AAVSO: American Association of Variable Star Observers

Multi-filter Photometric Analysis of W Ursae Majoris (W UMa) Type Eclipsing Binary Stars KID 11405559 and V342 Boo

Volume 47 number 2 (2019)

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Tatsuya Akiba
University of Colorado Boulder, Department of Astrophysical and Planetary Sciences, 2000 Colorado Ave, Duane Physics Building, Rm. E226, Boulder, CO 80309; address email correspondence to gokhale@truman.edu
Andrew Neugarten
Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohōkū Place, Hilo, HI 96720
Charlyn Ortmann
Truman State University, 100 E. Normal Street, Kirksville, MO 63501; gokhale@truman.edu
Vayujeet Gokhale
Truman State University, 100 E. Normal Street, Kirksville, MO 63501; gokhale@truman.edu

Abstract

We present light curve analysis of two variable stars, KID 11405559 and V342 Boo. KID 11405559 is selected from the Kepler Eclipsing Binary Catalog published by Kirk et al. (2016) and V342 Boo from a list of eclipsing binaries published by Kreiner (2004). In this paper, we present the light curves for these two objects using data collected at the 31-inch NURO telescope at Lowell Observatory in Flagstaff, Arizona, in three filters: Bessell B, V, and R. We generate truncated twelve-term Fourier fits for the light curves and quantify the O’Connell effect exhibited by these systems by calculating the difference ΔI in the heights of the primary and secondary maxima: the “Light Curve Asymmetry” (LCA) and the “O’Connell Effect Ratio” (OER). Additionally, we use the Fourier coefficients from the Fourier fit to confirm that KID 11405559 and V342 Boo are W UMa type eclipsing binary stars.