[vsnet-chat 8625] Re: ASASSN-19xx = Gaia19ems: large-amplitude likely WZ Sge star

[Patrick Schmeer]

 ASASSN-19xx (UGWZ:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=1498862

Complete ASAS-SN Sky Patrol light curve and data:
https://asas-sn.osu.edu/sky-patrol/coordinate/dae09d94-a03a-4f74-a80e-142888ae53d0
 
ZTF light curve, data, and images (via Lasair):
https://lasair.roe.ac.uk/object/ZTF19abxgswj/
 
Gaia Photometric Science Alerts (light curve and data):
http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia19ems/

The 2019 (super)outburst started probably on September 4 or 5.
It was first detected on Sept. 5.3436 UT by ASAS-SN.
The main (super)outburst lasted until Sept. 28, when a rapid fading
was observed.
Eight rebrightenings were recorded by the Zwicky Transient Facility,
the ASAS-SN Sky Patrol and ATLAS: on 2019 October 3-4, 6-7, 10,
14, 16-17, 19-20, 23-24 and 28-29 (the first Gaia detection occurred
only during the second rebrightening).
 
Regards,
Patrick
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References:
All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol:
- Shappee et al., 2014ApJ...788...48S
- Kochanek et al., 2017PASP..129j4502K
Asteroid Terrestrial-impact Last Alert System (ATLAS):
- Tonry et al., 2018PASP..130f4505T
Lasair:
- Smith et al., 2019RNAAS...3...26S
Zwicky Transient Facility (ZTF):
- Masci et al., 2019PASP..131a8003M
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Am Dienstag, 6. Juli 2021, 07:02:48 MESZ hat Taichi Kato Folgendes geschrieben:

ASASSN-19xx = Gaia19ems: large-amplitude likely WZ Sge star

ZTF recorded the peak of 14.15g on 2019 Sep. 7.
The was a hint of multiple rebrightening in the ZTF data.  
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