September 2021 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 8702] MGAB-V481: SU UMa star
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V481: SU UMa star ZTF time-resolved data recorded superhumps on 2018 Aug. 17 and 18.

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[vsnet-newvar 8701] MGAB-V439: Z Cam star
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V439: Z Cam star From ZTF data. Standstill in 2020 Nov.-2021 Apr.

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[vsnet-newvar 8700] MGAB-V432: orbital period
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V432: orbital period From ZTF data. Porb=0.1844186(3) d. UGSS+E.

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[vsnet-newvar 8699] MGAB-V390: deeply eclipsing, low-amplitude dwarf nova
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V390: deeply eclipsing, low-amplitude dwarf nova From ZTF data. Porb=0.1553445(2) d. Eclipse nearly 3.0 mag. Low-amplitude SS Cyg-type dwarf nova (as of now, standstill may be expected).

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[vsnet-newvar 8698] Gaia21ebn
by Taichi Kato 02 Sep '21

02 Sep '21

Gaia21ebn http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21ebn/ Gaia21ebn AT2021xmg 2021-08-30 05:31:01 231.85226 49.65244 15.62 20.80 0.14 unknown 2021-09-01 21:10:07 ~5.5 mag outburst in Gaia source, candidate CV 152724.549 +493908.75 (2000.0) Gaia_DR2_1594504929308679936 plx=1.466(2.309) dismod=9.2 pmra=-29.339(3.569) pmdec=-6.083(2.522) G=20.762 BP=20.771 RP=20.492 152724.548 +493908.75 (2000.0) Gaia_EDR3_1594504929308679936 plx=0.787(1.051) dismod=10.5 pmra=-24.946(1.010) pmdec=-2.408(1.109) G=20.719 BP=20.769 RP=20.379 152724.599 +493908.96 (2000.0) GALEX_DR5_6374961960421690918 NUV=22.040(0.429) FUV=-(-)

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[vsnet-newvar 8697] ZTF18aaxyrpd: VY Scl+E
by Taichi Kato 02 Sep '21

02 Sep '21

ZTF18aaxyrpd: VY Scl+E According to ZTF data, Porb = 0.1292706(1) with 0.4 mag eclipses. Faint state in 2019 Aug.-Sep.

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[vsnet-newvar 8696] ZTF18aaxyrpd: IW And star
by Taichi Kato 02 Sep '21

02 Sep '21

ZTF18aaxyrpd: IW And star According to ZTF data, this object is a typical IW And star (pattern well visible in the 2020 data).

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[vsnet-newvar 8695] ZTF18acullhv: possible AM CVn star
by Taichi Kato 02 Sep '21

02 Sep '21

ZTF18acullhv: possible AM CVn star According to ZTF data, this object showed complex outbursts similar to AM CVn-type superoutbursts. 064321.2 -234008 (2000.0) Gaia_DR2_2925381050846472192 group_C4 g=16.742(0.543) Mowlavi2020 064321.279 -234008.94 (2000.0) Gaia_DR2_2925381050846472064 plx=-(-) dismod=- pmra=-(-) pmdec=-(-) G=16.742 BP=16.680 RP=16.692 064321.280 -234008.96 (2000.0) Gaia_EDR3_2925381050848348288 plx=1.868(0.088) dismod=8.6 pmra=17.795(0.054) pmdec=-33.375(0.077) G=18.596 BP=18.550 RP=18.445 Blue and low-luminosity (M_V = +6.3 at max), consistent with the AM CVn-type classification. This object is bright (15 mag at max) and further observations to search for superhumps and spectroscopy are desirable.

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[vsnet-newvar 8694] ZTF18abjgdkx: deeply eclipsing likely IW And star
by Taichi Kato 02 Sep '21

02 Sep '21

ZTF18abjgdkx: deeply eclipsing likely IW And star According to ZTF data, this object shows deep (1.2 mag) eclipses. The period is 0.2108865(4) d. The overall light curve suggests an IW And star (particularly in 2020).

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vsnet-newvar September 2021