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

[vsnet-alert 27825] MisV1449 rare outburst

by Taichi Kato

MisV1449 rare outburst Outburst in 2017 May and 2020 Sep. The 2017 one may have been a superoutburst (rebrightening in ATLAS?). The 2020 one was relatively short. Maybe a candidate for an SU UMa star above the period gap similar to SDSSJ094002.56+274942.0. YYYYMMDD(UT) mag observer 20230507.5783 17.109g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.5783 17.161g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.5134 <17.310g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230606.5216 14.939o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230606.5225 15.022o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230606.5239 14.928o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230606.5305 14.937o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230606.5473 14.916o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

9 hours, 34 minutes

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[vsnet-alert 27824] SDSSJ162830.89+240259.1 superhump period

by Taichi Kato

SDSSJ162830.89+240259.1 superhump period Josch Hambsch and Itoh-san have reported observations. The superhump period is 0.0701(1) d. Amplitude 0.18 mag.

13 hours, 40 minutes

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[vsnet-alert 27823] ASASSN-22ak brightened again

by Taichi Kato

ASASSN-22ak brightened again Josch Hambsch has reported new observations. The object started to brighten again on June 3. This time, superhumps have not been enhanced.

14 hours, 41 minutes

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[vsnet-alert 27822] GaiaDR32893005857946801152 = ASASSN-23dr, oscillation-type rebrightening

by Taichi Kato

GaiaDR32893005857946801152 = ASASSN-23dr, oscillation-type rebrightening Josch Hambsch and Maehara-san have reported additional observations. The object faded from superoutburst on May 30-31. After a short dip, the object now shows oscillation-type rebrightenings (like WZ Sge).

14 hours, 45 minutes

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[vsnet-alert 27821] HS Vir indeed superoutburst

by Taichi Kato

HS Vir indeed superoutburst Josch Hambsch has recorded superhumps.

14 hours, 48 minutes

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[vsnet-alert 27820] Carter_SDSSJ173047.59+554518.5 superhumps

by Taichi Kato

Carter_SDSSJ173047.59+554518.5 superhumps Itoh-san reported observations on June 5 and clear superhumps were visible. The outburst was possibly composed of early superhump-type superoutburst, dip and ordinary superoutburst (type E-like in hydrogen-rich WZ Sge stars).

1 day, 12 hours

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[vsnet-alert 27819] SDSSJ162830.89+240259.1: superhumps

by Taichi Kato

SDSSJ162830.89+240259.1: superhumps Itoh-san recorded superhumps on June 5. According to http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/13491 G. Masi detected superhumps in 2011. The data are not in our record. If Masi still have the data, please send them to vsnet-campaign-report(a)ooruri.kusastro.kyoto-u.ac.jp

1 day, 12 hours

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[vsnet-alert 27818] Re: [VSS] RCB Star IO Nor is undergoing a decline & [VSS] RCB star V653 Sco is undergoing a decline

by Peter Williams

Hi Andrew, Great to see someone keeping a regular watch on these southern RCB stars! CC to the vsnet-rcb and vsnet-alert groups for info, but I cannot remember if they accept the light curve attachments :) Tks and regards Peter Williams Heathcote NSW From: variablestarssouth(a)googlegroups.com [mailto:variablestarssouth@googlegroups.com] On Behalf Of Andrew Pearce Sent: Monday, 5 June 2023 11:15 AM To: Variable Stars South <VariableStarsSouth(a)googlegroups.com> Subject: [VSS] RCB Star IO Nor is undergoing a decline Hi All Another little observed RCB star, IO Nor, is undergoing a decline as per the attached light curve. Regards Andrew = = = = = = = = = = = = = = = = = = = = From: variablestarssouth(a)googlegroups.com [mailto:variablestarssouth@googlegroups.com] On Behalf Of Andrew Pearce Sent: Monday, 5 June 2023 10:45 AM To: Variable Stars South <VariableStarsSouth(a)googlegroups.com> Subject: [VSS] RCB star V653 Sco is undergoing a decline Hi All The little observed RCB star, V653 Sco, is undergoing a decline as can be seen from the attached light curve. Years ago, professional astronomers used to be very interested in RCB fades. That doesn't seem to be the case anymore at least that I'm aware of. Regards Andrew = = = = = = = = = = = = = = = = = = = = -- You received this message because you are subscribed to the Google Groups "Variable Stars South" group. To unsubscribe from this group and stop receiving emails from it, send an email to VariableStarsSouth+unsubscribe(a)googlegroups.com <mailto:VariableStarsSouth+unsubscribe@googlegroups.com> . To view this discussion on the web, visit https://groups.google.com/d/msgid/VariableStarsSouth/e7b14d23-70f2-4b8d-96f… <https://groups.google.com/d/msgid/VariableStarsSouth/e7b14d23-70f2-4b8d-96f…> .

2 days, 4 hours

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[vsnet-alert 27817] Carter_SDSSJ173047.59+554518.5 already after dip

by Taichi Kato

Carter_SDSSJ173047.59+554518.5 already after dip (AM CVn star) Tamas Tordai and Tonny Vanmunster have reported observations. The was an apparent dip on June 3 and the object was observed to brighten on June 3-4 (with superhumps).

2 days, 11 hours

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[vsnet-alert 27816] ZTF23aajjayv superhump period

by Taichi Kato

ZTF23aajjayv superhump period Josch Hambsch and Tonny Vanmunster have reported further observations. The object now show superhumps. An analysis of the data since May 31 yielded a period of 0.06786(6) d, amplitude 0.11 mag. Likely a period bouncer.

2 days, 11 hours

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2023

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2021