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

[vsnet-newvar 8926] Re: OGLE-MC-DN-0008 in outburst! (since Oct. 19)
by Taichi Kato 26 Oct '21

26 Oct '21

Re: OGLE-MC-DN-0008 in outburst! (since Oct. 19) It looks very likely from the light curve that this object developed superhumps in these days following a smooth decline. Superhumps should be present now.

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[vsnet-newvar 8925] OGLE-MC-DN-0008 in outburst! (since Oct. 19)
by Patrick Schmeer 26 Oct '21

26 Oct '21

OGLE-MC-DN-0008 (UG) https://www.aavso.org/vsx/index.php?view=detail.top&oid=478014 I just had a look at the latest ASAS-SN Sky Patrol data for OGLE-MC-DN-0008 and noticed that this dwarf nova is undergoing a rare outburst (which started on Oct. 17 or 18): https://asas-sn.osu.edu/sky-patrol/coordinate/d946ac58-407a-41d0-888f-842db… Time-resolved photometry is urgently required. Clear skies, Patrick ------- References: All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol: - Shappee et al., 2014ApJ...788...48S - Kochanek et al., 2017PASP..129j4502K

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[vsnet-newvar 8924] OT J002656.6+284933 likely superoutburst
by Taichi Kato 25 Oct '21

25 Oct '21

OT J002656.6+284933 likely superoutburst (=CSS101212:002657+284933) YYYYMMDD(UT) mag observer 20211013.6632 <159c (Yutaka Maeda) 20211014.6574 <167c (Yutaka Maeda) 20211015.6572 <165c (Yutaka Maeda) 20211017.6568 <158c (Yutaka Maeda) 20211023.5999 154:c (Yutaka Maeda)

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[vsnet-newvar 8923] Re: ASASSN-15bu outburst
by Taichi Kato 25 Oct '21

25 Oct '21

Re: ASASSN-15bu outburst YYYYMMDD(UT) mag observer 20211010.6173 <165c (Yutaka Maeda) 20211011.3704 17.274zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211014.6027 <163c (Yutaka Maeda) 20211015.6027 <159c (Yutaka Maeda) 20211017.6020 <159c (Yutaka Maeda) 20211023.6930 152:c (Yutaka Maeda) 20211024.2807 14.932zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8922] ASASSN-14ac superoutburst
by Taichi Kato 24 Oct '21

24 Oct '21

ASASSN-14ac superoutburst Outbursts in 2014 and 2018. The 2014 superoutburst was relatively well observed. YYYYMMDD(UT) mag observer 20211006.8029 <159c (Yutaka Maeda) 20211008.8082 <161c (Yutaka Maeda) 20211013.8024 161:c (Yutaka Maeda) 20211014.7122 16.84C (Masayuki Moriyama) 20211014.7931 162:c (Yutaka Maeda) 20211015.144 16.39C (Gary Poyner) 20211015.1459 16.24C (Masao Funada) 20211015.7931 156:cG (Yutaka Maeda) 20211017.6303 152:C (Masayuki Moriyama) 20211017.7927 153:cG (Yutaka Maeda)

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[vsnet-newvar 8921] ASASSN-21tq brightened further
by Taichi Kato 24 Oct '21

24 Oct '21

ASASSN-21tq brightened further Itoh-san reported V=14.0 on Oct. 23. Large outburst amplitude.

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[vsnet-newvar 8920] ZTF18ablqsov likely superoutburst
by Taichi Kato 24 Oct '21

24 Oct '21

ZTF18ablqsov likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20211023.1372 16.385zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211023.1969 16.200zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8919] Gaia17abv likely superoutburst
by Taichi Kato 24 Oct '21

24 Oct '21

Gaia17abv likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20211023.1434 16.579zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211023.1547 16.512zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211023.1979 16.237zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211023.1988 16.250zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8918] ASASSN-17fo outburst
by Taichi Kato 24 Oct '21

24 Oct '21

ASASSN-17fo outburst Eclipsing SU UMa star. YYYYMMDD(UT) mag observer 20211022.5343 16.166zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211022.5367 16.214zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211022.5391 16.240zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211022.5415 16.198zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211022.5438 16.238zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8917] CRTS J215636.3+193242 outburst
by Taichi Kato 24 Oct '21

24 Oct '21

CRTS J215636.3+193242 outburst Eclipsing possible SU UMa star. YYYYMMDD(UT) mag observer 20211023.1814 16.558zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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vsnet-newvar October 2021