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Photometric Classification of the Variable Star TU UMi  

Lee, Ho (Department of Earth Science Education, Korea National University of Education)
Kim, Seung-Lee (Korea Astronomy and Space Science Institute)
Jo, Mi-Sun (Department of Earth Science Education, Korea National University of Education)
Lee, Jae-Woo (Korea Astronomy and Space Science Institute)
Park, Hong-Suh (Department of Earth Science Education, Korea National University of Education)
Publication Information
Journal of the Korean earth science society / v.27, no.6, 2006 , pp. 695-700 More about this Journal
Abstract
We present B, V, I time series CCD photometry for the variable star TU UMi to classify its variable type. The observations were performed using 61cm telescope equipped with 2K CCD camera at Sobaeksan Optical Astronomy Observatory (SOAO). Judging from the amplitude ratio $({\Delta}i/{\Delta}v)$ and color variation $({\Delta}(b-v),\;{\Delta}(v-i))$. TU UMi should be a W UMa type eclipsing binary. We obtained two primary times of minimum lights (HJD 2453848.0446, HJD 2453848.2309) from our observations and determined new orbital elements (Min I=HJD 2452500.1344+0.37708907${\times}$E) for TU UMi.
Keywords
TU UMi; W UMa type eclipsing binary; photometry;
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