[vsnet-alert 21382] TCPJ18154219+3515598: faded but superhumping

[Keisuke Isogai]

TCPJ18154219+3515598: faded but superhumping

     Tamas Tordai, Geoff Stone, Pavol A. Dubosky, Alexandra Zubareva,
Nataly Katysheva, Roger Pickard and Itoh-san has reported further
observations.
     The object faded to around 17.0 mag and has not shown any
rebrightenings for the last 10 days. However, we has been able to
observe superhumps yet. The period of the late-stage superhumps
(= superhumps after the main superoutburst) was 0.06192 (1) d in
the initial phase but the current period is 0.06174 (1). By using O-C
diagram, we can see that the period of the late-stage superhumps
is gradually decreasing through the rebrightening phase. It may
imply the radius of the superhumping disk is shrinking.
     Further observations are encouraged. Snapshots by Ic and V
are also welcomed.