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

[vsnet-newvar 9727] Re: RX J1831.7+6511: new IW And star
by Taichi Kato 20 Jan '23

20 Jan '23

Re: RX J1831.7+6511: new IW And star > Although "dips" were not caught (likely below the limit > of ASAS-SN), According to ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), no dips were present. I changed to UGZ:

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[vsnet-newvar 9726] ASASSN-V J202511.39+250535.3 large-amplitude dwarf nova state
by Taichi Kato 20 Jan '23

20 Jan '23

ASASSN-V J202511.39+250535.3 large-amplitude dwarf nova state According to Moriyama-san and ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), this IW And star has been showing large-amplitude dwarf nova outburst (4 mag) since 2022 (dwarf nova state in 2021 with smaller amplitudes).

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[vsnet-newvar 9725] DDE 35 sudden brightening, UGZ+VY Scl
by Taichi Kato 20 Jan '23

20 Jan '23

DDE 35 sudden brightening, UGZ+VY Scl Kyoto U. team reported sudden brightening of DDE 35 on Jan. 18. Looking at ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), this object has been showing dwarf nova outburst since 2022. I have adopted a classification of UGZ+VY Scl. Recent data: YYYYMMDD(UT) mag observer 20230103.583 162C (Mitsutaka Hiraga) 20230107.824 164C (Mitsutaka Hiraga) 20230107.8295 159C (Masayuki Moriyama) 20230108.617 162C (Mitsutaka Hiraga) 20230110.594 166C (Mitsutaka Hiraga) 20230111.538 166C (Mitsutaka Hiraga) 20230115.5038 16.469o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.5057 16.812o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.5209 17.359o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.5259 16.769o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.5914 14.469o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.5951 14.484o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.6005 14.478o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230119.6358 14.501o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9724] PS1-3PIJ072307.88-262324.1 = ATOJ110.7828-26.3900: Z Cam star
by Taichi Kato 19 Jan '23

19 Jan '23

PS1-3PIJ072307.88-262324.1 = ATOJ110.7828-26.3900: Z Cam star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021). Range 16.6-18.0 (ATLAS). Low-amplitude dwarf nova (particularly before 2018). Currently in bright state (standstill).

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[vsnet-newvar 9723] SSSJ053711.5-291024: SS Cyg
by Taichi Kato 19 Jan '23

19 Jan '23

SSSJ053711.5-291024: SS Cyg Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021). Range 15.3-18.5 (ATLAS). SS Cyg star. Some moment with reduced outburst amplitudes and may show a standstill in future.

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[vsnet-newvar 9722] PS1-3PIJ071955.19-290936.8 = ATOJ109.9799-29.1602: VY Scl
by Taichi Kato 19 Jan '23

19 Jan '23

PS1-3PIJ071955.19-290936.8 = ATOJ109.9799-29.1602: VY Scl Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021). Range 16.4-18.9 (ATLAS). Currently in low state.

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[vsnet-newvar 9721] PS1-3PIJ165201.33-275639.3: very clear SU UMa star
by Taichi Kato 19 Jan '23

19 Jan '23

PS1-3PIJ165201.33-275639.3: very clear SU UMa star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021). Range 16.2-19 (ATLAS). Supercycle about 120 d.

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[vsnet-newvar 9720] PS1-3PIJ052121.70-280534.6 = ATOJ080.3404-28.0929 = Gaia DR3 2954977189443579008: bright IW And star
by Taichi Kato 19 Jan '23

19 Jan '23

PS1-3PIJ052121.70-280534.6 = ATOJ080.3404-28.0929 = Gaia DR3 2954977189443579008: bright IW And star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021). Range 14.5-18.0 (ATLAS).

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[vsnet-newvar 9719] Re: 6dFg0752425-545120 outburst
by Taichi Kato 19 Jan '23

19 Jan '23

Re: 6dFg0752425-545120 outburst This was an outburst in 2022 Dec. Well captured by ATLAS -- SS Cyg-type outburst.

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[vsnet-newvar 9718] ASASSN-23af = TCP J05361640-3151065 early data
by Taichi Kato 19 Jan '23

19 Jan '23

ASASSN-23af = TCP J05361640-3151065 early data YYYYMMDD(UT) mag observer 20230112.2959 <15.977g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230112.2972 <15.963g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230112.2985 <16.116g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230113.1380 14.191o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.1409 14.168o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.1471 14.153o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.1567 14.136o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.1851 13.742g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230113.1864 13.717g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230113.1876 13.702g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230113.3165 13.424g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230113.3177 13.389g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230113.3190 13.399g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230114.1580 13.635o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.1607 13.652o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.1663 13.617o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.1725 13.237g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230114.1738 13.262g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230114.1751 13.289g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230114.1776 13.632o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.2053 13.247g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230114.2065 13.271g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230114.2078 13.278g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230114.9077 13.440c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.9109 13.437c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.9145 13.460c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.9192 13.457c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230114.9273 13.434c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.8715 13.560c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.8746 13.537c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.8803 13.568c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230115.8914 13.584c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230117.1355 13.920o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230117.1393 13.963o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230117.1447 13.716o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230117.1559 13.956o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230118.1149 14.221o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230118.1190 14.232o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230118.1253 14.189o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230118.1361 14.072o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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