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

[vsnet-chat 9300] 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.

1 0

[vsnet-chat 9299] 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).

1 0

[vsnet-chat 9298] Problem in https://arxiv.org/abs/2301.05870: Outburst Behaviour of the Dwarf Nova CG Draconi
by Taichi Kato 18 Jan '23

18 Jan '23

Problem in https://arxiv.org/abs/2301.05870: Outburst Behaviour of the Dwarf Nova CG Draconi The interpretation of the long outburst in this paper is incorrect. See e.g., https://ui.adsabs.harvard.edu/abs/2014PASJ...66...30K/abstract Fig. 88 and associated description.

1 0

[vsnet-chat 9297] DQ Mus: SS Cyg star
by Taichi Kato 13 Jan '23

13 Jan '23

DQ Mus: SS Cyg star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object is a frequently outbursting SS Cyg star (cycle length 15-20 d, currently in outburst). 2MASS 120022.062 -682935.97 (2000.0) 15.874 15.307 14.872 (in outburst) 120022.049 -682935.94 (2000.0) Gaia_DR2_5859470401309276544 plx=0.604(0.063) dismod=11.1 pmra=-5.704(0.116) pmdec=-0.383(0.118) G=17.740 BP=18.118 RP=17.004 120022.049 -682935.94 (2000.0) Gaia_EDR3_5859470401309276544 plx=0.759(0.049) dismod=10.6 pmra=-5.567(0.046) pmdec=-0.295(0.058) G=17.576 BP=18.087 RP=16.948

1 0

[vsnet-chat 9296] NSV13146: IW And star
by Taichi Kato 11 Jan '23

11 Jan '23

NSV13146: IW And star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object all variety of different states of an IW And star.

1 0

[vsnet-chat 9295] LP Vul: IW And star
by Taichi Kato 11 Jan '23

11 Jan '23

LP Vul: IW And star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object typical IW And behavior in 2022 June-Sep.

1 0

[vsnet-chat 9294] EW Hya: possible SU UMa
by Taichi Kato 10 Jan '23

10 Jan '23

EW Hya: possible SU UMa Based on ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), this object may be an SU UMa star. Precursor? + superoutburst in 2017 Mar. (also detected in ASAS-SN) and likely superoutburst in 2020 Apr.-May.

1 0

[vsnet-chat 9293] ASAS-SN light curve of CN Cha
by Taichi Kato 10 Jan '23

10 Jan '23

ASAS-SN light curve of CN Cha M+NC: https://asas-sn.osu.edu/sky-patrol/coordinate/e5bd43f3-0b40-4bd3-b720-49261… see https://ui.adsabs.harvard.edu/abs/2020AJ....160..125L/abstract

1 0

[vsnet-chat 9292] VSOLJ Variable Star Bulletin no.105
by meineko 09 Jan '23

09 Jan '23

VSOLJ Variable Star Bulletin no.105 is now available at http://vsolj.cetus-net.org/bulletin.html No.104 2023 Jan. LS And: WZ Sge-type outburst first time since the 1971 discovery Taichi Kato Seiichiro Kiyota VSOLJ

1 0

[vsnet-chat 9291] V890 Cen: dwarf nova
by Taichi Kato 08 Jan '23

08 Jan '23

V890 Cen: dwarf nova ATLAS data. Non-detection on the previous night. YYYYMMDD(UT) mag observer 20220327.9635 16.518c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220327.9648 16.467c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220327.9676 16.455c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220327.9933 16.426c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2146 16.562o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2180 16.529o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2207 16.528o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220330.2273 16.464o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2516 16.409o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2548 16.458o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2622 16.513o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220403.2973 16.621o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1352 17.487o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1668 17.344o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1709 17.281o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.1873 17.324o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.2619 17.207o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.2972 17.214o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.3256 17.440o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20220407.3506 17.416o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0