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

[vsnet-alert 27257] ATLAS17mmm likely superoutburst
by Taichi Kato 28 Dec '22

28 Dec '22

ATLAS17mmm likely superoutburst YYYYMMDD(UT) mag observer 20221221.2523 16.262zg (ZTF Alert DC mag (Masci+ 2019)) 20221221.2940 16.548zr (ZTF Alert DC mag (Masci+ 2019)) 20221226.6417 16.79C (Masayuki Moriyama)

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[vsnet-alert 27256] APA-V1 superoutburst?
by Taichi Kato 28 Dec '22

28 Dec '22

APA-V1 superoutburst? Suspected SU UMa star. Last likely superoutburst in 2020 July (ZTF data). YYYYMMDD(UT) mag observer 20221126.5886 <165C (Masayuki Moriyama) 20221205.5022 <168C (Masayuki Moriyama) 20221226.5015 16.17C (Masayuki Moriyama)

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[vsnet-alert 27255] CRTSJ091245.9-034916 outburst
by Taichi Kato 28 Dec '22

28 Dec '22

CRTSJ091245.9-034916 outburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221205.8328 <153c (Yutaka Maeda) 20221207.7902 <146c (Yutaka Maeda) 20221208.7800 <151c (Yutaka Maeda) 20221209.4243 17.785zg (ZTF Alert DC mag (Masci+ 2019)) 20221209.8217 <157c (Yutaka Maeda) 20221211.8374 <162C (Masayuki Moriyama) 20221215.4745 17.199zr (ZTF Alert DC mag (Masci+ 2019)) 20221223.4359 15.615zr (ZTF Alert DC mag (Masci+ 2019)) 20221223.4440 15.442zg (ZTF Alert DC mag (Masci+ 2019)) 20221225.7562 <146c (Yutaka Maeda) 20221225.8270 157C (Masayuki Moriyama)

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[vsnet-alert 27254] EF Eri: dips
by Taichi Kato 27 Dec '22

27 Dec '22

EF Eri: dips Observations by Kiyota-san and Itoh-san clearly shows short-duration dips such as at 2022 Dec. 25.618 (UT). These dips were not seen in every orbit but were present almost on every night. The durations were 2-3 min and were 0.8-mag deep. Ingress was slower and egress was sometimes sudden (within 30s).

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[vsnet-alert 27253] SDSSJ074640.62+173412.8 likely superoutburst
by Taichi Kato 27 Dec '22

27 Dec '22

SDSSJ074640.62+173412.8 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221207.7198 <153c (Yutaka Maeda) 20221208.7126 <147c (Yutaka Maeda) 20221209.7395 <148c (Yutaka Maeda) 20221215.6636 <155c (Yutaka Maeda) 20221220.6618 <152c (Yutaka Maeda) 20221225.6450 159:c (Yutaka Maeda)

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[vsnet-alert 27252] CRTSJ000024.7+332543 likely superoutburst
by Taichi Kato 27 Dec '22

27 Dec '22

CRTSJ000024.7+332543 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221220.5264 <161c (Yutaka Maeda) 20221224.5282 <159c (Yutaka Maeda) 20221225.4947 148cG (Yutaka Maeda) 20221225.4948 148cG (Yutaka Maeda)

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[vsnet-alert 27251] FT Cam bright outburst
by Taichi Kato 27 Dec '22

27 Dec '22

FT Cam bright outburst Object below the period gap. Not yet seen in superoutburst. YYYYMMDD(UT) mag observer 20221220.585 174C (Mitsutaka Hiraga) 20221220.5923 <153c (Yutaka Maeda) 20221220.6760 <146cG (Yutaka Maeda) 20221220.817 <152 (Gary Poyner) 20221221.2904 17.689zr (ZTF Alert DC mag (Masci+ 2019)) 20221223.891 <152 (Gary Poyner) 20221224.5943 157:c (Yutaka Maeda) 20221225.6951 137cG (Yutaka Maeda) 20221225.6952 137cG (Yutaka Maeda)

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[vsnet-alert 27250] CRTSJ010522.2+110253 likely superoutburst
by Taichi Kato 26 Dec '22

26 Dec '22

CRTSJ010522.2+110253 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221215.1508 20.125zr (ZTF Alert DC mag (Masci+ 2019)) 20221215.5654 <156c (Yutaka Maeda) 20221220.5633 <154c (Yutaka Maeda) 20221224.5651 144:cG (Yutaka Maeda) 20221224.5651 144:cG (Yutaka Maeda)

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[vsnet-alert 27249] ASASSN-15sm rapidly faded
by Taichi Kato 26 Dec '22

26 Dec '22

ASASSN-15sm rapidly faded YYYYMMDD(UT) mag observer 20221217.3919 15.280zr (ZTF Alert DC mag (Masci+ 2019)) 20221217.4054 15.041zg (ZTF Alert DC mag (Masci+ 2019)) 20221217.4059 15.063zg (ZTF Alert DC mag (Masci+ 2019)) 20221217.4342 15.260zr (ZTF Alert DC mag (Masci+ 2019)) 20221218.1662 15.36C (Masao Funada) 20221219.858 17.11C (Hiroshi Itoh) 20221220.519 <154 (Rod Stubbings) 20221220.765 17.87C (Hiroshi Itoh) 20221222.576 <161 (Rod Stubbings)

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[vsnet-alert 27248] Re: EF Eri profile
by Taichi Kato 26 Dec '22

26 Dec '22

Re: EF Eri profile Berto Monard has provided observations on 2006 Mar. 11 (one of high states in the 2000s). The orbital profile was similar to the current one (two maxima per period). It was not always the case in the past. See e.g.: https://ui.adsabs.harvard.edu/abs/1987A%26A...181L..15L/abstract

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