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

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B. Martin J. Pietz D. Buczynski T. Kinnunen M. Moilanen A. Oksanen Lewis M. Cook T. Watanabe H. Maehara H. Itoh

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classification 🌌 astro-ph

keywords superoutburstdeeplydwarfeclipsingnovauma-typeamplitudedetermined

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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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Discovery of a New Deeply Eclipsing SU UMa-Type Dwarf Nova, IY UMa (= TmzV85)

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