vsnet-campaign-dn March 2024

vsnet-campaign-dn@ooruri.kusastro.kyoto-u.ac.jp

2 participants
3 discussions

[vsnet-campaign-dn 17482] TCP J03383192+2712288: new SU UMa-type (or WZ Sge-type) dwarf nova
by tonny.vanmunster＠gmail.com 11 Mar '24

11 Mar '24

Dear colleagues, I have just finished analysing my unfiltered CMOS observations of TCP J03383192+2712288 obtained on 2024, Mar 08/09 at CBA Belgium Observatory using a 0.40-m f/10.0 telescope and QHY-268M CMOS camera, and on 2024, Mar 10/11 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera. In both cases, skies were not entirely clear. The resulting light curve clearly shows the presence of superhumps with an amplitude of 0.24 mag, establishing TCP J03383192+2712288 as a new SU UMa-type dwarf nova. A period analysis, using the ANOVA, Lomb-Scargle, Conditional Entropy and PDM methods (Peranso 3.0) yields a combined superhump period of 0.0542 +/- 0.0010d. The object was at mag CV = 16.4 on Mar 10th. Image calibration and photometry were done using a beta version of Phoranso. 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 - COMING SOON *** http://www.phoranso.com <http://www.phoranso.com/>

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[vsnet-campaign-dn 17481] IK Leo: superhumps
by Taichi Kato 04 Mar '24

04 Mar '24

IK Leo: superhumps Itoh-san has shown that this object started showing superhumps on Mar. 2. There was some indication of growing superhumps earlier.

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[vsnet-campaign-dn 17480] TCP J13530185+0522000: new SU UMa-type (likely WZ Sge) dwarf nova
by Taichi Kato 04 Mar '24

04 Mar '24

TCP J13530185+0522000: new SU UMa-type (likely WZ Sge) dwarf nova Itoh-san has shown that this object started showing superhumps on Mar. 2. The current period is 0.06041(4) d. The amplitude is 0.13 mag. The long waiting time suggests a WZ Sge star.

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vsnet-campaign-dn March 2024