March 2022 - vsnet-chat - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-chat 9046] MGAB-V931: UGZ:+E
by Taichi Kato 30 Mar '22

30 Mar '22

MGAB-V931: UGZ:+E From ZTF data. Porb=0.1432452(2) d. SS Cyg-type outbursts. Possible standstill in late 2021.

1 0

[vsnet-chat 9045] MGAB-V937: SU UMa star
by Taichi Kato 29 Mar '22

29 Mar '22

MGAB-V937: SU UMa star From ZTF data. Precursor + superoutburst in 2019 Sep. Superhumps were detected in ZTF data during this superoutburst.

1 0

[vsnet-chat 9044] MGAB-V941: eclipsing SU UMa star
by Taichi Kato 29 Mar '22

29 Mar '22

MGAB-V941: eclipsing SU UMa star From ZTF data. Porb = 0.0668301(3) d. Orbital humps were not apparent in quiescence. Long outbursts above 18 mag were superoutbursts.

1 0

[vsnet-chat 9043] MGAB-V951: IW And star
by Taichi Kato 29 Mar '22

29 Mar '22

MGAB-V951: IW And star From ZTF data. IW And phenomenon in 2021 Apr-Aug.

1 0

[vsnet-chat 9042] MGAB-V954: IW And star
by Taichi Kato 29 Mar '22

29 Mar '22

MGAB-V954: IW And star From ZTF data. IW And state throughout observation.

1 0

[vsnet-chat 9041] RomanovV48: object below the period minimum with a hot secondary?
by Taichi Kato 29 Mar '22

29 Mar '22

RomanovV48: object below the period minimum with a hot secondary? I have confirmed the period. P=0.0420991(1) d. Double-wave modulation with a marked hot spot? M_K = +4.5 suggests an evolved, luminous secondary (at least it's not an ordinary secondary of a polar). No apparent long-term modulation of the mean brightness. First non-DN EI Psc-type CV? Spectroscopy is strongly encouraged. 2MASS 201116.822 +600428.59 (2000.0) 16.600 16.289 15.386 201116.826 +600428.05 (2000.0) Gaia_DR2_2236896418906579072 plx=0.692(0.093) dismod=10.8 pmra=-4.787(0.228) pmdec=-7.973(0.240) G=17.369 BP=17.400 RP=17.007 201116.825 +600428.04 (2000.0) Gaia_EDR3_2236896418906579072 plx=0.693(0.065) dismod=10.8 pmra=-4.804(0.090) pmdec=-7.953(0.081) G=17.303 BP=17.407 RP=17.000 201116.892 +600428.18 (2000.0) GALEX_DR5_6372569504726126036 NUV=18.267(0.057) FUV=18.467(0.098)

1 0

[vsnet-chat 9040] SDSS J074037.67+254109.4: IW And star
by Taichi Kato 29 Mar '22

29 Mar '22

SDSS J074037.67+254109.4: IW And star From ZTF data. Heartbeat + dips in late 2020-early 2021.

1 0

[vsnet-chat 9039] Wils SDSSJ074500.58+332859.6: period
by Taichi Kato 29 Mar '22

29 Mar '22

Wils SDSSJ074500.58+332859.6: period P=0.0693237(1) d from ZTF data. Two-pole accretor (polar).

1 0

[vsnet-chat 9038] SDSS J162608.16+332827.8: period
by Taichi Kato 29 Mar '22

29 Mar '22

SDSS J162608.16+332827.8: period P=0.0660891(4) d from ZTF data. Single maximum per period.

1 0

[vsnet-chat 9037] ZTF18abmpkbj: likely ER UMa + Z Cam
by Taichi Kato 29 Mar '22

29 Mar '22

ZTF18abmpkbj: likely ER UMa + Z Cam From ZTF data. Entered a standstill in 2021 Sep.

1 0