[vsnet-alert 5543] RZ Leo rebrightening: observations urgently needed!

[Taichi Kato <tkato>]

RZ Leo rebrightening: observations urgently needed!

  The interval between the fading from the main superoutburst and
the rebrightening is only ~5 days, which is one of the shortest ever
observed in SU UMa-type dwarf novae.  Such "early rebrightening" has been
only observed on very few occasions such as the 1978 superoutburst of
WZ Sge, the 1995 superoutburst of AL Com and the 1997 superoutburst of
V2176 Cyg (USNO1425.09823278), all of which are notable examples of
WZ Sge-type dwarf novae.  The present pheonomenon observed in RZ Leo
may be somehow related to these rarely observed specimens.
Since the regrowth of superhumps during the rebrightening stage was reported
in AL Com (Nogami et al. 1997, ApJ 490, 840), we strongly urge observers
to monitor this object closely until the final quiescence is reached.

Regards,
VSNET Collaboration team

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