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Hα Photometry of Two Contact Binaries |
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| Authors: | Szilárd Csizmadia Zsolt K?vári Péter Klagyivik |
| Institution: | 1. Konkoly Observatory, P. O. Box. 67, H-1525, Budapest, Hungary 2. E?tv?s Loránd University, Budapest, Hungary |
| Abstract: | We carried out optical and Hα photometry of two contact binaries (V861 Herculis, EQ Tauri). The light curve modeling revealed stellar spots in both contact systems and strong Hα excess in the position of the observed stellar spots. A correlation was found between the V−R and R−Hα colour indices of V861 Her. |
| Keywords: | Stars: activity of Binaries: contact Stars: individual: V861 Her EQ Tau Stars: late-type Starspots |
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