(cba:news) other candidate stars

Joe Patterson jop at astro.columbia.edu
Wed Oct 9 14:23:25 EDT 2024


To flesh out the previous note:

I'm fascinated by V1674 Her and DQ Her because they are the only with a 
complete pulse-period history since the nova outburst (in the case of DQ 
Her, I should say "since pulse discovery", but it's possible the pulse 
was there in the 20 years since the nova outburst, but nobody imagined 
that such a fast signal could come from a nova - Walker's 1954 discovery 
was considered shocking.  V407 Lupi might be a third such star, but it's 
still too lightly observed to know.

All other IPs have unknown eruption dates, probably centuries or 
millennia ago.

The seasonally-and-magnitude-appropriate IPs are also good targets now - 
AO Psc, FO Aqr, V1223 Sgr, etc.  IM Nor and T Pyx are too -because they 
are the two stars which appear to be lengthening their Porb at a 
meteoric rate, consistent with very fast evolution.

Not a complete list by any means.  Enrique may wish to supplement it - 
he keeps much better track of the IPs.

joe
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