vsnet-newvar April 2022

vsnet-newvar@ooruri.kusastro.kyoto-u.ac.jp

4 participants
128 discussions

[vsnet-newvar 9231] Gaia19bxc: very unusual object with a period of 0.04473647 d
by Taichi Kato 09 Apr '22

09 Apr '22

Re: Gaia19bxc: very unusual object with a period of 0.0223682 d Just a correction. P=0.04473647(3) d with two different maxima.

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[vsnet-newvar 9230] Gaia19bxc: very unusual object with a period of 0.0223682 d
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia19bxc: very unusual object with a period of 0.0223682 d From ZTF data. Polar-like orbital saw-tooth light curve (amplitude 1.3 mag) with P=0.0223682 d. Although this may be an intermediate polar with a very high amplitude (see Romanov V48, arXiv:2204.02598), I could not find a longer period. The SDSS color is red (faint in u, bright in z), possible detection in WISE W1. High and low states in ZTF data. Could be an ultrashort period polar.

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[vsnet-newvar 9229] Gaia19dal: IW And star
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia19dal: IW And star From ZTF data. Typical.

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[vsnet-newvar 9228] Gaia19dhy: most likely AM CVn-type dwarf nova
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia19dhy: most likely AM CVn-type dwarf nova From ZTF data. Short superoutburst, long dip, followed by rebrightenings. Long bright state continued.

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[vsnet-newvar 9227] Gaia19dnv: eclipsing polar
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia19dnv: eclipsing polar From ZTF data. Porb=0.0694359(2) d. Eclipse near the peak. Minimum of eclipse below the detection limit.

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[vsnet-newvar 9226] Gaia19dvf: most likely WZ Sge star
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia19dvf: most likely WZ Sge star From ZTF data. Long rebrightening.

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[vsnet-newvar 9225] Gaia19dyt: most likely WZ Sge star
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia19dyt: most likely WZ Sge star From ZTF data. Long rebrightening.

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[vsnet-newvar 9224] Gaia19eac: IW And star
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia19eac: IW And star From ZTF data. Typical in 2019-2020.

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[vsnet-newvar 9223] Gaia20ded: possible AM CVn-type dwarf nova
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia20ded: possible AM CVn-type dwarf nova From ZTF data. Short superoutburst, dip, rebrightening followed by long rebrightening.

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[vsnet-newvar 9222] Gaia20dlu: polar
by Taichi Kato 09 Apr '22

09 Apr '22

Gaia20dlu: polar From ZTF data. Porb=0.1009896(2) d. Single maximum per cycle.

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