June 2023 - vsnet-rcb - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-rcb 882] ES Aql fading
by Taichi Kato 20 Jun '23

20 Jun '23

ES Aql fading YYYYMMDD(UT) mag observer 20230307.8541 117:cG (Yutaka Maeda) 20230421.7890 119cG (Yutaka Maeda) 20230430.6832 120cG (Yutaka Maeda) 20230515.6804 121cG (Yutaka Maeda) 20230523.6556 123cG (Yutaka Maeda) 20230619.5552 13.25V (Minoru Sato)

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[vsnet-rcb 881] Re: [VSS] RCB Star IO Nor is undergoing a decline & [VSS] RCB star V653 Sco is undergoing a decline
by Peter Williams 05 Jun '23

05 Jun '23

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…> .

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[vsnet-rcb 880] R CrB fading?
by Taichi Kato 02 Jun '23

02 Jun '23

R CrB fading? Several observers have pointed out that R CrB may be getting fainter. YYYYMMDD(UT) mag observer 20230518.9063 60 (Eddy Muyllaert) 20230519.744 61 (Susumu Takahashi) 20230520.542 60 (Susumu Takahashi) 20230520.567 61 (Yoshiyasu Sato) 20230521.008 60 (Gary Poyner) 20230521.985 59 (Gary Poyner) 20230523.001 59 (Gary Poyner) 20230523.544 60 (Hiroyuki Maehara) 20230523.565 64 (Kenji Nakai) 20230523.606 61 (Yoshiyasu Sato) 20230524.019 60 (Gary Poyner) 20230524.485 63 (Tsuneo Horie) 20230524.508 61 (Masashi Nakatani) 20230524.585 61 (Yoshiyasu Sato) 20230524.944 60 (Gary Poyner) 20230525.510 60 (Hiroyuki Maehara) 20230525.581 61 (Yoshiyasu Sato) 20230526.990 60 (Gary Poyner) 20230527.442 65 (Tsuneo Horie) 20230527.978 62 (Gary Poyner) 20230528.965 64 (Gary Poyner) 20230529.8785 62 (Jose Ripero) 20230529.951 64 (Gary Poyner) 20230530.492 61 (Yoshiyasu Sato) 20230531.535 62 (Yoshiyasu Sato) 20230531.597 64 (Masashi Nakatani) 20230531.867 66 (Klaus Wenzel)

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