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[vsnet-obs 5494] DV UMa - New SU UMa type dwarf nova
- Date: Thu, 10 Apr 1997 13:14:50 +0200
- To: vsnet-alert@kusastro.kyoto-u.ac.jp, vsnet-obs@kusastro.kyoto-u.ac.jp
- From: VANMUNSTER Tonny <tvm@lms.be>
- Subject: [vsnet-obs 5494] DV UMa - New SU UMa type dwarf nova
- Cc: tvanmuns@innet.be, cba-info@astro.columbia.edu
- Organization: LMS International
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Dear Colleagues,
I performed unfiltered time series photometry on DV UMa at
CBA Belgium Observatory last night (April 9/10, 1997),
during 4.8 hours.
The resulting light curve shows three eclipses and very
prominent superhumps. These observations thus establish
DV UMa as a new member of the UGSU-type dwarf novae.
I will determine an exact superhump period value shortly,
using the PDM method. A rough inspection of the data
already yields a value of 0.0837 d.
I will also shortly calculate the mid-eclipse times, allowing
me to check the eclipse timing ephemeris published by
Taichi Kato in an earlier VSNET message.
Best regards,
Tonny Vanmunster
CBA Belgium