MM Hya : Rare superoutburst
As reported by R. Stubbings and A. Pearce on May 14, the SU UMa-type
dwarf nova MM Hya experienced a rare, bright outburst. The last
superoutburst of MM Hya was observed in 2000 April. Most of outbursts
of MM Hya are superoutburst, as in SW UMa and WZ Sge-type dwarf novae
(vsnet-campaign 898).
The object gradually faded, which indicates the outburst is a
superoutburst
(vsnet-campaign-dn 778).
B. Warner reported that they performed a time-series observation on
May 15, 16, and 17 with the 1.0-m telescope at the South African
Astronomical Observatory. The light curve on May 15 shows a double
humped profile and that on May 16 shows ~0.1 mag modulations with a
periodicity of 80min. On May 17, 0.3mag superhumps have appeared
(vsnet-campaign 904).
The superoutburst continued until around June 3 when R. Ishioka
found it has been fainter than 17.0mag
(vsnet-campaign-dn 851,
874).
Other related articles:
vsnet-campaign-dn 784,
787,
826