[vsnet-alert 17921] Re: OT J030929.8+263804: early superhumps?

[Tonny Vanmunster]

Dear colleagues,

I have started an unfiltered CCD photometry session of this target at CBA
Belgium Observatory early this evening, which is still ongoing. An
intermediate analysis of the light curve shows a complex, likely double
humped structure of light variations with an amplitude of approx 0.04 mag.
This might point to the emergence of early superhumps, so I expect this will
soon turn out to be a WZ Sge-type dwarf nova.

A very preliminary period analysis using the PDM method (Peranso), yields a
period of 0.057(2) d. 

Observations are made with a 0.35-m f/6.3 telescope and STT-3200ME CCD
camera (unfiltered), and will later on be sent to CBA and VSNET for further
analysis.

Best regards
Tonny  

www.cbabelgium.com
www.peranso.com


-----Original Message-----
From: vsnet-alert-bounces at ooruri.kusastro.kyoto-u.ac.jp
[mailto:vsnet-alert-bounces at ooruri.kusastro.kyoto-u.ac.jp] On Behalf Of
Taichi Kato
Sent: vrijdag 31 oktober 2014 8:43
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vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp; vsnet-alert at yahoogroups.com;
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Subject: [vsnet-alert 17918] OT J030929.8+263804: early superhumps?

OT J030929.8+263804: early superhumps?

   (Name changed because we now have good astrometry, supporting the ID with
the SDSS blue star)

   Gianluca Masi and Enrique de Miguel have reported observations.
Low-amplitude variations were present.
An analysis yielded a period of 0.0554(2) d with an amplitude of 0.02 mag.
The profile was not, however, doubly humped as in early superhumps in many
WZ Sge-type dwarf novae.