- vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 17328] V1006 Cyg: standstill-like state?
by Taichi Kato 02 Jun '23

02 Jun '23

V1006 Cyg: standstill-like state? cf. [vsnet-alert 27728] V1006 Cyg unusual state with frequent, short outbursts The object stopped outbursting and may have entered a standstill-like state in May. YYYYMMDD(UT) mag observer 20230511.7231 148cG (Yutaka Maeda) 20230512.4044 15.256zg (ZTF Alert DC mag (Masci+ 2019)) 20230512.4535 15.413zr (ZTF Alert DC mag (Masci+ 2019)) 20230512.5821 15.621o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.5839 15.573o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.5885 15.657o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.6067 15.633o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.6123 17.280o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.6142 17.818o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230513.4079 16.235zg (ZTF Alert DC mag (Masci+ 2019)) 20230513.4660 16.180zr (ZTF Alert DC mag (Masci+ 2019)) 20230514.3641 16.475zg (ZTF Alert DC mag (Masci+ 2019)) 20230514.4300 16.392zr (ZTF Alert DC mag (Masci+ 2019)) 20230514.5433 16.523o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5455 16.499o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5469 16.631o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5501 16.588o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5583 16.635o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5587 16.732o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.7588 <146c (Yutaka Maeda) 20230515.4218 16.424zr (ZTF Alert DC mag (Masci+ 2019)) 20230515.4433 16.591zg (ZTF Alert DC mag (Masci+ 2019)) 20230515.7188 <150c (Yutaka Maeda) 20230516.7121 <153c (Yutaka Maeda) 20230517.3622 16.685zg (ZTF Alert DC mag (Masci+ 2019)) 20230517.4078 16.490zr (ZTF Alert DC mag (Masci+ 2019)) 20230518.4495 16.498zr (ZTF Alert DC mag (Masci+ 2019)) 20230518.9757 <142 (Eddy Muyllaert) 20230519.4342 16.438zg (ZTF Alert DC mag (Masci+ 2019)) 20230519.4556 16.350zr (ZTF Alert DC mag (Masci+ 2019)) 20230519.7238 <165c (Yutaka Maeda) 20230520.4103 16.317zr (ZTF Alert DC mag (Masci+ 2019)) 20230520.4222 16.529zg (ZTF Alert DC mag (Masci+ 2019)) 20230521.3914 16.630zg (ZTF Alert DC mag (Masci+ 2019)) 20230521.4452 16.387zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4103 16.117zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4329 16.249zg (ZTF Alert DC mag (Masci+ 2019)) 20230522.5622 15.964o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5640 15.966o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5703 15.984o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5803 16.004o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.4109 15.797zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.4500 15.781zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.7312 <156c (Yutaka Maeda) 20230524.5397 16.361o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5690 16.558o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5700 16.627o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5719 16.227o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5723 16.468o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5755 16.455o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5777 16.429o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.4272 16.517zg (ZTF Alert DC mag (Masci+ 2019)) 20230525.4306 16.451zg (ZTF Alert DC mag (Masci+ 2019)) 20230525.4569 16.368zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4584 16.462zr (ZTF Alert DC mag (Masci+ 2019)) 20230526.4982 16.209o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5009 16.226o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5216 16.167o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5271 16.363o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5220 16.256o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5247 16.328o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5394 16.541o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5495 16.326o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5202 16.347o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5231 16.409o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5302 16.325o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5119 16.327o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5146 16.477o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5358 16.478o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5539 16.437o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17327] Re: Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn)
by Taichi Kato 02 Jun '23

02 Jun '23

Re: Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn) Recent data: YYYYMMDD(UT) mag observer 20230524.5141 19.376o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5442 19.253o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5502 19.170o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.3606 19.310zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.3891 19.188zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4054 19.499zg (ZTF Alert DC mag (Masci+ 2019)) 20230526.4524 18.826o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.4779 19.099o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.4817 18.659o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5090 18.846o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5122 14.480o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5419 14.478o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5739 14.455o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.6010 14.504o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5266 14.752o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5589 14.574o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230531.522 144C (Mitsutaka Hiraga) 20230531.621 144C (Mitsutaka Hiraga) 20230601.2496 14.405g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230601.4872 14.975o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.4908 14.960o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5198 14.908o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) Time-resolved photometric campaigns were conducted in 2014 and 2016.

