vsnet-alert August 2024

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

3 participants
3 discussions

[vsnet-alert 28017] ASASSN-24fo: new WZ Sge-type dwarf nova
by Yusuke Tampo 29 Aug '24

29 Aug '24

ASASSN-24fo: new WZ Sge-type dwarf nova ASASSN-24fo was discovered on 2024-08-25.14 by the ASAS-SN team with an ~8.5 mag outburst amplitude. Sjoerd Dufoer and Josch Hambsch reported time-resolved observations. These observations detected a double-waved variation with an amplitude of 0.04 mag and a period of 0.05691(5) d. Therefore ASASSN-24fo is a new WZ Sge-type dwarf nova Further observations are encouraged. Best regards, Yusuke -- ---------------------------------------------- South African Astronomical Observatory, Postdoc fellow Yusuke TAMPO MAIL: tampo(a)kusastro.kyoto-u.ac.jp MAIL: yusuke(a)saao.ac.za ----------------------------------------------

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[vsnet-alert 28016] TCP J19470832-0924198: new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 17 Aug '24

17 Aug '24

Dear colleagues, I have just finished analysing my unfiltered CCD observations of TCP J19470832-0924198, obtained on 2024, Aug 13/14 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera under clear skies. The resulting light curve clearly shows the presence of superhumps with an amplitude of 0.30 mag, establishing TCP J19470832-0924198 as a new SU UMa-type dwarf nova. A period analysis, using the ANOVA, Lomb-Scargle, Generalized-Lomb-Scargle and PDM methods (Peranso 3.0) yields a combined superhump period of 0.0565 +/- 0.0012d. The object was at mag CV = 15.0 on Aug 13th. Image calibration and photometry were done using my new photometry software Phoranso 1.0.4.6 I will send my observations to AAVSO, CBA and VSNET for further analysis. Best regards Tonny --- Tonny Vanmunster CBA Belgium Observatory CBA Extremadura Observatory http://www.cbabelgium.co <http://www.cbabelgium.com/> m PERANSO : The Light Curve and Period Analysis Software http://www.peranso.co <http://www.peranso.com/> m PHORANSO: Photometric Reduction and Analysis Software *** NEW *** http://www.phoranso.com <http://www.phoranso.com/>

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[vsnet-alert 28015] LMC V1341: new recurrent nova eruption!
by Rod Stubbings 04 Aug '24

04 Aug '24

A new eruption of the recurrent nova LMC V1341! LMC V1341 240801.635 <140 LMC V1341 240803.666 132 LMC V1341 240803.712 132 -- 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-alert August 2024