November 2021 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16112] MASTER OT J204723.04+072759.1 possible superoutburst
by Taichi Kato 12 Nov '21

12 Nov '21

MASTER OT J204723.04+072759.1 possible superoutburst Possible type from ZTF data. Possible superoutburst + rebrightening in 2020 June. YYYYMMDD(UT) mag observer 20211031.4642 <159c (Yutaka Maeda) 20211101.4775 <154c (Yutaka Maeda) 20211102.4517 <150c (Yutaka Maeda) 20211103.4550 <160c (Yutaka Maeda) 20211107.4652 <152cG (Yutaka Maeda) 20211111.1108 15.345zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16111] CRTS J175633.3+572927 possible superoutburst
by Taichi Kato 12 Nov '21

12 Nov '21

CRTS J175633.3+572927 possible superoutburst Possible type from ZTF data. YYYYMMDD(UT) mag observer 20211103.1229 17.439zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211103.1401 17.669zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211105.0982 17.208zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211107.1200 16.682zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211109.1362 16.602zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211111.1208 16.717zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16110] CRTS J224753.9+235522 likely superoutburst
by Taichi Kato 12 Nov '21

12 Nov '21

CRTS J224753.9+235522 likely superoutburst The light curve looks likes a superoutburst. YYYYMMDD(UT) mag observer 20211015.1007 <180C (Eddy Muyllaert) 20211102.2383 15.465zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211102.2780 15.252zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211102.2822 15.214zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211104.1736 15.704zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211104.1760 15.681zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211104.2397 15.537zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211106.1524 15.738zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211106.1638 15.758zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211106.2258 15.948zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211106.2273 15.998zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211108.1297 16.147zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211111.1760 16.540zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16109] ASASSN-19sk: rapid fading
by Taichi Kato 12 Nov '21

12 Nov '21

ASASSN-19sk: rapid fading YYYYMMDD(UT) mag observer 20211104.5250 <161c (Yutaka Maeda) 20211105.8132 <143 (Eddy Muyllaert) 20211107.5478 124cG (Yutaka Maeda) 20211107.7905 126CV (NMW survey) 20211108.1338 14.293zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211108.8014 129 (Eddy Muyllaert) 20211109.887 14.71C (Gary Poyner) Itoh-san reported observations on two night. No superhump-like variation was seen on rapid fading.

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[vsnet-campaign-dn 16108] ASASSN-14fq likely superoutburst (since Oct. 31)
by Patrick Schmeer 12 Nov '21

12 Nov '21

ASASSN-14fq (UGSU:) https://www.aavso.org/vsx/index.php?view=detail.top&oid=399161 Recent ASAS-SN Sky Patrol light curve and data: https://asas-sn.osu.edu/sky-patrol/coordinate/30026e02-aae2-4312-9f9b-98222… ZTF light curve, data, and images (via Lasair): https://lasair.roe.ac.uk/object/ZTF20aaukual/ The current outburst started on 2021 October 31. Previous outbursts were recorded from 2014 August 16 to 25 and from 2020 March 19 to April 5 (rebrightening observed on April 15 by Gaia, see below). Time-resolved photometry is 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 Asteroid Terrestrial-impact Last Alert System (ATLAS): - Tonry et al., 2018PASP..130f4505T Lasair: - Smith et al., 2019RNAAS...3...26S Zwicky Transient Facility (ZTF): - Masci et al., 2019PASP..131a8003M ------- Am Freitag, 17. April 2020, 11:47:32 MESZ hat Patrick Schmeer pasc1312-aavso(a)yahoo.de via vsnet-alert <vsnet-alert(a)ooruri.kusastro.kyoto-u.ac.jp> Folgendes geschrieben: ASASSN-14fq (UGWZ:) https://www.aavso.org/vsx/index.php?view=detail.top&oid=399161 Gaia detection (Gaia20buz): http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia20buz/ ASASSN-14fq 20200322.224 15.42G Gaia ASASSN-14fq 20200415.255 17.46G Gaia ASASSN-14fq 20200415.329 17.41G Gaia Complete ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data: https://asas-sn.osu.edu/light_curves/8f0c73ae-a13b-4ebc-b9c3-f5bfcbec7d32 A previous (long) outburst was recorded 2014 August 16–25. Time-resolved photometry is encouraged (at least snapshots). Clear skies, Patrick

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[vsnet-campaign-dn 16107] ASASSN-21um: new SU UMa-type dwarf nova
by Taichi Kato 10 Nov '21

10 Nov '21

ASASSN-21um: new SU UMa-type dwarf nova Tamas Tordai has reported observations. The object shows 0.17-mag superhumps with a period of 0.087(1) d.

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[vsnet-campaign-dn 16106] ASASSN-18yi outburst!
by Taichi Kato 09 Nov '21

09 Nov '21

ASASSN-18yi outburst! Eclipsing SU UMa star above the period gap (P=0.16825 d). http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21fbh/ Gaia21fbh AT2021advs 2021-11-06 22:31:24 20.46764 -33.93771 15.36 18.84 1.08 CV 2021-11-07 20:20:40 outburst in confirmed CV ASASSN-18yi, previous outburst in lightcurve

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[vsnet-campaign-dn 16105] TCP J07363658+4151215: most likely helium WZ Sge-type dwarf nova
by Taichi Kato 05 Nov '21

05 Nov '21

TCP J07363658+4151215: most likely helium WZ Sge-type dwarf nova Kyoto U. team has reported observations. The data show early superhumps with an amplitudes of 0.05 mag. The period is 0.0280(2) d. This object is most likely a helium WZ Sge star. The SDSS color (very blue u-g=+0.27) is consistent.

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[vsnet-campaign-dn 16104] PV Per superoutburst
by Taichi Kato 04 Nov '21

04 Nov '21

PV Per superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20211028.6856 <146c (Yutaka Maeda) 20211029.6982 <148c (Yutaka Maeda) 20211030.928 <152 (Gary Poyner) 20211031.6835 <163c (Yutaka Maeda) 20211101.6974 155:cG (Yutaka Maeda) 20211102.6710 151c (Yutaka Maeda) 20211103.2152 14.928zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16103] MGAB-V320 likely superoutburst
by Taichi Kato 04 Nov '21

04 Nov '21

MGAB-V320 likely superoutburst Type from ZTF data. Object with a short supercycle. YYYYMMDD(UT) mag observer 20211103.1168 15.884zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211103.1449 15.966zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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vsnet-campaign-dn November 2021