[vsnet-alert 24016] Gaia15afz outburst/superoutburst?

Andrew Simon andrew_simon at univ.kiev.ua
Thu Feb 27 18:55:36 JST 2020


Dear group!

In our data from 26 02 2020 from Adiyaman Observatory (W. Ogloza, M.
Zejmo, E. Sonbas) we detected Gaia15afz in outburst. According to the
ASASSN data ( Shappee et al. (2014) and Kochanek et al. (2017)) on 26 02
2020 object had g mag 15.508 and last nondetection was on 24 02 2020
(https://asas-sn.osu.edu/light_curves/ab002097-4134-4098-85fc-b4c60930d91f).

Last superoutburst was detected 93 days ago by our team on 25 11 2019.
During last outburst we found superhumps with period of about 0.065(2)d
and amplitude of 0.2 mag (http://www.astronomerstelegram.org/?read=13314).

Also, according to The ASAS-SN Catalog of Variable Stars: II
(https://asas-sn.osu.edu/variables/fd5a6db5-8bae-5007-aef1-85005c562ffb)
object has estimated period of 107 days. So we suppose, that now it can be
a superoutburst.

Time-resolved photometry are encouraged.

Clear skies,
Andrew.



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