly.hu, olah@konkoly.hu
K.G. Strassmeier
Affiliation:
Astrophysicalisches Institut Potsdam An der Sternwarte 16, D-14482, Potsdam, Germany email: jbartus@aip.de, kstrassmeier@aip.de, mweber@aip.de
J.B. Rice
Affiliation:
Department of Physics & Astronomy, Brandon University Brandon, MB, R7A 6A9, Canada email: rice@brandonU.ca
M. Weber
Affiliation:
Astrophysicalisches Institut Potsdam An der Sternwarte 16, D-14482, Potsdam, Germany email: jbartus@aip.de, kstrassmeier@aip.de, mweber@aip.de
E. Forgács-Dajka
Affiliation:
Department of Astronomy, Eötvös Loránd UniversityH-1518 Budapest, P.O. Box 32, Hungary email: E.Forgacs-Dajka@astro.elte.hu
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Abstract

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Tests are carried out on retrieving Doppler maps from distorted stars in close binaries to estimate how Doppler imaging may be aliased by ellipticity. Maps obtained for the distorted shape are compared with the results of the simple spherical approximation, using real data of the RS CVn-type close binary star ζ Andromedae.

Keywords

techniques: spectroscopicstars: activity(stars:) binaries: eclipsingstars: fundamental parameters (ellipticity, temperatures)stars: imagingstars: individual (ζ And)
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. 587 - 592
Copyright
Copyright © International Astronomical Union 2007

References

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