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[vsnet-campaign-dn 17326] Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn)
by Taichi Kato 02 Jun '23

02 Jun '23

Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn) Time-resolved photometry is very much encouraged. Last one in 2016. YYYYMMDD(UT) mag observer 20230519.4613 19.506zr (ZTF Alert DC mag (Masci+ 2019)) 20230520.555 <175C (Mitsutaka Hiraga) 20230521.4107 19.487zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.3612 19.660zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.4322 19.479zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.564 <172C (Mitsutaka Hiraga) 20230525.3606 19.310zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.3891 19.188zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4054 19.499zg (ZTF Alert DC mag (Masci+ 2019)) 20230531.522 144C (Mitsutaka Hiraga) 20230531.621 144C (Mitsutaka Hiraga) 20230601.2496 14.405g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-campaign-dn 17325] PS16bqk most likely superoutburst (AM CVn?)
by Taichi Kato 02 Jun '23

02 Jun '23

PS16bqk most likely superoutburst (AM CVn?) As suggested by VSX, the AM CVn type is highly likely. Time-resolved photometry is encouraged. https://www.aavso.org/vsx/index.php?view=detail.top&oid=2387514 YYYYMMDD(UT) mag observer 20230521.3680 15.557zg (ZTF Alert DC mag (Masci+ 2019)) 20230521.4196 15.880zr (ZTF Alert DC mag (Masci+ 2019)) 20230521.5006 15.910o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5024 15.939o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5063 15.931o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5122 15.929o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.4022 16.172zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.4450 15.880zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.6066 16.243o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6098 16.279o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6130 16.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6161 16.219o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.3853 16.439zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4212 16.161zg (ZTF Alert DC mag (Masci+ 2019)) 20230525.5762 16.517o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5771 16.548o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5803 16.639o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5835 16.637o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5934 16.558o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5971 16.603o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5975 16.540o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.6069 16.364o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.6187 16.521o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.4255 19.080zg (ZTF Alert DC mag (Masci+ 2019)) 20230527.4791 19.212o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4187 16.774o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4214 16.816o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4264 16.831o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4541 16.815o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.4052 16.408zg (ZTF Alert DC mag (Masci+ 2019)) 20230531.4750 16.827o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17324] ASASSN-16ee superoutburst?
by Taichi Kato 01 Jun '23

01 Jun '23

ASASSN-16ee superoutburst? Past one in 2021 Oct.-Nov. YYYYMMDD(UT) mag observer 20230510.7270 16.093c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7299 16.107c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7359 16.113c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7457 16.122c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0008 17.519o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0041 17.398o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0126 17.592o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0230 17.511o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1023 16.221o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1053 16.186o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1118 16.132o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1242 16.119o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1246 15.974o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1270 16.050o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1326 16.236o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1427 16.261o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7431 16.256c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7469 16.285c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7536 16.330c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7634 16.199c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0139 16.679o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0237 16.631o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0279 16.695o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0377 16.747o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7311 16.755c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7345 16.786c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7397 16.793c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7498 16.764c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230520.9890 16.839o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230520.9922 16.925o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230520.9986 16.904o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.0105 17.026o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17323] ASASSN-16gr likely superoutburst
by Taichi Kato 01 Jun '23

01 Jun '23

ASASSN-16gr likely superoutburst Supercycle about 300 d (ATLAS+ZTF+ASAS-SN). YYYYMMDD(UT) mag observer 20230522.3994 18.152zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4211 18.308zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.0629 15.114g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230523.7858 <144c (Yutaka Maeda) 20230523.9831 15.368g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.3995 15.426zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.0069 15.296c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0378 15.560c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0434 15.593c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0467 15.610c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.4584 15.678zr (ZTF Alert DC mag (Masci+ 2019)) 20230526.9619 15.223g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.9531 15.373g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.0439 15.839c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.0472 15.806c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.0499 15.906c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.9557 15.502g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230530.2748 15.547g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-campaign-dn 17322] ZTF23aajjayv: emerging superhumps?
by Taichi Kato 01 Jun '23

01 Jun '23

ZTF23aajjayv: emerging superhumps? According to the most recent observations by Tonny Vanmunster, superhumps may have emerged since May 28. I have not been able to determine the period.

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[vsnet-campaign-dn 17321] ASASSN-18fp superhumps
by Taichi Kato 01 Jun '23

01 Jun '23

ASASSN-18fp superhumps Peter Starr has reported observations on two nights. Superhumps were present and the period was 0.06448(2) d. Not a WZ Sge star as judged from the early appearance of superhumps.

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[vsnet-campaign-dn 17320] ASASSN-22ak superhumps (grown)
by Taichi Kato 30 May '23

30 May '23

ASASSN-22ak superhumps (grown) Josch Hambsch has reported new observations. Superhumps have grown and are now directly visible in the light curve (associated with general brightening particularly since May 23). The current period is 0.042920(7) d (same as in vsnet-alert 27777) with a profile typical of ordinary superhumps (amplitude 0.09 mag).

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[vsnet-campaign-dn 17319] Re: ASASSN-15hn: possible superoutburst
by Taichi Kato 30 May '23

30 May '23

Re: ASASSN-15hn: possible superoutburst > First superoutburst since 2015? May be a WZ Sge star. ATLAS also detected this outburst. YYYYMMDD(UT) mag observer 20230524.0507 <18.013g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.0469 <17.674g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.0391 14.043g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.7100 14.320o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.7133 14.333o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.7289 14.309o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.0422 14.106g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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