October 2022 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 26970] NSV10748 likely superoutburst
by Taichi Kato 08 Oct '22

08 Oct '22

NSV10748 likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221001.1637 16.243zg (ZTF Alert DC mag (Masci+ 2019)) 20221005.2350 16.628zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 26969] N080829A possible superoutburst
by Taichi Kato 08 Oct '22

08 Oct '22

N080829A possible superoutburst YYYYMMDD(UT) mag observer 20221003.5749 <155c (Yutaka Maeda) 20221005.2237 16.157zr (ZTF Alert DC mag (Masci+ 2019)) 20221005.2537 15.867zg (ZTF Alert DC mag (Masci+ 2019)) 20221005.5678 <156c (Yutaka Maeda)

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[vsnet-alert 26968] SDSS J001153.08-064739.1: most likely SU UMa star
by Taichi Kato 08 Oct '22

08 Oct '22

SDSS J001153.08-064739.1: most likely SU UMa star Josch Hambsch has recored a 0.2 mag hump. Although the baseline is one orbital cycle, the profile and amplitude suggest a superhump. This object is very interesting since it is in the period gap and has an evolved secondary. The reported mass ratio is above 0.25 and the detection of superhumps is great astrophysical importance. Continued observations are encouraged.

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[vsnet-alert 26967] ASASSN-21gw superoutburst
by Taichi Kato 07 Oct '22

07 Oct '22

ASASSN-21gw superoutburst Superhumps were detected in 2021 May. YYYYMMDD(UT) mag observer 20220927.5026 15.264zr (ZTF Alert DC mag (Masci+ 2019)) 20221004.4416 15.540zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 26966] ASASSN-20bb likely superoutburst
by Taichi Kato 07 Oct '22

07 Oct '22

ASASSN-20bb likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221004.4536 16.524zg (ZTF Alert DC mag (Masci+ 2019)) 20221004.4541 16.532zg (ZTF Alert DC mag (Masci+ 2019)) 20221004.4819 16.798zr (ZTF Alert DC mag (Masci+ 2019)) 20221004.4824 16.799zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 26965] PU Per superoutburst
by Taichi Kato 07 Oct '22

07 Oct '22

PU Per superoutburst YYYYMMDD(UT) mag observer 20221001.5848 <155c (Yutaka Maeda) 20221003.001 <156 (Gary Poyner) 20221003.6365 149cG (Yutaka Maeda) 20221003.958 152 (Gary Poyner)

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[vsnet-alert 26964] WX Cet started to show superhumps
by Taichi Kato 06 Oct '22

06 Oct '22

WX Cet started to show superhumps According to the most recent observations by Josch Hambsch, WX Cet started to show superhumps on Oct. 4 or 5. Itoh-san obtained long time-series data starting from the rising phase, but superhumps were not apparent up to Oct. 3.

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[vsnet-alert 26963] 1RXS J185310.0+594509 superoutburst
by Taichi Kato 06 Oct '22

06 Oct '22

1RXS J185310.0+594509 superoutburst YYYYMMDD(UT) mag observer 20220923.2220 18.685zg (ZTF Alert DC mag (Masci+ 2019)) 20220925.1568 18.605zg (ZTF Alert DC mag (Masci+ 2019)) 20220927.1984 18.451zg (ZTF Alert DC mag (Masci+ 2019)) 20220927.6203 <156C (Masayuki Moriyama) 20220929.1309 18.315zr (ZTF Alert DC mag (Masci+ 2019)) 20220929.1967 18.459zg (ZTF Alert DC mag (Masci+ 2019)) 20220929.494 172C (Mitsutaka Hiraga) 20220929.5232 <158c (Yutaka Maeda) 20220930.437 147C (Mitsutaka Hiraga) 20220930.6429 147C (Masayuki Moriyama) 20221001.6098 148C (Masayuki Moriyama) 20221003.485 155C (Mitsutaka Hiraga) 20221003.6404 152C (Masayuki Moriyama) 20221005.5012 153C (Masayuki Moriyama)

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[vsnet-alert 26962] SDSS J001153.08-064739.1 rare bright outburst
by Taichi Kato 06 Oct '22

06 Oct '22

SDSS J001153.08-064739.1 rare bright outburst Moriyama-san has pointed out that this object is undergoing a rare bright outburst. The orbital period is in the period gap and a superoutburst can be expected. https://ui.adsabs.harvard.edu/abs/2014ApJ...790...28R/abstract Using ZTF data, I obtained an orbital period of 0.1002809(1) d. The phased light curve show clear EW-like modulations with an amplitude of 0.25 mag. YYYYMMDD(UT) mag observer 20220703.4593 17.813zg (Zwicky Transient Facility (Masci et al., 2019)) 20220706.4376 17.765zg (Zwicky Transient Facility (Masci et al., 2019)) 20220917.3159 17.539zg (ZTF Alert DC mag (Masci+ 2019)) 20220929.2732 14.095zg (ZTF Alert DC mag (Masci+ 2019)) 20221003.6523 13.10C (Masayuki Moriyama) 20221005.5858 13.51C (Masayuki Moriyama)

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[vsnet-alert 26961] ASASSN-22lx: new SU UMa-type dwarf nova
by Taichi Kato 06 Oct '22

06 Oct '22

ASASSN-22lx: new SU UMa-type dwarf nova Josch Hambsch and Berto Monard have reported observations. This object started to show superhumps on Oct. 4. The current period is 0.0564(5) d.

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vsnet-alert October 2022