EDP Sciences
Free access
Issue A&A
Volume 448, Number 1, March II 2006
Page(s) 283 - 292
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20053177

A&A 448, 283-292 (2006)
DOI: 10.1051/0004-6361:20053177

Separation of composite spectra: the spectroscopic detection of an eclipsing binary star

J. F. González and H. Levato

Complejo Astronómico El Leoncito (CASLEO), San Juan, Argentina
    e-mail: fgonzalez@casleo.gov.ar

(Received 1 April 2005 / Accepted 5 October 2005)

We present an iterative method that allows us to compute the individual spectra and radial velocities of the two stellar components of spectroscopic binaries. We applied this method to HD 143511 and detected the occurrence of eclipses at the conjunction phases. The orbital analysis provides minimum masses with errors of 1%. Absolute masses and radii were derived in two different ways: a) by combining information provided by radial velocities, rotational velocities, and spectral line intensities; and b) using light curves from the ASAS-3 database.

Key words: techniques: radial velocities -- stars: binaries: spectroscopic -- stars: fundamental parameters -- stars: individual: HD 143511 -- Galaxy: open clusters and associations: individual: NGC 6025

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Editor-in-Chief: T. Forveille
Letters Editor-in-Chief: J. Alves
Managing Editor: C. Bertout

ISSN: 0004-6361 ; e-ISSN: 1432-0746
Frequency: 12 volumes per year
Published by: EDP Sciences

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