[vsnet-outburst 26842] ZTF21aanehlz: superhump period and type

[Taichi Kato]

ZTF21aanehlz: superhump period and type

   Tonny Vanmunster, Itoh-san and Josch Hambsch have
reported observations.  The superhump period since
Mar. 10 (following a dip in Mar. 8-9) is 0.06258(3) d.
(Compare vsnet-alert 25534).

   Please note that a similar dip was seen in EG Cnc
during the 2018 superoutburst.

See
http://adsabs.net/abs/2021PASJ...73....1K

   So it looks more likely to me an EG Cnc-like object
(i.e. WZ Sge-type object).  The mean amplitude of
superhumps is small (0.09 mag), suggesting that
the object has a low mass ratio.  Probably due to
the low mass ratio, the disk failed to maintain
the hot state and a dip occurred before superhumps
appeared.  The superhump period is also similar
to that of EG Cnc and further observations will be
interesting.