[vsnet-chat 3771] Re: WX Hyi behaviour

Hi Berto,

I noticed your question and TK's reply. But both of you know what the dates and durations were - the rest of us don't. So I'm not sure what TK is really saying, or what you're asking. Could you elaborate a little? I think the interval you should be considering is between successive normal outbursts - the superoutburst is a completely different event which - from an observational viewpoint - doesn't affect the normal outbursts much. There seems to be a shortening of the cycle and a reduction in amplitude, but this is not as evident in the systems with fewer normal outbursts.

What is this 'complete cleaning' phase you mention involving hydrogen? This seems more of a nova phenomenon.

Regards,

Stan

----- Original Message -----

From: Berto Monard

To: vsnet-chat@kusastro.kyoto-u.ac.jp

Sent: Wednesday, November 15, 2000 7:15 PM

Subject: [vsnet-chat 3767] WX Hyi behaviour

Hi,

WX Hyi has just shown the following sequence of events in succession

1. normal outburst

2. superoutburst

3. another normal (?) outburst, ongoing at this moment.

Phases 1 and 2 do occur in succession with other systems too.

However event 3 seems a bit out of phase. The going theory spells that the superoutburst is the 'complete cleaning' phase, iow all H is burned away.

What happens to WX Hyi then for it still to have another outburst? Is it unstable mass transfer by the secondary triggered by the past s/outburst or is it due to another unrelated activity?

Do I hear 'flickering'?

Regards,

Berto Monard

[vsnet-chat 3771] Re: WX Hyi behaviour

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