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Devarapalli Shanthi Priya & Jagirdar Rukmini

Photometric studies of two solar type marginal contact binaries in the Small Magellanic Cloud

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Mots-clés : astronomie, astrophysique, binaires, étoiles, photométrie, variabilité

Abstract

Using the Optical Gravitational Lensing Experiment catalogue, two contact binaries were studied using data in the V and I bands. The photometric solutions for the V and I bands are presented for two contact binaries OGLE 003835.24-735413.2 (V1) and OGLE 004619.65-725056.2 (V2) in Small Maglellanic Cloud. The presented light curves are analyzed using the Wilson-Devinney code. The results show that the variables are in good thermal and marginal geometrical contact with features like the O’Connell effect in V1. The absolute dimensions are estimated and its dynamical evolution is inferred. They tend to be solar type marginal contact binaries. The 3.6-m Devasthal Optical Telescope and the 4.0-m International Liquid Mirror Telescope of the Aryabhatta Research Institute of Observational Sciences (ARIES, Nainithal) can facilitate the continuous monitoring of such kind of objects which will help in finding the reasons behind their period changes and their impact on the evolution of the clusters.

Keywords : astronomy, astrophysics, binaries, photometry, stars, variability

To cite this article

Devarapalli Shanthi Priya & Jagirdar Rukmini, «Photometric studies of two solar type marginal contact binaries in the Small Magellanic Cloud», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 87 - Année 2018, Actes de colloques, First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India, 203 - 206 URL : https://popups.uliege.be:443/0037-9565/index.php?id=7651.

About: Devarapalli Shanthi Priya

Department of Astronomy, Osmania University, Hyderabad, Telangana – 500007, astroshanti@gmail.com

About: Jagirdar Rukmini

Department of Astronomy, Osmania University, Hyderabad, Telangana – 500007, rukminiouastro@yahoo.com