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[vsnet-campaign-dn 16370] V803 Cen: oscillation phase
by Taichi Kato 16 Apr '22

16 Apr '22

V803 Cen: oscillation phase According to observations by Josch Hambsch, V803 Cen is now oscillating phase with amplitudes of 0.8 mag and periods of 0.8 d.

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[vsnet-campaign-dn 16369] ASASSN-14je superoutburst
by Taichi Kato 15 Apr '22

15 Apr '22

ASASSN-14je superoutburst YYYYMMDD(UT) mag observer 20220328.0734 <162C (Masao Funada) 20220407.456 142 (Rod Stubbings) 20220409.494 143 (Rod Stubbings) Also http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bnr/

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[vsnet-campaign-dn 16368] Re: EI UMa: bright outbursts recently
by Taichi Kato 14 Apr '22

14 Apr '22

Re: EI UMa: bright outbursts recently > ASAS-SN data: > https://asas-sn.osu.edu/sky-patrol/coordinate/cfa667b6-c1a4-4af8-8288-cddff… It appears that the outburst mode has changed since 2019 Sep. ASAS-SN show more outbursts with smaller amplitudes and I found a mean period of 56.4 d (which had not been detected by Reimer et al. (2008) ApJ 678, 376). The M_V of these outbursts were +3.6 at peak and look compatible with dwarf nova outbursts. Brighter multiple peaks with shorter durations reaching g=12.5 have M_V = +2.2 and they are not considered to be dwarf nova outbursts (support for IP outbursts).

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[vsnet-campaign-dn 16367] EI UMa: bright outbursts recently
by Taichi Kato 14 Apr '22

14 Apr '22

EI UMa: bright outbursts recently ASAS-SN data: https://asas-sn.osu.edu/sky-patrol/coordinate/cfa667b6-c1a4-4af8-8288-cddff… The 2022 Mar. event had multiple peaks and this looks like IP outbursts. The 2020 Oct. event had a longer duration and this could have been a dwarf nova outburst.

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[vsnet-campaign-dn 16366] ASASSN-13bm: likely superoutburst
by Taichi Kato 13 Apr '22

13 Apr '22

ASASSN-13bm: likely superoutburst YYYYMMDD(UT) mag observer 20220401.8045 <158c (Yutaka Maeda) 20220402.7996 <156c (Yutaka Maeda) 20220404.8103 <161c (Yutaka Maeda) 20220406.8031 <158c (Yutaka Maeda) 20220409.7556 143cG (Yutaka Maeda)

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[vsnet-campaign-dn 16365] ASASSN-21ie outburst
by Taichi Kato 12 Apr '22

12 Apr '22

ASASSN-21ie outburst Suspected SU UMa star from the ZTF data. YYYYMMDD(UT) mag observer 20220410.4815 16.716zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16364] ASASSN-15nz outburst
by Taichi Kato 12 Apr '22

12 Apr '22

ASASSN-15nz outburst Suspected SU UMa star from the ZTF data. YYYYMMDD(UT) mag observer 20220401.7016 <148c (Yutaka Maeda) 20220403.7041 <153c (Yutaka Maeda) 20220404.7070 <163c (Yutaka Maeda) 20220407.7025 <154c (Yutaka Maeda) 20220408.7041 <152c (Yutaka Maeda) 20220410.3330 15.838zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16363] RX Cha superoutburst
by Taichi Kato 12 Apr '22

12 Apr '22

RX Cha superoutburst YYYYMMDD(UT) mag observer 20220327.2154 <160C (Masao Funada) 20220407.476 146 (Rod Stubbings) 20220409.510 150 (Rod Stubbings) 20220411.471 150 (Rod Stubbings) Also: http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bml/

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[vsnet-campaign-dn 16362] ASASSN-22fk: likely SU UMa-type dwarf nova
by 反保雄介 10 Apr '22

10 Apr '22

ASASSN-22fk: likely an SU UMa-type dwarf nova ASASSN-22fk (=ZTF22aafasmd <https://lasair.roe.ac.uk/object/ZTF22aafasmd/>) was found on 8th April as a CV candidate by ASAS-SN team. On 9th April, we, Kyoto Univ. obs. detected probable superhumps with a period of 0.0596(5) d and an amplitude of 0.2 mags. Thus, ASASSN-22fk is likely an SU UMa-type dwarf nova. Further observations are encouraged to determine its superhump period and evolution. Best, Yusuke -- ---------------------------------------------- Kyoto University, Graduate School of Department of Astronomy, PhD student Yusuke TAMPO MAIL: tampo(a)kusastro.kyoto-u.ac.jp ----------------------------------------------

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[vsnet-campaign-dn 16361] GZ Cnc superoutburst
by Taichi Kato 10 Apr '22

10 Apr '22

GZ Cnc superoutburst YYYYMMDD(UT) mag observer 20220330.544 164 (Rod Stubbings) 20220331.433 165 (Rod Stubbings) 20220402.6245 <154c (Yutaka Maeda) 20220402.6727 <167C (Masayuki Moriyama) 20220403.6288 <158c (Yutaka Maeda) 20220404.608 131 (Hiroyuki Maehara) 20220404.6318 129cG (Yutaka Maeda) 20220404.6474 133C (Masayuki Moriyama) 20220406.6286 126cG (Yutaka Maeda) 20220406.6287 126cG (Yutaka Maeda) 20220407.5913 127cG (Yutaka Maeda) 20220408.5931 127cG (Yutaka Maeda) 20220409.483 128 (Rod Stubbings)

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