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

[vsnet-newvar 9658] CRTSJ085024.2-235811 (AM CVn:) still bright
by Taichi Kato 23 Dec '22

23 Dec '22

CRTSJ085024.2-235811 (AM CVn:) still bright YYYYMMDD(UT) mag observer 20221201.5035 16.958zr (ZTF Alert DC mag (Masci+ 2019)) 20221210.4403 18.064zr (ZTF Alert DC mag (Masci+ 2019)) 20221210.4607 17.904zg (ZTF Alert DC mag (Masci+ 2019)) 20221217.4346 16.853zr (ZTF Alert DC mag (Masci+ 2019)) 20221217.4401 16.633zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9657] CRTSJ053541.8-113717 possible superoutburst
by Taichi Kato 23 Dec '22

23 Dec '22

CRTSJ053541.8-113717 possible superoutburst YYYYMMDD(UT) mag observer 20221202.6253 <158c (Yutaka Maeda) 20221205.6474 <153c (Yutaka Maeda) 20221206.6187 <149c (Yutaka Maeda) 20221209.6363 <153c (Yutaka Maeda) 20221217.2954 16.181zr (ZTF Alert DC mag (Masci+ 2019)) 20221217.3159 16.083zg (ZTF Alert DC mag (Masci+ 2019)) 20221220.4869 <153c (Yutaka Maeda)

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[vsnet-newvar 9656] 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-newvar 9655] 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-newvar 9653] 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-newvar 9652] 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-newvar 9651] 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-newvar 9650] 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-newvar 9649] 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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[vsnet-newvar 9648] ASASSN-22ak outburst
by Taichi Kato 21 Dec '22

21 Dec '22

ASASSN-22ak outburst The outburst behavior is rather atypical. YYYYMMDD(UT) mag observer 20221218.546 162 (Rod Stubbings) 20221219.540 161 (Rod Stubbings) 20221220.574 163 (Rod Stubbings)

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