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arXiv · astro-ph/0303224

Period change of Superhumps in the WZ Sge-Type Dwarf Nova, HV Virginis

R. Ishioka·T. Kato·M. Uemura·J. Pietz·T. Vanmunster·T. Krajci·K. Torii·K. Tanabe·S. Kiyota·K. Kinugasa·G. Masi·K. Morikawa·L. M. Cook·P. Schmeer·H. Yamaoka
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Abstract

After 10 years of quiescence, HV Vir underwent a superoutburst in January 2002. We report time-series observations clearly revealing the period change of ordinary superhumps during the superoutburst. We derived a mean superhump period of 0.058260 d and a positive period derivative of $7 \times 10^{-5}$. These results are in good agreement with the value obtained from the 1992 superoutburst. We also detected early superhumps, which were not clearly recognized in the past outburst, and a possible rebrightening. Both of them are the common characteristics of WZ Sge-type stars.

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R. Ishioka, T. Kato, M. Uemura, J. Pietz, T. Vanmunster, T. Krajci, K. Torii, K. Tanabe, S. Kiyota, K. Kinugasa, G. Masi, K. Morikawa, L. M. Cook, P. Schmeer, H. Yamaoka. 2003-03-11. Period change of Superhumps in the WZ Sge-Type Dwarf Nova, HV Virginis. https://doi.org/10.1093/pasj%2F55.3.683

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