[vsnet-alert 22282] ASASSN-18ey: slow decline in brightness

Yasuyuki WAKAMATSU wakamatsu at kusastro.kyoto-u.ac.jp
Thu Jul 5 16:03:01 JST 2018


ASASSN-18ey: slow decline in brightness

Tamas Tordai, Tonny Vanmunster, Josch Hambsch, Michael Richmond,
Domenico Licchelli, Geoff Stone, Ian Miller, Stephen Brincat and
Itoh-san reported further observations.

This object started a slow decline in brightness on June 27.
The magnitude is now about 13.3 mag, and the superhump
amplitude is about 0.7 mag. The superhump period is
0.6869(1) d and seems to be further shortened. Perhaps this
object might show stage B superhumps if this behavior is similar
to that in SU UMa-type dwarf novae.

Further observations are strongly encouraged to detect
following changes of the superhump period and superhump
amplitudes.



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