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

[vsnet-alert 27172] GZ Cnc superhumps
by Taichi Kato 06 Dec '22

06 Dec '22

GZ Cnc superhumps Vihorlat Observatory team and Itoh-san recorded the superoutburst. The mean superhump period is 0.09368(4) d. The amplitude reached 0.35 mag around the peak.

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[vsnet-alert 27171] Wils_SDSSJ074859.55+312512.6 superoutburst
by Taichi Kato 06 Dec '22

06 Dec '22

Wils_SDSSJ074859.55+312512.6 superoutburst Knwon eclipsing SU UMa star. YYYYMMDD(UT) mag observer 20221121.7604 <158c (Yutaka Maeda) 20221124.7265 <152c (Yutaka Maeda) 20221126.7269 <156c (Yutaka Maeda) 20221202.878 167C (Mitsutaka Hiraga) 20221205.7440 160:c (Yutaka Maeda)

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[vsnet-alert 27170] GL Sge outburst
by Taichi Kato 06 Dec '22

06 Dec '22

GL Sge outburst Knwon SU UMa star. Relatively rare outburst. YYYYMMDD(UT) mag observer 20221115.5012 <150c (Yutaka Maeda) 20221116.5057 <152c (Yutaka Maeda) 20221121.5047 <150c (Yutaka Maeda) 20221124.5299 <168C (Masayuki Moriyama) 20221205.4841 161:C (Masayuki Moriyama)

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[vsnet-alert 27169] CRTSJ015051.5+332622 superoutburst
by Taichi Kato 06 Dec '22

06 Dec '22

CRTSJ015051.5+332622 superoutburst Knwon SU UMa star. YYYYMMDD(UT) mag observer 20221121.1785 18.813zg (ZTF Alert DC mag (Masci+ 2019)) 20221121.2163 18.182zr (ZTF Alert DC mag (Masci+ 2019)) 20221121.7121 <151c (Yutaka Maeda) 20221123.2127 18.274zg (ZTF Alert DC mag (Masci+ 2019)) 20221123.2152 18.270zg (ZTF Alert DC mag (Masci+ 2019)) 20221123.2386 17.961zr (ZTF Alert DC mag (Masci+ 2019)) 20221123.2453 17.746zr (ZTF Alert DC mag (Masci+ 2019)) 20221123.5591 <155c (Yutaka Maeda) 20221124.5718 <159c (Yutaka Maeda) 20221126.5644 <161c (Yutaka Maeda) 20221202.5622 150c (Yutaka Maeda) 20221205.5826 145cG (Yutaka Maeda) 20221205.5826 145cG (Yutaka Maeda)

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[vsnet-alert 27168] NN Cam outburst
by Taichi Kato 06 Dec '22

06 Dec '22

NN Cam outburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221130.583 <177c (Mitsutaka Hiraga) 20221202.6630 180:C (Masayuki Moriyama) 20221205.6236 13.89C (Masayuki Moriyama) 20221205.7242 132cG (Yutaka Maeda) 20221205.7242 132cG (Yutaka Maeda)

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[vsnet-alert 27167] ASASSN-15ui rebrightening
by Taichi Kato 06 Dec '22

06 Dec '22

ASASSN-15ui rebrightening YYYYMMDD(UT) mag observer 20221113.3896 14.918zg (ZTF Alert DC mag (Masci+ 2019)) 20221115.4250 15.071zg (ZTF Alert DC mag (Masci+ 2019)) 20221119.4016 15.706zg (ZTF Alert DC mag (Masci+ 2019)) 20221119.7185 15.80C (Masayuki Moriyama) 20221121.7420 158C (Masayuki Moriyama) 20221123.3533 15.926zg (ZTF Alert DC mag (Masci+ 2019)) 20221126.8448 <171C (Masayuki Moriyama) 20221202.7201 <179C (Masayuki Moriyama) 20221205.6945 168C (Masayuki Moriyama)

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[vsnet-alert 27166] ASASSN-15cr superoutburst
by Taichi Kato 06 Dec '22

06 Dec '22

ASASSN-15cr superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221115.7501 <157c (Yutaka Maeda) 20221121.7529 <153c (Yutaka Maeda) 20221123.610 <175C (Mitsutaka Hiraga) 20221124.7191 <154c (Yutaka Maeda) 20221126.7194 151:c (Yutaka Maeda) 20221126.7194 151:c (Yutaka Maeda) 20221130.592 151C (Mitsutaka Hiraga) 20221202.833 151C (Mitsutaka Hiraga) 20221205.7339 152cG (Yutaka Maeda) 20221205.7339 152cG (Yutaka Maeda)

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[vsnet-alert 27186] Re: DDE 35: more likely a polar
by 大島誠人 06 Dec '22

06 Dec '22

Re: DDE 35: more likely a polar According to GAIA data, this object underwent high states before 2018 several times. https://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia16aoy/ Regards, Tomohito Ohshima

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[vsnet-alert 27165] DDE 35: more likely a polar
by Taichi Kato 04 Dec '22

04 Dec '22

DDE 35: more likely a polar This object was classified as an SU UMa star based on superhump detection (vsnet-alert 24074). These humps, however, were seen only on two nights (2020 Mar. 16 and 18) and no humps were apparent on Mar. 19. The ZTF data show distinct high and low states unlike an SU UMa star (currently in bright state starting from late 2021). The magnitude (around 16) in 2020 Mar. was too faint (M_V=+6.6) for a superoutburst. The behavior suggests that the object is likely a polar. I have not been able to detect an orbital period in the ZTF data.

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[vsnet-alert 27164] ASASSN-13bz: SU UMa star (or even WZ Sge)
by Taichi Kato 04 Dec '22

04 Dec '22

ASASSN-13bz: SU UMa star (or even WZ Sge) Itoh-san detected superhumps on Dec. 3 (amplitude 0.12 mag). The period from single-night baseline is 0.059(1) d. I suspected this object to be an SS Cyg star based on the initial fading rate (0.2-0.4 mag/d) and the lack of superhumps, but this may have been a viscous decay phase of a WZ Sge star (considering the rarity of outbursts). Early superhumps may have not been present simply based on a low inclination.

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