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

[vsnet-campaign-dn 15935] Gaia21dzx
by Taichi Kato 31 Aug '21

31 Aug '21

Gaia21dzx Most likely a large-amplitude dwarf nova. http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21dzx/ Gaia21dzx AT2021xgr 2021-08-26 21:58:43 286.00866 -35.39330 15.00 unknown 2021-08-30 23:17:11 apparently hostless transient 190402.108 -352336.26 (2000.0) GALEX_DR5_6383934048320887191 NUV=20.335(0.149) FUV=19.657(0.107)

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[vsnet-campaign-dn 15934] NSV 1440 likely superoutburst
by Patrick Schmeer 30 Aug '21

30 Aug '21

NSV 1440 (AM CVn star) Orbital period: 0.0252329 d (36.3354 min) https://www.aavso.org/vsx/index.php?view=detail.top&oid=40064 A precursor outburst was recorded on 2021 August 26, according to recent 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/sky-patrol/coordinate/7915bb9f-d7c9-4e0c-b378-02749… The most recently observed superoutburst occurred in 2019 February. Time-resolved photometry is urgently required. Clear skies, Patrick ------- Am Montag, 30. August 2021, 18:23:06 MESZ hat Rod Stubbings Folgendes geschrieben: The AM CVn-type object NSV 1440 is in bright outburst. NSV 1440 210830.519 129 -- Rod Stubbings Tetoora Road Observatory Victoria, Australia Telescope: "Infinity" 22" f/3.8 stubbo(a)dcsi.net.au http://rodstubbingsobservatory.wordpress.com/

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[vsnet-campaign-dn 15933] ASASSN-21qg: new SU UMa-type dwarf nova
by Taichi Kato 30 Aug '21

30 Aug '21

ASASSN-21qg: new SU UMa-type dwarf nova Berto Monard and Josch Hambsch have reported observations. This object shows superhumps with a period of 0.05539(5) d since Aug. 26.

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[vsnet-campaign-dn 15932]Gaia17bcx outburst
by Taichi Kato 27 Aug '21

27 Aug '21

Gaia17bcx outburst Relatively regular outbursts in the past ZTF data. Type not conclusive. YYYYMMDD(UT) mag observer 20210813.2639 20.441zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210820.2879 16.736zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210823.1819 16.064zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210823.2180 15.588zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 15931]CRTS J064804.5+414702 superoutburst
by Taichi Kato 27 Aug '21

27 Aug '21

CRTS J064804.5+414702 superoutburst YYYYMMDD(UT) mag observer 20210812.4971 18.805zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210812.5044 18.889zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.4860 16.310zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.4886 16.314zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.4911 16.353zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.4936 16.341zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.4962 16.331zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.4976 16.347zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.5000 16.321zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.5024 16.307zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.5048 16.263zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210817.5072 16.215zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.4863 16.495zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.4887 16.476zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.4912 16.449zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.4936 16.450zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.4960 16.401zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.4980 16.387zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.5003 16.364zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.5027 16.342zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.5051 16.330zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210818.5075 16.346zr (Zwicky Transient Facility Lasair (Masci+ 2019)) Also Gaia detection: http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21dyz/

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vsnet-campaign-dn August 2021