May 2023 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27787] ASASSN-14ai likely superoutburst
by Taichi Kato 29 May '23

29 May '23

ASASSN-14ai likely superoutburst Type from ATLAS + ASAS-SN DB. YYYYMMDD(UT) mag observer 20230519.7535 <18.862g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230520.0953 <17.616g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230521.0913 18.520g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.0784 17.839g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.0743 <17.502g (ASAS-SN Sky Patrol Photom. DB (… [View More]

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[vsnet-alert 27786] CH Her superhump period
by Taichi Kato 29 May '23

29 May '23

CH Her superhump period Tamas Tordai has reported second-night observations. The superhump period is established to be 0.07398(3) d. The amplitude is 0.15 mag.

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[vsnet-alert 27785] V1310 Cyg long outburst
by Taichi Kato 29 May '23

29 May '23

V1310 Cyg long outburst Nay be a superoutburst. YYYYMMDD(UT) mag observer 20230515.8079 <140c (Yutaka Maeda) 20230516.8015 <143c (Yutaka Maeda) 20230518.4347 21.052zg (ZTF Alert DC mag (Masci+ 2019)) 20230522.4089 16.213zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4590 16.656o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.4613 17.125o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.4843 16.868o (ATLAS Forced Photometry (Tonry+… [View More]

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[vsnet-alert 27784] ASASSN-18fp superoutburst
by Taichi Kato 29 May '23

29 May '23

ASASSN-18fp superoutburst YYYYMMDD(UT) mag observer 20230523.4905 <149c (Yutaka Maeda) 20230526.4925 138:c (Yutaka Maeda) 20230528.692 137 (Rod Stubbings)

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[vsnet-alert 27783] EK TrA outburst
by Taichi Kato 29 May '23

29 May '23

EK TrA outburst Faint superoutburst? Bright superoutburst in 2021 Mar. YYYYMMDD(UT) mag observer 20230519.2466 16.797o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.2497 17.334o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.2571 16.728o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.2645 14.813g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230519.2690 17.287o (ATLAS Forced Photometry (Tonry+2018; Shingles+… [View More]

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[vsnet-alert 27782] QU Aqr superoutburst
by Taichi Kato 28 May '23

28 May '23

QU Aqr superoutburst Known SU UMa star. Frequent superoutbursts and would deserve ER UMa-type classification (but superoutbursts are not very long). YYYYMMDD(UT) mag observer 20230519.3594 <17.108g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230520.4031 17.754zr (ZTF Alert DC mag (Masci+ 2019)) 20230520.4293 17.438zg (ZTF Alert DC mag (Masci+ 2019)) 20230522.4032 17.328zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4258 17.240zg (ZTF Alert DC mag (Masci+… [View More]

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[vsnet-alert 27781] CH Her: indeed SU UMa star
by Taichi Kato 26 May '23

26 May '23

CH Her: indeed SU UMa star Tamas Tordai has reported observations and detected superhumps (period about 0.075 d).

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[vsnet-alert 27780] 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 … [View More]

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[vsnet-alert 27779] 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 (… [View More]

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[vsnet-alert 27778] Gaia DR3 2893005857946801152 = ASASSN-23dr: superhump period
by Taichi Kato 25 May '23

25 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,… [View More]

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vsnet-alert May 2023