TCPJ23580961+5502508: new WZ Sge-type dwarf nova
Kyoto Univ. Obs. observed TCPJ23580961+5502508 on 30th Sep.
We detected early superhumps with a period of ~0.060 d, and an amplitude of
0.2 mag!
Therefore TCPJ23580961+5502508 is a new WZ Sge-type dwarf nova, and also
has one of the largest early superhump amplitude.
Follow-up photometry is strongly encouraged.
Best,Yusuke
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Kyoto University, Graduate School of Department of Astronomy, PhD …
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Yusuke TAMPO
MAIL: tampo(a)kusastro.kyoto-u.ac.jp
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Dear colleagues,
I have just finished analysing my unfiltered CCD observations of TCP
J22561804+4109534, obtained on 2022, July 04/05 at CBA Belgium Observatory,
using a 0.40-m f/10.0 telescope and QHY-286M CMOS camera under clear skies.
I have been observing this object during multiple nights between June 27th
and now. On all previous nights, no obvious modulations were visible in the
light curve, except for last night when superhumps with an amplitude of 0.14
mag became very clearly visible. …
[View More]A period analysis using the ANOVA,
Lomb-Scargle, Generalized-Lomb-Scargle and PDM methods (Peranso 3.0), yields
a combined superhump period of 0.0650 +/- 0.0011d. The object was at mag CV
= 15.3 on Jul 05th.
The superhump profile shows no signs of a double-waved pattern, and I could
not detect early superhumps in my data. Yet, the large outburst amplitude of
~7.4 mag, and the long time for superhumps to develop (approx. 9 days) make
this a very likely WZ Sge-type dwarf nova. Follow-up observations are
recommended to further track the evolution of the superhumps.
I will send my observations to AAVSO, CBA and VSNET for further analysis.
Best regards
Tonny
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Tonny Vanmunster
CBA Belgium Observatory
CBA Extremadura Observatory
http://www.cbabelgium.com
PERANSO : The Light Curve and Period Analysis Software
http://www.peranso.com
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