[vsnet-outburst 25455] ZTF18abihypg (= MGAB-V270): long superoutburst (June 21 - July 16) with a dip

[Patrick Schmeer pasc1312-aavso@yahoo.de via vsnet-outburst]

ZTF18abihypg = MGAB-V270  (UGSU:, AM CVn star?)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=844453

ZTF light curve:
https://lasair.roe.ac.uk/object/ZTF18abihypg/

Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S
and Kochanek et al. 2017PASP..129j4502K) data and light curve:
https://asas-sn.osu.edu/light_curves/cb9d74cb-8386-4770-9f44-74f0eef8c19a

June 21-26: outburst
June 27: rapidly fading
July 1: rebrightening to an even longer outburst
July 17: rapidly fading

This does not look like a double superoutburst,
but like a long superoutburst (of an AM CVn star)
with a dip.
 
Regards,
Patrick