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Spectroscopic analysis of eclipsing SB2 stars: a case study

Published online by Cambridge University Press:  25 February 2014

H. Lehmann ,
J. Southworth ,
A. Tkachenko ,
K. Pavlovski ,
C. Maceroni  and
H. Ak
H. Lehmann
Affiliation:
Thüringer Landessternwarte Tautenburg, Germany
J. Southworth
Affiliation:
Keele University, Staffordshire, UK
A. Tkachenko
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Belgium
K. Pavlovski
Affiliation:
Department of Physics, University of Zagreb, Croatia
C. Maceroni
Affiliation:
INAF-Osservatorio Astronomico di Roma, Italy
H. Ak
Affiliation:
Pennsylvania State University, US Erciyes University, Kayseri, Turkey
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Abstract

The investigation of eclipsing spectroscopic binaries provides basic parameters of stars in a direct way. Whereas the measurable absolute masses can be used to calibrate stellar evolutionary scenarios, the effective temperatures derived from spectroscopic analysis are an important input to light curve and asteroseismic modelling. We compare different methods for investigating eclipsing SB2 stars focusing on radial velocity determination and spectrum decomposition and analysis. Used methods are the two-dimensional cross-correlation technique todcor, spectral disentangling with the Fourier transform-based korel program, and a grid search-based method of spectrum analysis using spectrum synthesis. The study is based on the investigation of two eclipsing SB2 stars observed by the Kepler satellite mission.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 64: Setting a New Standard in the Analysis of Binary Stars , 2013 , pp. 219 - 227
Copyright
© EAS, EDP Sciences, 2014

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