[vsnet-alert 17081] Re: MASTER OT J192809.82+551616.5 fading rapidly after outburst by ~7m

[Taichi Kato]

Re: MASTER OT J192809.82+551616.5 fading rapidly after outburst by ~7m

> The rapid fading is in
> contradiction with the large amplitude which seems to be too much for
> a normal outburst or UGSS type dwarf nova. Experts opinion is needed!

   A fading rate of 0.3-0.4 mag/d is not strongly
in contradiction with a WZ Sge-type outburst.
The initial phase of WZ Sge-type dwarf novae
reflects viscous decay, which is faster than
the exponential decay (see subsection 5.4 of Pdot5
paper).  Indeed V592 Her (1998) initially faded
very quickly.