[vsnet-alert 22703] ASASSN-18yi: fading rate changed?

Kojiguchi Naoto kojiguchi at kusastro.kyoto-u.ac.jp
Fri Nov 9 06:27:52 JST 2018


ASASSN-18yi: fading rate changed?

Itoh-san and Berto Monard reported the observations.
This object had shown an unusual slow fading rate of
0.02 mag/d for 16 days from detection.

According to the ASAS-SN data, the fading rate seems
to have changed from 0.02 to 0.2 mag/d on 9 Nov.
The latter value is consistent with a usual fading
rate of superoutbursts.
However, nobody reported time-resolved observations
for about four days, and we cannot confirm whether it
is true. We also don't know the present states of
superhumps and eclipses.
According to the Gaia and the CRTS data, this object
in quiescence might not show eclipses.

As reported in [vsnet-alert 22667], this object shows
a very unique state. Therefore, further observations
are strongly encouraged.




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