[vsnet-alert 21730] ASASSN-17qf: small mass ratio

Keisuke Isogai isogai at kusastro.kyoto-u.ac.jp
Fri Dec 22 07:37:50 JST 2017

ASASSN-17qf: small mass ratio

     Itoh-san and Kyoto U. team have continued to observe the object.
We can see the stage A-B transition on Dec. 19. The periods of stage A
and B are 0.06761 (3) d and 0.06708 (2) d. The updated early superhump
period is 0.06683 (1) d. By using these periods, we obtained the very
small mass ratio = 0.0295 (5). The object must be a peiod bouncer.
     Further observations are encouraged.

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