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| Paper: |
DD Mon and XY UMa: CCD Photometry and Modeling of Two Close Binary Systems with Solar-Type Components |
| Volume: |
435, Binaries – Key to Comprehension of the Universe |
| Page: |
351 |
| Authors: |
Gazeas, K.; Liakos, A.; Niarchos, P. |
| Abstract: |
We present our ground-based CCD observations of the close binary systems DD Mon and XY UMa in B, V, R and I bands. The light curves are analyzed using the Wilson-Devinney code (W-D) for the derivation of the geometric and photometric elements of the systems. We compare the methods of photometric and spectroscopic mass ratio determination in these binaries, as a function of all typical difficulties, which arise during the analysis of such systems (light curve asymmetries, third light etc). Finally, a new spot model is suggested for the eclipsing system XY UMa, which belongs to the RS CVn type of active binaries. |
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