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The Nature of V359 Centauri Revealed: New Long-Period SU UMa-Type Dwarf Nova

T. Kato·R. Stubbings·P. Nelson·R. Santallo·R. Ishioka·M. Uemura·T. Sumi·Y. Muraki·P. Kilmartin·I. Bond·S. Noda·P. Yock·J. B. Hearnshaw·B. Monard·H. Yamaoka
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Abstract

We detected four outbursts of V359 Cen (possible nova discovered in 1939) between 1999 and 2002. Time-resolved CCD photometry during two outbursts (1999 and 2002) revealed that V359 Cen is actually a long-period SU UMa-type dwarf nova with a mean superhump period of 0.08092(1) d. We identified its supercycle length as 307-397 d. This secure identification of the superhump period precludes the previously supposed possibility that V359 Cen could be related to a WZ Sge-type system with a long persistence of late superhumps. The outburst characteristics of V359 Cen are, however, rather unusual in its low occurrence of normal outbursts.

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T. Kato, R. Stubbings, P. Nelson, R. Santallo, R. Ishioka, M. Uemura, T. Sumi, Y. Muraki, P. Kilmartin, I. Bond, S. Noda, P. Yock, J. B. Hearnshaw, B. Monard, H. Yamaoka. 2002-09-01. The Nature of V359 Centauri Revealed: New Long-Period SU UMa-Type Dwarf Nova. https://doi.org/10.1051/0004-6361%3A20021267

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