An Extensive Photometric Investigation of the W UMa System DK Cyg

Author:

Elkhateeb M. M.12,Nouh M. I.12,Elkholy E.12,Korany B.13

Affiliation:

1. Astronomy Department, National Research Institute of Astronomy and Geophysics, Helwan, Cairo 11421, Egypt

2. Physics Department, College of Science, Northern Border University, Arar 1321, Saudi Arabia

3. Physics Department, Faculty of Applied Science, Umm Al-Qura University, Makkah 715, Saudi Arabia

Abstract

DK Cyg (P=0.4707) is a contact binary system that undergoes complete eclipses. All the published photoelectric data have been collected and utilized to reexamine and update the period behavior of the system. A significant period increase with rate of 12.590 × 10−11 days/cycle was calculated. New period and ephemeris have been calculated for the system. A long term photometric solution study was performed and a light curve elements were calculated. We investigated the evolutionary status of the system using theoretical evolutionary models.

Publisher

Hindawi Limited

Subject

General Medicine

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