- vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 17423] V1040 Cen superoutburst
by Taichi Kato 19 Jul '23

19 Jul '23

V1040 Cen superoutburst YYYYMMDD(UT) mag observer 20230705.8381 14.531g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230706.0911 14.293g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230706.7127 14.512g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230711.428 123 (Rod Stubbings) 20230712.492 128 (Rod Stubbings) 20230717.437 130 (Rod Stubbings)

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[vsnet-campaign-dn 17422] NSV 35 likely superoutburst
by Taichi Kato 19 Jul '23

19 Jul '23

NSV 35 likely superoutburst Slowly rising superoutburst like the 2020 Oct.-Nov. one? YYYYMMDD(UT) mag observer 20230715.606 160 (Rod Stubbings) 20230716.731 142 (Rod Stubbings) 20230717.558 135 (Rod Stubbings)

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[vsnet-campaign-dn 17421] NSV 18024: still in outburst and slow fading
by Taichi Kato 19 Jul '23

19 Jul '23

NSV 18024: still in outburst and slow fading YYYYMMDD(UT) mag observer 20230711.357 120 (Rod Stubbings) 20230712.365 127 (Rod Stubbings) 20230717.362 134 (Rod Stubbings)

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[vsnet-campaign-dn 17420] V632 Cyg superoutburst
by Taichi Kato 19 Jul '23

19 Jul '23

V632 Cyg superoutburst YYYYMMDD(UT) mag observer 20230714.9347 <143 (Jose Ripero) 20230715.9799 <143 (Eddy Muyllaert) 20230716.7609 132cG (Yutaka Maeda) 20230716.7965 140C (Masayuki Moriyama) 20230716.9250 <143 (Jose Ripero) 20230717.033 133 (Gary Poyner) 20230717.5403 13.87C (Masayuki Moriyama) 20230717.9556 135 (Eddy Muyllaert) 20230718.010 13.90C (Gary Poyner) This time again, Jose Ripero apparently didn't know the outburst and continued copying earlier observations.

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[vsnet-campaign-dn 17419] V2276 Sgr: entered plateau
by Taichi Kato 19 Jul '23

19 Jul '23

V2276 Sgr: entered plateau According to Josch Hambsch's observations. Entered a plateau (or standstill) on July 16 before the ending of the superoutburst. The favored period is 0.01963 d (amplitude 0.05 mag). All the behavior strengthens the AM CVn-type classification. The next superoutburst is expected in October and high-cadence time-resolved photometry during the earliest part of the superoutburst will detect superhumps with larger amplitudes.

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[vsnet-campaign-dn 17418] ASASSN-23ff: new SU UMa-type dwarf nova
by Taichi Kato 18 Jul '23

18 Jul '23

ASASSN-23ff: new SU UMa-type dwarf nova Josch Hambsch has reported observations. Superhumps with a period of 0.05667(2) d are clearly present (amplitude 0.18 mag).

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[vsnet-campaign-dn 17417] V776 And: superoutburst and superhumps
by Taichi Kato 18 Jul '23

18 Jul '23

V776 And: superoutburst and superhumps Stephen Brincat has reported observations. The object shows superhumps. The period is 0.06611(2) d.

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[vsnet-campaign-dn 17416] V2276 Sgr: oscillation-type rebrightening
by Taichi Kato 18 Jul '23

18 Jul '23

V2276 Sgr: oscillation-type rebrightening Josch Hambsch reported further observations. The object is now in an oscillation state, commonly seen in AM CVn-type superoutburst. I obtained a likely period of 0.02019 d, which also appears suitable for an AM CVn star, but requires confirmation since observations are still lacking.

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[vsnet-campaign-dn 17415] V2276 Sgr rising
by Taichi Kato 13 Jul '23

13 Jul '23

V2276 Sgr rising Thanks to Josch Hambsch, the rising part (18.2 to 17.2) on July 12 was detected. This object is expected to be an AM CVn star and a higher time resolution is desirable.

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[vsnet-campaign-dn 17414] V776 And outburst
by Taichi Kato 13 Jul '23

13 Jul '23

V776 And outburst (Combined magnitudes for ASAS-SN DB). SU UMa star, but the classification from superhumps is not secure. YYYYMMDD(UT) mag observer 20230603.5502 15.861g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230605.5318 16.077g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230606.5288 16.023g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230607.5927 15.982g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230615.5019 15.857g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230615.8117 <145c (Yutaka Maeda) 20230616.740 182C (Mitsutaka Hiraga) 20230617.5367 15.816g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230625.4503 15.906g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230628.4458 15.804g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230630.4735 15.921g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230704.4233 15.778g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230705.4233 15.845g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230708.5948 14.033g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230713.1010 135cG (Masao Funada)

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