Discovery of a New Deeply Eclipsing SU UMa-Type Dwarf Nova, IY UMa (= TmzV 85)

/ Authors

M. Uemura, T. Kato, K. Matsumoto, K. Takamizawa, P. Schmeer, L. Jensen, T. Vanmunster, R. Novák, B. Martin, J. Pietz

and 8 more authors

D. Buczynski, T. Kinnunen, M. Moilanen, A. Oksanen, L. Cook, Tsutomu Watanabe, H. Maehara, H. Itoh

/ Abstract

We discovered a new deeply eclipsing SUUMa-type dwarf nova, IYUMa, 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.

Journal: Publications of the Astronomical Society of Japan

DOI: 10.1093/pasj/52.2.L9