[vsnet-chat 5285] Re: [vsnet-outburst 3787] VW Hyi brighter

["Stan Walker" <astroman@xtra.co.nz>]

Greetings, All,

These measures of VW Hydri illustrate an interesting feature of some dwarf
novae such as VW Hydri - a distinct pause on the rise. We noticed this with
pep measures from Auckland in the 1970s and it's clearly borne out by
statistics of the visual measures. But it's good to see it so clearly
defined by Rod's measures. For what it's worth the speed through this flat
region seems directly related to the amplitude of the outburst. The UBV
measures find that the colours are quite red at this stage - B-V about 0.5
as compared with the normal negative values.

Regards,
Stan

----- Original Message -----
From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
To: <vsnet-outburst@ooruri.kusastro.kyoto-u.ac.jp>
Sent: Friday, April 05, 2002 2:01 PM
Subject: [vsnet-outburst 3787] VW Hyi brighter


> VW Hyi brighter
>
>   YYYYMMDD(UT)   mag  observer
>   20020331.431   135  (Rod Stubbings)
>   20020401.428  <129  (Bruce Tregaskis)
>   20020401.451   137  (Rod Stubbings)
>   20020401.712   138  (Berto Monard)
>   20020404.450   130  (Rod Stubbings)
>   20020404.472   129  (Rod Stubbings)
>   20020404.496   129  (Rod Stubbings)
>   20020404.526   129  (Rod Stubbings)
>

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