Discovery of a New Deeply Eclipsing SU UMa-Type Dwarf Nova, IY UMa (= TmzV85)
M. Uemura, T. Kato, K. Matsumoto, K. Takamizawa, P. Schmeer, L. T. Jensen, T. Vanmunster, R. Novak, B. Martin, J. Pietz, D. Buczynski, T. Kinnunen, M. Moilanen, A. Oksanen, Lewis M. Cook, T. Watanabe, H. Maehara, H. Itoh
Abstract
We discovered a new deeply eclipsing SU UMa-type dwarf nova, IY UMa, which experienced a superoutburst in 2000 January. Our monitoring revealed two distinct outbursts, which suggest a superoutburst interval of ~800 d, or its half, and an outburst amplitude of 5.4 mag. From time-series photometry during the superoutburst, we determined a superhump and orbital period of 0.07588 d and 0.0739132 d, respectively.
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