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

[vsnet-chat 9288] Re: ASAS-SN light curve of V374 Ori
by Taichi Kato 07 Jan '23

07 Jan '23

> Indeed, Brian further checked and sent this note: I see that a batch of LAMOST CV: you recently registered to VSX were (probably) mostly junks. Most of a few real CVs among them had already been discovered by other surveys. For LAMOST CV: with flat light curves (usually bright ones with no other hint of CV activity), I created a category em (instead of only giving CST) representing emission-line objects.

1 0

[vsnet-chat 9280] ASAS-SN light curve of V374 Ori
by Taichi Kato 06 Jan '23

06 Jan '23

ASAS-SN light curve of V374 Ori See https://www.aavso.org/vsx/index.php?view=detail.top&oid=23437 https://www.aavso.org/orion-sword-variables-spectral-types I'm not aware of a CV with M1 secondary and (claimed) WD visible. Too faint in SDSS u and it does not look like that the continuum is from a WD. https://asas-sn.osu.edu/sky-patrol/coordinate/bed7352f-7f44-42cd-a242-99b32…

2 1

[vsnet-chat 9286] V453 Lyr: most likely SU UMa star
by Taichi Kato 04 Jan '23

04 Jan '23

V453 Lyr: most likely SU UMa star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object showed a rebrightening after the 2021 outburst. This object is worth visiting for the next outburst.

1 0

[vsnet-chat 9285] V1114 Cyg position and type
by Taichi Kato 04 Jan '23

04 Jan '23

V1114 Cyg position and type According to M. Hiraga-san (2020 July), the outbursting object was identified with 192436.705 +282602.72 (2000.0) Gaia_DR2_2026051423495985024 plx=0.537(0.377) dismod=11.3 pmra=-6.229(0.916) pmdec=-3.546(0.735) G=19.341 BP=19.568 RP=18.371 192436.704 +282602.72 (2000.0) Gaia_EDR3_2026051423495985024 plx=0.910(0.114) dismod=10.2 pmra=-4.515(0.094) pmdec=-2.729(0.126) G=19.220 BP=19.785 RP=18.349 ATLAS data appear to suppprt the SS Cyg-type classification.

1 0

[vsnet-chat 9284] VSOLJ Variable Star Bulletin No.104
by meineko 03 Jan '23

03 Jan '23

VSOLJ Variable Star Bulletin no.104 is now available at http://vsolj.cetus-net.org/bulletin.html No.104 2023 Jan. Very low state in PY Per in 2022 Taichi Kato Seiichiro Kiyota VSOLJ

1 0

[vsnet-chat 9283] V598 Sco: Z Cam star
by Taichi Kato 03 Jan '23

03 Jan '23

V598 Sco: Z Cam star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object is a Z Cam star. Standstill in 2022 Apr.-May (rising like IW And, but the termination was not recorded).

1 0

[vsnet-chat 9282] AS Pav: most likely SU UMa star
by Taichi Kato 03 Jan '23

03 Jan '23

AS Pav: most likely SU UMa star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object is most likely an SU UMa star. Unmistakable superoutburst occurred in 2022 June-July. This outburst was also detected by Rod Stubbings. Let's try next time.

1 0

[vsnet-chat 9281] V975 Oph: likely bright SU UMa star
by Taichi Kato 03 Jan '23

03 Jan '23

V975 Oph: likely bright SU UMa star Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I found that this object is most likely an SU UMa star. The most recent superoutburst occurred in 2022 Sep. (14.4 mag). Superhumps were likely present in the spread of ATLAS measurements. The supercycle was likely around 270 d (measurement hindered by solar conjunctions).

1 0

2024

2023

2022

2021

vsnet-chat January 2023