Light Curves and Period Analysis of Beta Lyrae Stars

Light Curves and Period Analysis of Beta Lyrae Stars

We present the light-curve period analysis of 36 Beta Lyrae stars from the OMC Archive. We check the reference period of the sample by applying the phase dispersion minimization periodogram. From our research, we determine the orbital period of five stars in the sample. One of them is CP Psc, showin...

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Veröffentlicht in:The Astronomical journal 2024-01, Vol.167 (1), p.17
Hauptverfasser: Cortés, C. C., Garcés, J., Mennickent, R. E., Djurasevic, G.
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Beta Lyrae stars
Eclipsing binary stars
Light curve
Massive stars
Orbits
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container_issue 1
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container_title The Astronomical journal
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creator Cortés, C. C.
Garcés, J.
Mennickent, R. E.
Djurasevic, G.
description We present the light-curve period analysis of 36 Beta Lyrae stars from the OMC Archive. We check the reference period of the sample by applying the phase dispersion minimization periodogram. From our research, we determine the orbital period of five stars in the sample. One of them is CP Psc, showing a prominent hump in the light curve before the deeper eclipse, and revealing a period of 0.6847936 day. Additionally, we improved the previously published orbital period for 27 stars. Within this sample, we discovered three stars with the O’Connell effect, and we identified a system with a second period known as II Per, with an orbital period of 0.4798512 day and a long period 9.2724776 days. The light curve of V 747 Cen can be reproduced with a dark spot of temperature about 70% its surroundings, which covers one of the poles of the more massive star.
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subjects Beta Lyrae stars
Eclipsing binary stars
Light curve
Massive stars
Orbits
title Light Curves and Period Analysis of Beta Lyrae Stars
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