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

[vsnet-alert 27032] V538 Mon: recent ASAS-SN light curve
by Taichi Kato 10 Nov '22

10 Nov '22

V538 Mon: recent ASAS-SN light curve Some oscillations were present in the rising phase. https://asas-sn.osu.edu/sky-patrol/coordinate/a03271af-1395-49ed-a02c-fff23…

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[vsnet-alert 27031] TCP J22032951+3544161: new SU UMa-type dwarf nova
by Taichi Kato 10 Nov '22

10 Nov '22

TCP J22032951+3544161: new SU UMa-type dwarf nova According to the most recent observations by the Kyoto U. team (Nov. 6-8), this object started to show superhumps with a period of 0.06428(8) d (amplitude 0.10 mag). A shorter one-day alias is still possible. Early superhumps were below the detection limit as from the available observations. This object may be classified as an WZ Sge star later based on rebrightening(s). Itoh-san and Kiyota-san contributed in the earlier stage of the outburst.

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[vsnet-alert 27030] ASASSN-22nj: new SU UMa-type dwarf nova
by Taichi Kato 10 Nov '22

10 Nov '22

ASASSN-22nj: new SU UMa-type dwarf nova According to the most recent observations by the Kyoto U. team (Nov. 8), this object started to show superhumps with a period of 0.053 d (single-night baseline, amplitude 0.18 mag). Itoh-san also contributed in the earlier stage of the outburst.

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[vsnet-alert 27029] PY Per in low state
by Taichi Kato 09 Nov '22

09 Nov '22

PY Per in low state (Selected data) YYYYMMDD(UT) mag observer 20220726.8176 <159c (Yutaka Maeda) 20220802.7902 <153c (Yutaka Maeda) 20220825.7900 <164c (Yutaka Maeda) 20220826.8100 <155c (Yutaka Maeda) 20220827.187 <16.10C (Gary Poyner) 20220827.1888 <181C (Masao Funada) 20220827.7601 <156c (Yutaka Maeda) 20220830.7800 <163c (Yutaka Maeda) 20220907.1042 185C (Masao Funada) 20220909.6900 <153c (Yutaka Maeda) 20220913.6700 <158c (Yutaka Maeda) 20220928.094 <151 (Gary Poyner) 20220930.026 <147 (Gary Poyner) 20220930.6321 <153c (Yutaka Maeda) 20221001.5869 <158c (Yutaka Maeda) 20221003.003 <153 (Gary Poyner) 20221003.6386 <166c (Yutaka Maeda) 20221006.033 <147 (Gary Poyner) 20221012.7227 <157c (Yutaka Maeda) 20221013.7290 <156c (Yutaka Maeda) 20221014.7080 <158c (Yutaka Maeda) 20221015.7211 <149c (Yutaka Maeda) 20221016.048 <147 (Gary Poyner) 20221018.7242 <166c (Yutaka Maeda) 20221018.7918 <177C (Masayuki Moriyama) 20221019.6913 <156c (Yutaka Maeda) 20221023.5566 <162c (Yutaka Maeda) 20221024.5419 <165c (Yutaka Maeda) 20221025.7209 <160c (Yutaka Maeda) 20221028.7256 <160c (Yutaka Maeda) 20221030.7162 <164c (Yutaka Maeda) 20221030.831 <151 (Gary Poyner) 20221102.163 <17.50C (Gary Poyner) 20221102.1629 175C (Masao Funada) 20221102.7022 <152c (Yutaka Maeda) 20221103.6724 <150c (Yutaka Maeda) 20221104.033 <151 (Gary Poyner) 20221104.7055 <158c (Yutaka Maeda) 20221105.7008 <159c (Yutaka Maeda) 20221107.7040 <149c (Yutaka Maeda)

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[vsnet-alert 27028] MGAB-V233 likely superoutburst
by Taichi Kato 09 Nov '22

09 Nov '22

MGAB-V233 likely superoutburst ER UMa star. Duty cycle appears to be increasing recently. YYYYMMDD(UT) mag observer 20221012.7009 <169C (Masayuki Moriyama) 20221015.6871 154C (Masayuki Moriyama) 20221017.6898 <163C (Masayuki Moriyama) 20221022.7380 15.30C (Masayuki Moriyama) 20221027.6709 152C (Masayuki Moriyama) 20221029.6406 154C (Masayuki Moriyama) 20221030.6280 153C (Masayuki Moriyama) 20221104.6647 15.61C (Masayuki Moriyama) 20221106.6354 156C (Masayuki Moriyama)

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[vsnet-alert 27027] Gaia17abv likely superoutburst
by Taichi Kato 08 Nov '22

08 Nov '22

Gaia17abv likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221029.1179 16.668zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.1779 16.719zr (ZTF Alert DC mag (Masci+ 2019)) 20221029.1817 16.638zr (ZTF Alert DC mag (Masci+ 2019)) 20221106.1213 16.806zg (ZTF Alert DC mag (Masci+ 2019)) 20221106.1336 17.031zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27026] ASASSN-15pk: possible superoutburst
by Taichi Kato 08 Nov '22

08 Nov '22

ASASSN-15pk: possible superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221106.2645 15.937zg (ZTF Alert DC mag (Masci+ 2019)) 20221106.5070 16.313zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27025] ZTF18abpoeao: possible superoutburst
by Taichi Kato 08 Nov '22

08 Nov '22

ZTF18abpoeao: possible superoutburst Judged from rapid fading of short outbursts in ZTF data. YYYYMMDD(UT) mag observer 20221029.1300 15.640zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.2401 15.876zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1223 16.100zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1653 16.114zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27024] TCPJ00280458+4232544: possible superoutburst (AM CVn?)
by Taichi Kato 08 Nov '22

08 Nov '22

TCPJ00280458+4232544: possible superoutburst (AM CVn?) Complex outburst in ZTF data in 2019 Sep.-Oct. (resembling an AM CVn-type superoutburst).. YYYYMMDD(UT) mag observer 20221027.2858 18.053zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.2863 18.079zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.3240 17.715zg (ZTF Alert DC mag (Masci+ 2019)) 20221027.3245 17.787zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.2795 18.378zr (ZTF Alert DC mag (Masci+ 2019)) 20221029.2809 18.382zr (ZTF Alert DC mag (Masci+ 2019)) 20221029.3309 18.053zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.3498 18.024zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27023] CRTS J231552.3+271037 possible superoutburst
by Taichi Kato 08 Nov '22

08 Nov '22

CRTS J231552.3+271037 possible superoutburst Suspected type from ZTF data (based on the presence of a few short outbursts). YYYYMMDD(UT) mag observer 20221019.1704 19.282zr (ZTF Alert DC mag (Masci+ 2019)) 20221021.1533 19.051zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.2657 17.667zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.3003 17.548zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.2562 15.604zr (ZTF Alert DC mag (Masci+ 2019)) 20221029.3318 15.362zg (ZTF Alert DC mag (Masci+ 2019)) 20221031.1314 15.052zr (ZTF Alert DC mag (Masci+ 2019))

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vsnet-alert November 2022