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Methods of the Long-term Radial-Velocity Variation Removal and their Application to Detect Duplicity of Several Be Stars

Published online by Cambridge University Press:  23 April 2012

J. Nemravová ,
P. Harmanec ,
P. Koubský  and
A. Miroshnichenko
J. Nemravová
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, CZ–180 00 Praha 8, Czech Republic email: janicka.ari@seznam.cz, hec@sirrah.troja.mff.cuni.cz
P. Harmanec
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, CZ–180 00 Praha 8, Czech Republic email: janicka.ari@seznam.cz, hec@sirrah.troja.mff.cuni.cz
P. Koubský
Affiliation:
Astronomical Institute of the Academy of Sciences, CZ-251 65 Ondřejov, Czech Republic email: koubsky@sunstel.asu.cas.cz
A. Miroshnichenko
Affiliation:
Department of Physics and Astronomy, University of North Carolina at Greensboro, Greensboro, NC 27402, USA email: a_mirosh@uncg.edu
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Abstract

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There are several types of binary stars which show non-periodical radial velocity variations with the amplitude larger than those connected with the orbital motion. The non-periodical changes have to be removed in order to study the orbital ones. We propose three removal techniques, two of which are based on the trend modeling with continuous functions and the third one that takes the orbital motion into account.

Keywords

methods: data analysistechniques: radial velocitiesstars: emission-lineBe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 319 - 320
Copyright
Copyright © International Astronomical Union 2012

References

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Vondrák, J. 1969, Bull. Astron. Inst. Czechosl., 20, 349Google Scholar
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