First results of the Central-East-South European Binary Star Study Group (CESEB)
Several eclipsing binary systems have been selected for combined spectral and photometric observations using the Bulgarian NAO 2 m telescope and several smaller telescopes located at various places in the CESE region. Preliminary results, based on a pilot study started in 2001, about radial velocity and light curve variations of the active WUMa system LS Del are presented here.
KeywordsEclipsing binaries Radial velocity curve analysis Individual: LS Del
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