March 2023 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 9945] ASASSN-19lb: IW And star
by Taichi Kato 31 Mar '23

31 Mar '23

ASASSN-19lb: IW And star From ATLAS data. IW And state in 2023. Currently in standstill? following oscillation state.

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[vsnet-newvar 9944] ASASSN-19bl: most likely AM CVn
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-19bl: most likely AM CVn ATLAS+ZTF. Multiple rebrightenings on fading tail. Superoutbursts in 2019 Jan.-Feb. and 2022 Nov.

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[vsnet-newvar 9943] ASASSN-19ba superoutburst?
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-19ba superoutburst? (May be already over) YYYYMMDD(UT) mag observer 20230310.2361 15.182zr (ZTF Alert DC mag (Masci+ 2019)) 20230316.2419 16.180o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2457 16.242o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2515 16.283o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2617 16.180o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9942] Re: SDSSJ100515.39+191108.0 superoutburst
by Taichi Kato 30 Mar '23

30 Mar '23

Re: SDSSJ100515.39+191108.0 superoutburst 20230326.1163 18.395o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1503 18.520o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1535 18.436o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1786 18.501o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3452 18.488o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3502 18.510o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3540 18.241o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3645 18.473o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.6222 <149c (Yutaka Maeda) 20230327.3462 13.264o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3492 13.251o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3552 13.246o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3907 13.170o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.6384 125cG (Yutaka Maeda) 20230328.6544 132cG (Yutaka Maeda) 20230328.6544 132cG (Yutaka Maeda) 20230328.9399 13.697c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.9431 13.680c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.9579 13.693c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9941] ASASSN-13bs: not (yet) SU UMa star?
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-13bs: not (yet) SU UMa star? On two occasions (2018 Aug. and 2021 Apr.) when T. Vanmunster reported superhumps, the corresponding outbursts have been confirmed to be short (ATLAS/ZTF). They were unlikely true superoutbursts. I changed UGSU to UG. No long outbursts have been recorded in these data.

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[vsnet-newvar 9940] MASTER OT J183007.03+764313.3 outburst
by Taichi Kato 30 Mar '23

30 Mar '23

MASTER OT J183007.03+764313.3 outburst Super? YYYYMMDD(UT) mag observer 20230320.5981 15.944o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.6134 15.978o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5633 16.798o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5656 16.757o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5683 16.746o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9939] ASASSN-15ku superhump period
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-15ku superhump period Based on observations by Tamas Tordai, the superhump period is 0.06645(2) d still allowing aliases due to a long gap in the observation.

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[vsnet-newvar 9938] ASASSN-23bn superhump period
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-23bn superhump period Based on observations by Greg Bolt, Peter Starr, Berto Monard and Josch Hambsch, the superhump period is established to be 0.059681(7) d.

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[vsnet-newvar 9937] Wils_SDSSJ073208.11+413008.7 indeed superoutburst
by Taichi Kato 30 Mar '23

30 Mar '23

Wils_SDSSJ073208.11+413008.7 indeed superoutburst YYYYMMDD(UT) mag observer 20230324.3284 15.983o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230324.3373 16.011o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2787 16.603o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2872 16.663o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2904 16.652o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3036 16.682o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.5506 <156c (Yutaka Maeda) 20230327.2820 15.989o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2853 15.908o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3030 15.732o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3151 15.814o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.5747 <148c (Yutaka Maeda) 20230328.2783 15.836o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2820 15.912o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2883 15.873o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2989 15.937o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5888 155c (Yutaka Maeda)

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[vsnet-newvar 9936] Wils_SDSSJ073208.11+413008.7 possible superoutburst
by Taichi Kato 29 Mar '23

29 Mar '23

Wils_SDSSJ073208.11+413008.7 possible superoutburst YYYYMMDD(UT) mag observer 20230326.5506 <156c (Yutaka Maeda) 20230327.5747 <148c (Yutaka Maeda) 20230328.5888 155c (Yutaka Maeda)

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