MM Sco superhumps
Josch Hambsch has reported observations. The object
started showing superhumps on Mar. 30. The amplitudes
of superhumps (if present) were still very small
on Mar. 29.
Re: ASASSN-19yt outburst (since Mar. 16)
> The current outburst began on 2022 March 16 according to ATLAS
> forced photometry data. A rapid fading started on March 26.
> The outburst duration is shorter than that of a standard UGSU
> superoutburst.
The light curve is that of an SS Cyg star and I had
classified as such.
ASASSN-19yt (UG)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=1498802
Recent ASAS-SN Sky Patrol light curve and data:
https://asas-sn.osu.edu/sky-patrol/coordinate/b12b1094-0c9b-4216-9d5f-8f2d6…
ZTF light curve, data, and images (via Lasair):
https://lasair.roe.ac.uk/object/ZTF17aaagnwn/
The current outburst began on 2022 March 16 according to ATLAS
forced photometry data. A rapid fading started on March 26.
The outburst duration is shorter than that of a standard UGSU
superoutburst.
A previous outburst was observed from 2019 October 5 to 13.
Follow-up observations are encouraged.
Clear skies,
Patrick
-------
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
-------
T. Kato wrote (vsnet-alert 23615, 2019 October 9):
Re: ASASSN-19yt
There is an XMM source. The present amplitude would suggest a dwarf nova.
061801.4 +222231 (2000.0) 2XMM_J061801.4+222231 err=0.8 5.523e-14 0.87 0.29 -0.22 -0.34
