[vsnet-alert 25547] ZTF21aanehlz: superhump period and type
Taichi Kato
tkato at kusastro.kyoto-u.ac.jp
Tue Mar 16 12:02:21 JST 2021
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.
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