[vsnet-alert 5368] IX Dra - a new UGSU type variable

["Tonny Vanmunster" <Tonny.Vanmunster@advalvas.be>]

Dear colleagues,

I started a CCD photometry session on IX Dra (= KUV18126+6704 or Dra6 in DW&S), about 4.5 hours ago, using the 0.35-m f/6.3 telescope at CBA Belgium Observatory [2000, November 04/05]. All FITS images are acquired with an ST-7 CCD camera without filters, and are instanteneously processed and reduced (PSF photometry). The resulting real-time light curve clearly shows the presence of a 0.22 mag modulation, to be attributed to superhumps. A first rough estimate of the superhump period yields a value of 0.070d. This value will certainly be improved as more observations become available in the course of the night. IX Dra currently is at mag 15.4 (unfiltered).

The above observations thus establish IX Dra as a new member of the UGSU type of cataclysmic variables !

Further high-speed photometry is highly recommended, to settle the precise superhump period value. Support from other observatories would be highly appreciated.

Best regards,

Tonny Vanmunster
CBA Belgium Observatory

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