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CzeV404 - an eclipsing dwarf nova in the period gap during its July 2014 superoutburst

Results of the CCD observations of CzeV404 Her are displayed. During the season of June-August 2014 we detected one outburst and one superoutburst of the star. Clear superhumps with the period of P_sh=0.10472(2) days were observed. The superhump period was decreasing with a high value of P_dot=-2.43(8) x 10^(-4). For 17 eclipses, we calculated an orbital period with the value of P_orb=0.0980203(6) days which indicates that CzeV404 Her belongs to period gap objects and it is the longest orbital period eclipsing SU UMa star. Based on superhump and orbital period determinations, the period excess 6.8 % +/- 0.02 % and the mass ratio q ~ 0.32 of the system were obtained.

preprint2014arXivOpen access
K. BakowskaA. OlechR. PospieszynskiF. MartinelliA. Marciniak
astro-ph.SR
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K. BakowskaA. OlechR. PospieszynskiF. MartinelliA. Marciniak

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