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

[vsnet-alert 26650] HW Boo superoutburst
by Taichi Kato 11 Mar '22

11 Mar '22

HW Boo superoutburst YYYYMMDD(UT) mag observer 20220307.7036 <146c (Yutaka Maeda) 20220308.065 <153 (Gary Poyner) 20220308.1431 <141 (Eddy Muyllaert) 20220308.7026 136cG (Yutaka Maeda) 20220308.9701 <141 (Eddy Muyllaert) 20220309.6951 140:cG (Yutaka Maeda) 20220309.6951 140:cG (Yutaka Maeda)

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[vsnet-alert 26645] ASASSN-22cw: most likely new WZ Sge-type dwarf nova
by Taichi Kato 09 Mar '22

09 Mar '22

ASASSN-22cw: most likely new WZ Sge-type dwarf nova Berto Monard has reported observations. Two cycles of variations were recorded. The period was 0.0528(7) d and a full amplitude of 0.08 mag. The profile is doubly humped with the second one brighter and this suggests that the variation early superhumps. Note that the period may be shorter than 0.05332 d in GW Lib. Further observations are needed to confirm and then update the period.

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[vsnet-alert 26644] OU Vir: precursor + main superoutburst
by Taichi Kato 09 Mar '22

09 Mar '22

OU Vir: precursor + main superoutburst Tamas Tordai and Itoh-san have reported further observations. The object already showed a large amplitude superhump on early Mar. 8. It has been confirmed to be in precursor outburst on Mar. 5-6.

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[vsnet-alert 26643] VZ Sex: long, bright outburst (IP)
by Taichi Kato 08 Mar '22

08 Mar '22

VZ Sex: long, bright outburst (IP) Slowly rising. Inside-out? YYYYMMDD(UT) mag observer 20220222.508 <128 (Tsuneo Horie) 20220222.9569 <143 (Eddy Muyllaert) 20220223.5789 158:c (Yutaka Maeda) 20220224.503 <128 (Tsuneo Horie) 20220224.6593 <140c (Yutaka Maeda) 20220224.9472 <143 (Eddy Muyllaert) 20220225.498 <128 (Tsuneo Horie) 20220225.6617 <151c (Yutaka Maeda) 20220225.8979 <143 (Eddy Muyllaert) 20220226.2325 16.100zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220226.499 <128 (Tsuneo Horie) 20220226.6802 155c (Yutaka Maeda) 20220226.8924 <143 (Eddy Muyllaert) 20220227.503 <128 (Tsuneo Horie) 20220227.6687 <157c (Yutaka Maeda) 20220227.8986 <143 (Eddy Muyllaert) 20220228.3234 15.710zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220302.3260 15.555zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220303.503 <128 (Tsuneo Horie) 20220303.6629 141cG (Yutaka Maeda) 20220303.6630 141cG (Yutaka Maeda) 20220303.7014 144C (Masayuki Moriyama) 20220305.496 <128 (Tsuneo Horie) 20220305.6694 136cG (Yutaka Maeda) 20220305.7006 138C (Masayuki Moriyama) 20220305.8840 138 (Eddy Muyllaert) 20220306.487 <128 (Tsuneo Horie) 20220306.6647 13.36C (Masayuki Moriyama) 20220306.6711 130c (Yutaka Maeda) 20220306.6712 130c (Yutaka Maeda) 20220306.8882 129 (Eddy Muyllaert) 20220307.6786 134cG (Yutaka Maeda) 20220307.6786 134cG (Yutaka Maeda) 20220307.953 13.45C (Gary Poyner) 20220307.9549 13.56C (Masao Funada)

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[vsnet-alert 26642] YZ LMi outburst (AM CVn+E)
by Taichi Kato 08 Mar '22

08 Mar '22

YZ LMi outburst (AM CVn+E) YYYYMMDD(UT) mag observer 20220122.251 <17.90C (Gary Poyner) 20220130.7470 <178C (Masayuki Moriyama) 20220131.2299 <179C (Masao Funada) 20220213.0903 <179C (Masao Funada) 20220307.9520 16.60C (Masao Funada)

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[vsnet-alert 26641] CSS J062450.1+503114 superoutburst
by Taichi Kato 08 Mar '22

08 Mar '22

CSS J062450.1+503114 superoutburst YYYYMMDD(UT) mag observer 20220302.2466 18.674zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220303.5583 <159c (Yutaka Maeda) 20220304.5625 <159c (Yutaka Maeda) 20220305.5644 145cG (Yutaka Maeda) 20220306.5677 141cG (Yutaka Maeda) 20220307.5718 144cG (Yutaka Maeda) 20220307.5718 144cG (Yutaka Maeda)

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[vsnet-alert 26640] OU Vir: superhumps
by Taichi Kato 08 Mar '22

08 Mar '22

OU Vir: superhumps Observations by Kyoto U. team on Mar. 8 detected clear superhumps (and of course eclipses). Superhumps were not apparent on Mar. 6 (Itoh-san). It looks like that these observations and Tordai's data on Mar. 5 corresponded to the precursor. We have also received data from Tordai on Mar. 7, which will be analyzed in due time.

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[vsnet-alert 26639] Re: GZ Cnc possible superoutburst
by Taichi Kato 07 Mar '22

07 Mar '22

Re: GZ Cnc possible superoutburst Was a normal outburst. YYYYMMDD(UT) mag observer 20220225.6586 <150c (Yutaka Maeda) 20220225.7558 <162C (Masayuki Moriyama) 20220226.6771 135cG (Yutaka Maeda) 20220226.6772 135cG (Yutaka Maeda) 20220227.6656 131cG (Yutaka Maeda) 20220227.6656 131cG (Yutaka Maeda) 20220227.7532 135C (Masayuki Moriyama) 20220227.8778 132 (Eddy Muyllaert) 20220228.3297 13.704zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220301.167 13.74C (Gary Poyner) 20220301.1677 13.91C (Masao Funada) 20220302.2546 14.699zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220303.6599 <145c (Yutaka Maeda) 20220303.6807 160:C (Masayuki Moriyama) 20220304.7204 162:C (Masayuki Moriyama) 20220305.6663 <155c (Yutaka Maeda) 20220305.7246 <153C (Masayuki Moriyama)

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[vsnet-alert 26638] OU Vir: no superhumps?
by Taichi Kato 07 Mar '22

07 Mar '22

OU Vir: no superhumps? Tamas Tordai has reported observations. No apparent superhumps were present on Mar. 6. Normal outburst or before the appearance of superhumps?

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[vsnet-alert 26632] MASTER OT J111759.87+765131.6 superoutburst
by Taichi Kato 07 Mar '22

07 Mar '22

MASTER OT J111759.87+765131.6 superoutburst (Known SU UMa star) YYYYMMDD(UT) mag observer 20220220.6509 <150c (Yutaka Maeda) 20220224.6137 <149c (Yutaka Maeda) 20220225.6146 <157c (Yutaka Maeda) 20220226.6296 <164c (Yutaka Maeda) 20220227.6210 <163c (Yutaka Maeda) 20220303.6164 143c (Yutaka Maeda)

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vsnet-alert March 2022