Survey of period variations of superhumps in SU UMa-type dwarf novae. V. The fifth year (2012โ2013)
Survey of period variations of superhumps in SU UMa-type dwarf novae. V. The fifth year (2012โ2013)
Continuing the project described by Kato et al. (2009a, arXiv:0905.1757), we collected times of superhump maxima for SU UMa-type dwarf novae mainly observed during the 2012-2013 season. We found three objects (V444 Peg, CSS J203937 and MASTER J212624) having strongly positive period derivatives despite the long orbital period (Porb). By โฆ