- vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27234] ASASSN-19acs possible superoutburst
by Taichi Kato 23 Dec '22

23 Dec '22

ASASSN-19acs possible superoutburst YYYYMMDD(UT) mag observer 20221217.2230 17.615zg (ZTF Alert DC mag (Masci+ 2019)) 20221217.2819 17.481zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27233] ASASSN-16dg outburst
by Taichi Kato 23 Dec '22

23 Dec '22

ASASSN-16dg outburst Brightest outburst recorded by ZTF. YYYYMMDD(UT) mag observer 20221217.4346 15.264zr (ZTF Alert DC mag (Masci+ 2019)) 20221217.4401 15.076zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27231] ASAS-SN light curve of EF Eri
by Taichi Kato 22 Dec '22

22 Dec '22

ASAS-SN light curve of EF Eri First high state since the start of ASAS-SN. https://asas-sn.osu.edu/sky-patrol/coordinate/97767859-7bac-4e8d-bdda-ded38…

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[vsnet-alert 27230] QZ Vir likely normal outburst
by Taichi Kato 22 Dec '22

22 Dec '22

QZ Vir likely normal outburst YYYYMMDD(UT) mag observer 20221220.151 12.455C (Gary Poyner) 20221220.151 12.46C (Gary Poyner) 20221220.167 12.36C (Gary Poyner) 20221220.663 129 (Hiroyuki Maehara) 20221221.156 13.89C (Gary Poyner)

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[vsnet-alert 27229] AHTS-2020-006 likely superoutburst continues
by Taichi Kato 22 Dec '22

22 Dec '22

AHTS-2020-006 likely superoutburst continues YYYYMMDD(UT) mag observer 20221202.7889 161C (Masayuki Moriyama) 20221209.3614 16.335zr (ZTF Alert DC mag (Masci+ 2019)) 20221209.3785 16.296zg (ZTF Alert DC mag (Masci+ 2019)) 20221211.7987 <155C (Masayuki Moriyama) 20221215.3381 16.755zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27228] MGAB-V311 likely superoutburst
by Taichi Kato 22 Dec '22

22 Dec '22

MGAB-V311 likely superoutburst Type from ZTF data. Short supercycle. YYYYMMDD(UT) mag observer 20221215.2865 16.925zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27227] CRTSJ050716.2+125314 possible superoutburst
by Taichi Kato 22 Dec '22

22 Dec '22

CRTSJ050716.2+125314 possible superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221215.3215 16.784zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27226] GK Per outburst
by Taichi Kato 21 Dec '22

21 Dec '22

GK Per outburst Maeda-san reported 11.9C on Dec. 20. > PERGK 20221220.594919 119cG Mdy.VSOLJ outburst

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[vsnet-alert 27225] Re: ASASSN-22ak outburst (V3101 Cyg analog?)
by Taichi Kato 21 Dec '22

21 Dec '22

Re: ASASSN-22ak outburst (V3101 Cyg analog?) Berto Monard had reported single-night observation on 2022 Jan. 18, during the first superoutburst at mag slightly below 15. There was some hint of modulations with a period of 0.044 d, but this is not reliable due to the shortness of the run. Observations are encouraged while this object is still in outburst.

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[vsnet-alert 27224] ASASSN-22ak outburst (V3101 Cyg analog?)
by Taichi Kato 21 Dec '22

21 Dec '22

ASASSN-22ak outburst (V3101 Cyg analog?) > The outburst behavior is rather atypical. ASAS-SN light curve: https://asas-sn.osu.edu/sky-patrol/coordinate/69fa9f75-419d-482e-8a8b-0e031… All outbursts look like superoutbursts. The object looked like dormant before the exceptionally bright (13.1 mag) outburst in 202 Jan. Might be an object similar to V3101 Cyg (=TCP J21040470+4631129). ASASSN-22ak have much longer outbursts compared to "rebightening"-type superoutbursts in V3101 Cyg. An AM CVn star would also be a candidate considering the short recurrence time of superoutbursts. Detailed observations are encouraged anyway.

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