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

[vsnet-newvar 10112] ASASSN-16mi possible superoutburst
by Taichi Kato 25 May '23

25 May '23

ASASSN-16mi possible superoutburst Type from ZTF+ATLAS. Faint superoutburst? YYYYMMDD(UT) mag observer 20230509.2645 <17.076g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.2645 <17.407g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.4399 <17.166g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230514.5365 18.841o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5415 18.756o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5474 18.590o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.5714 16.432o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.5756 16.479o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230520.626 171C (Mitsutaka Hiraga) 20230522.5366 17.022o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5389 16.974o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5517 17.076o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5595 17.006o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.5531 17.023o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.5549 17.121o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.5580 17.017o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-newvar 10111] ASASSN-16lh outburst
by Taichi Kato 25 May '23

25 May '23

ASASSN-16lh outburst Long and short outbursts (long one presently). Amplitude too small for an SU UMa star? YYYYMMDD(UT) mag observer 20230507.4281 <16.779g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.1149 18.371o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.1195 18.635o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.1254 18.462o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.4227 <17.029g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230511.4188 16.740g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230512.4145 17.266g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230513.4139 16.394g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230514.4096 17.473g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230514.4096 17.493g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230515.4356 <16.397g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230516.4280 16.425g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230518.4082 16.861g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230519.3911 16.184o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.3929 17.303o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.4065 <16.721g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-newvar 10110] Gaia DR3 2893005857946801152 = ASASSN-23dr: superhump period
by Taichi Kato 24 May '23

24 May '23

Gaia DR3 2893005857946801152 = ASASSN-23dr: superhump period Berto Monard and Josch Hambsch have reported further observations. Thanks to Monard's high-cadence data, it has become apparent that ordinary superhumps started to appear on May 19. Due the the gap in the observation, I analyzed the data since May 22 and obtained a superhump period of 0.0580(1) d (amplitude 0.10 mag and the existence of superhumps is unambiguous). I could not detect early superhumps corresponding to this period, but as I already reported, this object appears to be a WZ Sge star.

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[vsnet-newvar 10109] ASASSN-22ak period
by Taichi Kato 24 May '23

24 May '23

ASASSN-22ak period Josch Hambsch has reported further observations. Thanks to the recent high-cadence data, the period has been established. The object brightened a bit on May 21 and the period since then has been 0.04292(2) d. Based on this alias selection, the period from the entire data is 0.043032(4) d. The profile still never appeared to be typical superhump-like. It has been fast rising and slower fading, as in early superhumps. The amplitude is 0.04 mag. The observations appear to confirm the classification of the object as being below the period minimum (EI Psc star).

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[vsnet-newvar 10108] Gaia DR3 4538714906329565952 = ZTF23aaladoy outburst
by Taichi Kato 24 May '23

24 May '23

Gaia DR3 4538714906329565952 = ZTF23aaladoy outburst Fading too rapidly for a superoutburst? YYYYMMDD(UT) mag observer 20230521.5006 15.905o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5024 15.928o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5063 15.932o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5122 15.924o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6066 16.246o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6098 16.270o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6130 16.303o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.7678 165V (Masayuki Moriyama) 20230523.7688 16.43C (Masayuki Moriyama)

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[vsnet-newvar 10107] ASASSN-13bs outburst
by Taichi Kato 24 May '23

24 May '23

ASASSN-13bs outburst Subtype unknown. Rather strange behavior in the past. YYYYMMDD(UT) mag observer 20230513.6041 <167C (Masayuki Moriyama) 20230514.599 175C (Mitsutaka Hiraga) 20230514.7266 <163C (Masayuki Moriyama) 20230514.7332 <149c (Yutaka Maeda) 20230515.6956 <145c (Yutaka Maeda) 20230519.7000 <162c (Yutaka Maeda) 20230520.576 175C (Mitsutaka Hiraga) 20230523.7797 144C (Masayuki Moriyama)

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[vsnet-newvar 10106] Re: ELAISN1MOS15-02 classification and period
by Taichi Kato 23 May '23

23 May '23

> SDSS J182643.55+613816.5 is the already known object > MASTER OT J182643.42+613816 (SU UMa). -> MASTER OT J182643.42+613816.2

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[vsnet-newvar 10105] ELAISN1MOS15-02 classification and period
by Taichi Kato 23 May '23

23 May '23

ELAISN1MOS15-02 classification and period https://arxiv.org/abs/2305.13371 "Cataclysmic Variables from Sloan Digital Sky Survey V -- the search for period bouncers continues" I could not confirm the claimed period for ELAISN1 MOS15-02 = SDSS J160809.54+542131.4. The fading rates of outbursts appear to me to small for the claimed period. This object is still a mystery one to me. SDSS J182643.55+613816.5 is the already known object MASTER OT J182643.42+613816 (SU UMa).

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[vsnet-newvar 10104] Gaia DR3 2893005857946801152 = ASASSN-23dr: most likely WZ Sge star
by Taichi Kato 23 May '23

23 May '23

Gaia DR3 2893005857946801152 = ASASSN-23dr: most likely WZ Sge star Josch Hambsch has reported further observations. There was an apparent superhump on May 22-23. As judged from the outburst light curve, the object probably entered the phase of ordinary superhumps (but there was a gap in the data). The initial rapid decay and the waiting time suggest a WZ Sge star.

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[vsnet-newvar 10103] ZTF23aajjayv still bright
by Taichi Kato 22 May '23

22 May '23

ZTF23aajjayv still bright The light curve suggests a superoutburst. YYYYMMDD(UT) mag observer 20230512.0661 <16.962g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.0673 <17.048g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.0686 16.874g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.2494 <15.386g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.2507 <15.026g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.2519 <14.876g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.4247 <17.254g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.4260 16.854g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230512.4273 16.891g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230513.3099 15.520zr (ZTF Alert DC mag (Masci+ 2019)) 20230513.3544 15.942zg (ZTF Alert DC mag (Masci+ 2019)) 20230513.3678 15.602g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230513.3691 15.647g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230513.3703 15.463g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230514.2359 14.480o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.2438 14.520o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.2479 14.494o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.3689 14.031g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230514.3701 14.026g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230514.3714 14.040g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230515.2651 14.217zg (ZTF Alert DC mag (Masci+ 2019)) 20230515.3262 14.161g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230515.3274 14.166g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230515.3287 14.186g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230515.9732 14.266g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230515.9745 14.256g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230515.9757 14.302g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230516.3228 14.295g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230516.3240 14.314g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230516.3253 14.279g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230517.2755 14.455zr (ZTF Alert DC mag (Masci+ 2019)) 20230517.3008 14.431zg (ZTF Alert DC mag (Masci+ 2019)) 20230519.2269 14.588zr (ZTF Alert DC mag (Masci+ 2019)) 20230519.3191 14.640zg (ZTF Alert DC mag (Masci+ 2019)) 20230520.6197 15.15C (Masayuki Moriyama) 20230521.5852 152C (Masayuki Moriyama)

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