14. NSVS 801195, a W Ursae Majoris Binary System with Three Stellar Spots

Elijah Halliwell Ball State University
Faculty Sponsor(s): Robert Berrington Ball State University
We investigate a eclipsing binary star denoted as NSVS 801195 using multi-band ensemble differential aperture photometry in the bands of Johnson B, Johnson V, and the Cousins R filter. Images were taken in April, 2017 and between February, 2018 and May, 2018. All images were taken with the use of Ball State University Observatory 20-inch (0.5 m) telescope. Photometry was reduced by an open source package called AstroImageJ (AIJ). All photometry was analyzed by the PHysics Of Eclipsing BinariEs (PHOEBE) software suite. PHOEBE provides a convenient Graphical User Interface (gui) to the Wilson-Devinney code for modeling binary systems. Our analysis shows that NSVS 801195 is consistent with an over-contact eclipsing binary star in poor thermal contact with surface temperatures of T = 5470 ± 377 and an orbital period of the system of 0.405898 ± 0.000015 days. Further details of best fit models are presented.
Physics & Astronomy
Poster Presentation

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Irwin Library Lower Level