[vsnet-chat 64] Re: SRc variables as supernova progenitors

[Toshihito Ishida <ishida@nhao.go.jp>]

Dear VSnet chatters; 

I will make only a short comment here. 

 On 1997-02-10 tkato@kusastro.kyoto-u.ac.jp wrote:
> 
> Encouraged to hear this!  This star then well deserves observer's
> nightly visit -- as well as other SRc variables.  If one can visit
> 1000 SRc variables, there may be a chance to catch a supernova
> explosion in 1000 years -- am I right?   I wonder what the

If we can do it, surely Dr. Kato is right.  However, if the SRc 
stage is so short in stellar evolution,  there exist only about 300 
(for example)  SRc variables in our Galaxy, may be.   

We may ought to consider it in reverse order.  Our rate of catching 
supernovae in our Galaxy constraints the total number of nearby SRc 
variables.  

regards, 

-- 
%  Toshihito ISHIDA, Ph. D., Astrophysicist                               %
%  Nishi-Harima Astronomical Observatory, Sayo-cho, Hyogo 679-53, JAPAN   %
%  Tel:     +81-790-82-3886 ext. 142      Telefax: +81-790-82-3514        %
%  e-mail: ishida@nhao.go.jp (usual) HQA01560@niftyserve.or.jp (off time) %

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