The 2003 Superoutburst of an SU UMa-type Dwarf Nova, GO Comae Berenices

Details The 2003 Superoutburst of an SU UMa-type Dwarf Nova, GO Comae Berenices The 2003 Superoutburst of an SU UMa-type Dwarf Nova, GO Comae Berenices

2004-12-17

arxiv.org/abs/astro-ph/0412450v1

Astronomy and Astrophysics

Astrophysics

11 pages, 7 figures, to appear in PASJ

Scientific paper

We photometrically observed the 2003 June superoutburst of GO Gom. The mean superhump period was 0.063059(13) d. The resultant data revealed that (1) the obtained light curve contained a precursor, (2) a plateau stage of the object lasted 8 days, which is remarkably shorter than that of ordinary SU UMa-type dwarf novae, and (3) the amplitude of the superoutburst was less than 5 mag, which is unpredictably small when taking into account the fact that the supercycle of GO Com is about 2800 days. In order to explain these anomalies, a mass elimination process from the accretion disk, such as evaporation, may play an important role.

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