[vsnet-alert 3813] (fwd) DV UMa (Martin)

[Taichi Kato <tkato>]

From bemart1@TELUSPLANET.NET Sun Dec 12 03:36 JST 1999
Date: Sat, 11 Dec 1999 11:36:52 -0700
From: brian <bemart1@TELUSPLANET.NET>
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To: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
Subject: Re: [vsnet-alert 3811] DV UMa eclipse and superhumps (update)
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Greetings

A clearing in the weather (temporary unfortunately!) allowed about 4 hours of
coverage on DV U Ma.  Light curve shows deep eclipses and very prominant
superhump during the morning of DEC 11(JD 2451523)

Light curve visible at:
http://vsnet.kingsu.ab.ca/%7Ebrian/astro/cba_alta/data_archive/dvuma/dvuma121199.gif

Regards

Brian Martin
CBA Alberta

Taichi Kato wrote:

> DV UMa eclipse and superhumps (update)
>
>    (cf. vsnet-alert 3796, 3801, 3803)
>
>     Preliminary analysis of the Dec. 10 observations ay Kyoto (M. Uemura
> and T. Kato) shows a remarkable growth of eclipses.  In contrast to
> shallow (0.9 mag) eclipses, we observed deep (up to 1.6 mag) eclipses
> as were observed during the 1997 superoutburst.  The observation, together
> with Novak's most important coverage of the rising stage (Dec. 8), clearly
> demonstrates the quick evolution of the accretion disk during the early
> stage of the rare superoutburst in this interesting SU UMa-type dwarf nova.
> More information and the new superhump period will be issued later by
> Uemura-san.
>
> Regards,
> Taichi Kato, Makoto Uemura, Rudolf Novak

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