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

[vsnet-alert 27244] ATLAS17mmm possible superoutburst
by Taichi Kato 24 Dec '22

24 Dec '22

ATLAS17mmm possible superoutburst YYYYMMDD(UT) mag observer 20221221.2523 16.262zg (ZTF Alert DC mag (Masci+ 2019)) 20221221.2940 16.548zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27243] ASASSN-22ak period?
by Taichi Kato 24 Dec '22

24 Dec '22

ASASSN-22ak period? Josch Hambsch has reported observations on three nights. Although the amplitude was an order of 0.1 mag with limited statistics, a period of either 0.0412 d or double one (allowing aliases) is suggested. Considering the unusual outburst properties, further observations are strongly needed.

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[vsnet-alert 27242] EF Eri profile
by Taichi Kato 24 Dec '22

24 Dec '22

EF Eri profile Kyoto U. team, Kiyota-san, Itoh-san, Peter Starr and Josch Hambsch have reported observation. The object shows very clear two peaks (full amplitude 0.7 mag) in one orbital period. The period 0.056269(3) d is in very good agreement with the published one. There is also a dip (somewhat variable), which may be an eclipse of/by the accretion column.

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[vsnet-alert 27241] ATLAS17myk outburst
by Taichi Kato 23 Dec '22

23 Dec '22

ATLAS17myk outburst YYYYMMDD(UT) mag observer 20220828.4538 21.848zg (Zwicky Transient Facility (Masci et al., 2019)) 20220828.4758 21.660zr (Zwicky Transient Facility (Masci et al., 2019)) 20220907.4434 21.200zr (Zwicky Transient Facility (Masci et al., 2019)) 20221221.2137 16.809zg (ZTF Alert DC mag (Masci+ 2019)) 20221221.2142 16.783zg (ZTF Alert DC mag (Masci+ 2019)) 20221221.2411 16.949zr (ZTF Alert DC mag (Masci+ 2019)) 20221221.2845 16.928zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27240] AY Lac outburst
by Taichi Kato 23 Dec '22

23 Dec '22

AY Lac outburst (WZ Sge-type outburst in 2020 Oct.) YYYYMMDD(UT) mag observer 20221211.4558 <159c (Yutaka Maeda) 20221223.797 163C (Jeremy Shears)

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[vsnet-alert 27237] QZ Vir brightening (start of superoutburst?)
by Taichi Kato 23 Dec '22

23 Dec '22

QZ Vir brightening (start of superoutburst?) 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) 20221222.196 15.05C (Gary Poyner) 20221222.653 140 (Rod Stubbings)

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[vsnet-alert 27232] ASASSN-15sm possible superoutburst
by Taichi Kato 22 Dec '22

22 Dec '22

ASASSN-15sm possible superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221217.3919 15.280zr (ZTF Alert DC mag (Masci+ 2019)) 20221217.4054 15.041zg (ZTF Alert DC mag (Masci+ 2019)) 20221217.4059 15.063zg (ZTF Alert DC mag (Masci+ 2019)) 20221217.4342 15.260zr (ZTF Alert DC mag (Masci+ 2019)) 20221218.1662 15.36C (Masao Funada)

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[vsnet-alert 27236] CRTSJ085024.2-235811 (AM CVn:) still bright
by Taichi Kato 22 Dec '22

22 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-alert 27235] CRTSJ053541.8-113717 possible superoutburst
by Taichi Kato 22 Dec '22

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

22 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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