First frequency analysis for three new members of the group of eclipsing binaries with a pulsating component
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We present the first light curves and pulsation analysis results for V729 Aql and two newly discovered eclipsing binaries, namely USNO-A2.0 0975-17281677 and USNO-A2.0 1200-03937339. Frequency search was applied on the residuals of their light curves and the results showed that their primary components pulsate in multiperiodic modes and lie well inside the frequency and temperature range of δ Scuti stars. Moreover, for USNO-A2.0 1200-03937339 two frequencies inside the γ Dor frequency range were also detected, but their origin is discussed. The photometric models of USNO-A2.0 1200-03937339 and V729 Aql are also presented, while their absolute parameters as well as the evolutionary status of their components were roughly estimated.
KeywordsMethods: data analysis Methods: observational Stars: binaries: eclipsing Stars: fundamental parameters Stars: variables: δ Scuti Stars: evolution Stars: individual: V729 Aql, USNO-A2.0 0975-17281677, USNO-A2.0 1200-03937339
This work was performed in the framework of PROTEAS project within GSRT’s KRIPIS action for A.L., funded by Hellas and the European Regional Development Fund of the European Union under the O.P. Competitiveness and Entrepreneurship, NSRF 2007–2013. In the present work the SIMBAD database, operated at CDS, Strasbourg, France, and Astrophysics Data System Bibliographic Services (NASA) have been used. This work has also made use of SDSS (http://www.sdss.org/). Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. We thank the anonymous referee for his/her valuable comments, which improved the quality of the present paper.
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