DV UMa

As detected by J. Pietz on April 9, the eclipsing SU UMa-type dwarf nova DV UMa experienced a superoutburst (vsnet-campaign-dn 2280). M. Uemura reported that eclipses on April 9 had two components, one was presumably of a disk and the other was probably of a white dwarf or a very bright region in an inner accretion disk (vsnet-campaign-dn 2297, 2299, 2302). The Kyoto team performed time-series photometry and reported that superhumps decreased in amplitude with time. The profile of eclipses was asymmetric, indicating an eccentric disk during the early plateau phase of the superoutburst (vsnet-campaign-dn 2316). A. Oksanen also performed time-series observations and reported asymmetric eclipses which had a steep ingress and slower egress (vsnet-campaign-dn 2330). A. Oksanen reported that the object was 15.50mag on April 22 and the light curve became rather flatter (vsnet-campaign-dn 2333).

Other articles:
vsnet-campaign-dn 2282, 2288, 2292, 2281, 2312, 2323, 2324, 2337

Links:

Light curves provided by J. Pietz:
8/9 April rising part
http://home.t-online.de/home/Jochen.Pietz/dvuma1.gif

9/10 April first indications of humps
 http://home.t-online.de/home/Jochen.Pietz/dvuma2.gif

10/11 April overlapping humps and eclipses
 http://home.t-online.de/home/Jochen.Pietz/dvuma3.gif

11/12 April separated humps and eclipses
 http://home.t-online.de/home/Jochen.Pietz/dvuma4.gif

[vsnet-campaign-dn 2298]

General Information about This Object



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