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[vsnet-alert 3821] Detection of superhumps in UV Gem - a new member of the UGSU-type CV's
- Date: Tue, 14 Dec 1999 03:09:39 +0100
- To: "cba-news" <cba-news@astro.bio2.edu>, "vsnet-alert" <vsnet-alert@kusastro.kyoto-u.ac.jp>
- From: "Tonny Vanmunster" <Tonny.Vanmunster@advalvas.be>
- Subject: [vsnet-alert 3821] Detection of superhumps in UV Gem - a new member of the UGSU-type CV's
- Importance: Normal
- Reply-To: <Tonny.Vanmunster@advalvas.be>
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
Dear Colleagues,
I just finished a 4.4 hours CCD photometry run on UV Gem, using the 0.35-m f/6.3 telescope at CBA Belgium Observatory [1999, December 13/14]. The sky conditions were poor, with many clouds and stormy winds. All FITS images were acquired with an ST-7 CCD camera without filters, and were instanteneously processed and reduced (PSF photometry). The resulting real-time light curve clearly shows the presence of a 0.40 mag modulation, to be attributed to superhumps.
A first analysis of the superhump period yields a value of 0.0902d +/- 0.0006d or 2.17h.
These observations thus establish UV Gem as a new member of the UGSU type cataclysmic variables.
Kind regards,
Tonny Vanmunster
CBA Belgium Observatory
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