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

[vsnet-newvar 9756] ASASSN-20kl outburst
by Taichi Kato 06 Feb '23

06 Feb '23

ASASSN-20kl outburst Likely SU UMa star from ZTF data. YYYYMMDD(UT) mag observer 20230108.8889 <180C (Eddy Muyllaert) 20230203.1553 16.938zg (ZTF Alert DC mag (Masci+ 2019)) 20230203.1834 16.969zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9755] Re: UGWZ star CRTSJ174033.4+414756 outburst!
by Taichi Kato 05 Feb '23

05 Feb '23

Re: UGWZ star CRTSJ174033.4+414756 outburst! > I didn't realize the classification had changed. I will change my list > immediately. No special need. This object indeed underwent a WZ Sge-type superoutburst in 2013.

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[vsnet-newvar 9753] Re: UGWZ star CRTSJ174033.4+414756 outburst!
by Taichi Kato 05 Feb '23

05 Feb '23

Re: UGWZ star CRTSJ174033.4+414756 outburst! This is an EI Psc star. Another superoutburst in 2018. Not seen in outburst in ZTF data.

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[vsnet-newvar 9752] ASASSN-17qh likely superoutburst
by Taichi Kato 04 Feb '23

04 Feb '23

ASASSN-17qh likely superoutburst (Known SU UMa star) Funada-san detected an outburst at 13.4 on Feb. 3.

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[vsnet-newvar 9751] ASASSN-14mn: SU UMa star
by Taichi Kato 03 Feb '23

03 Feb '23

ASASSN-14mn: SU UMa star ZTF detected superhumps on 2019 Dec. 2 (period near 2 hr). This was a superoutburst confirmed by ATLAS data. Low-amplitude SU UMa star.

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[vsnet-newvar 9750] PNVJ06245297+0208207: fading from superoutburst plateau
by Taichi Kato 02 Feb '23

02 Feb '23

PNVJ06245297+0208207: fading from superoutburst plateau The object started fading rather rapidly on Jan. 31 (Itoh-san, Kiyota-san and Kyoto U. team). The object reached about 15.5 mag on Feb. 1 (Itoh-san). The superhump period during the superoutburst plateau (up to Jan. 30) was 0.033372(5) d. Observers were Kyoto U. team, Itoh-san, Kiyota-san, Crimean Astrophys. Obs. team and Josch Hambsch). This may be shorter than the orbital period (see Kato 2022 arXiv:2201.02945). The evolution of the outburst in this system is very similar to SDSS J090221.35+381941.9 and it would brighten again to a plateau phase. Have a look at the paper. https://ui.adsabs.harvard.edu/abs/2014PASJ...66L...7K/abstract Continued observations are requested.

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[vsnet-newvar 9749] CRTS J141712.0-180328 indeed most likely superoutburst
by Taichi Kato 01 Feb '23

01 Feb '23

CRTS J141712.0-180328 indeed most likely superoutburst Outburst still young enough. ATLAS data suggest supercycle of 1.5 yr. YYYYMMDD(UT) mag observer 20230120.7877 <147c (Yutaka Maeda) 20230121.7760 <144c (Yutaka Maeda) 20230129.3037 16.065o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230129.3068 16.024o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230129.3104 15.990o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230129.3198 15.893o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230129.3825 15.298o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.3467 14.487o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.3569 14.490o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.3722 14.531o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.3786 14.534o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230130.7778 142c (Yutaka Maeda) 20230130.7778 142c (Yutaka Maeda) 20230131.0745 14.376c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230131.0782 14.359c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230131.1000 14.356c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230131.1106 14.378c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9748] CRTS J141712.0-180328 relatively rare outburst
by Taichi Kato 01 Feb '23

01 Feb '23

CRTS J141712.0-180328 relatively rare outburst Likely superoutburst (Porb=0.0845 d) YYYYMMDD(UT) mag observer 20221231.8038 <141c (Yutaka Maeda) 20230103.7945 <142c (Yutaka Maeda) 20230110.8040 <142c (Yutaka Maeda) 20230120.7877 <147c (Yutaka Maeda) 20230121.7760 <144c (Yutaka Maeda) 20230130.7778 142c (Yutaka Maeda) 20230130.7778 142c (Yutaka Maeda)

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