Wavelength Dependence of the Orbital Variability of the Eclipsing Nova-Like Object Dw Uma |
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| Authors: | N. I. Ostrova S. Yu. Shugarov I. L. Andronov |
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| Affiliation: | (1) Astronomical Observatory and Department of Astronomy, Odessa State University, T.G. Shevchenko Park, Odessa, Ukraine;(2) Sternberg Astronomical Institute, Moscow State University, Moscow, Russia |
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| Abstract: | Results of three-colour VRI CCD photometry are presented obtained during 11 nights in 2001. Twelve new minima timings are derived. The eclipse depth decreases with wavelength, being equal to 1.28, 1.13 and 1.02 for V, R and I, respectively. The instrumental magnitudes and colours are tabulated for the mid-eclipse, out-of-eclipse part and the eclipsed component. The V−R colour of the eclipsed component of emission is by 0.22 mag bluer than that for mid-eclipse, indicating a much higher temperature of the eclipsed region. |
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| Keywords: | stars nova-like individual DW UMa |
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