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

[vsnet-alert 27876] V803 Cen another superoutburst
by Taichi Kato 01 Jul '23

01 Jul '23

V803 Cen another superoutburst Josch Hambsch reported further observations. Another superoutburst started on June 25-26 and superhumps are clearly present.

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[vsnet-alert 27875] V725 Aql rebrightening on June 29
by Taichi Kato 01 Jul '23

01 Jul '23

V725 Aql rebrightening on June 29 Josch Hambsch reported further observations. There was a rebrightening at 15.7 mag on June 29 (it was already fading).

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[vsnet-alert 27874] FL Psc: rapid fading on June 26
by Taichi Kato 01 Jul '23

01 Jul '23

FL Psc: rapid fading on June 26 Josch Hambsch reported further observations. The object started fading on June 25 and now at mag 15.0. We probably observed the growth of stage C superhumps and the behavior is not particularly different from the 2004 superoutburst. A rebrightening is expected.

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[vsnet-alert 27873] ASASSN-23es: SU UMa-type dwarf nova
by Taichi Kato 26 Jun '23

26 Jun '23

ASASSN-23es: SU UMa-type dwarf nova Josch Hambsch has reported observations. Due to the relatively large scatter (probably due to unfavorable weather) and sparse sampling, it was difficult to detect superhumps. An analysis using the entire data yielded a period of 0.07211(3) d (amplitude 0.11 mag).

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[vsnet-alert 27872] Re: FL Psc started showing superhumps
by Taichi Kato 22 Jun '23

22 Jun '23

Re: FL Psc started showing superhumps > According to observations by Josch Hambsch, this object > started to show ordinary superhumps on June 21 at 12.0 mag, > later than in 2004. This may be the start of stage C superhumps rather than appearance of superhumps. The current outburst had a peak magnitude of 9.7 on June 1. YYYYMMDD(UT) mag observer 20230530.6037 17.467g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230530.6037 <16.982g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230530.6050 <16.977g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230530.6062 <16.854g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230531.5925 10.117g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230531.5925 10.147g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230531.5938 10.147g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230531.5950 10.131g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230601.4129 10.042g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230601.4130 9.673g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230601.4142 9.368g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230601.4155 9.376g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230603.6127 9.942g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230603.6140 9.921g (ASAS-SN survey (Shappee+2014; Kochanek+2017))

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[vsnet-alert 27871] BraTS-SON-T2-046 = TCPJ17294472-4236232: superhump period
by Taichi Kato 22 Jun '23

22 Jun '23

BraTS-SON-T2-046 = TCPJ17294472-4236232: superhump period Period 0.06166(1) d. Amplitude 0.10 mag. Observers: Josch Hambsch and Peter Starr If this is indeed a WZ Sge star, multiple rebrightenings are expected for this superhump period.

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[vsnet-alert 27870] AS Pav superhump period
by Taichi Kato 22 Jun '23

22 Jun '23

AS Pav superhump period Period 0.0900(3) d. Amplitude 0.14 mag. Observer: Josch Hambsch. The object already enter the rapid fading phase.

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[vsnet-alert 27869] TCP J17321088+0807243 superhump period
by Taichi Kato 22 Jun '23

22 Jun '23

TCP J17321088+0807243 superhump period Period 0.06103(4) d. Amplitude 0.19 mag. Observers: Tonny Vanmunster, Itoh-san, Kiyota-san and Josch Hambsch.

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[vsnet-alert 27868] FL Psc started showing superhumps
by Taichi Kato 22 Jun '23

22 Jun '23

FL Psc started showing superhumps According to observations by Josch Hambsch, this object started to show ordinary superhumps on June 21 at 12.0 mag, later than in 2004.

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[vsnet-alert 27867] V544 Her faded, but
by Taichi Kato 21 Jun '23

21 Jun '23

V544 Her faded, but According to observations by Itoh-san on June 20, V544 Her faded to 16th mag. It is still unknown whether this means fading to quiescence or a dip which will be followed by rebrightening. Please continue your observations. I haven't been able to detect a periodic signal from observations up to June 18.

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