[vsnet-chat 1549] Re: How fast is a Fast Nova?

[Taichi Kato <tkato>]

Re: [vsnet-chat 1546] Re: How fast is a Fast Nova?

> Has there been any systematic attempt by the VSO
> groups to monitor old novae fields, especially those
> that are different (like the fast novae)?  Perhaps
> they repeat on a more human-scale timeline.

   There have been attempts (and are now being done) to monitor some selected
old novae fields.  (Yes, selected ... once I tried to monitor "all" novae
field, but the attempt failed within a day ;-).  A good example of the
outcome is the visual discovery of the reccurent nature of V3890 Sgr.
This was a symbiotic-type reccurent nova, just as RS Oph, but there have
been systematic monitoring projects focusing on novae with small outburst
amplitudes.  The targets include X Ser, HR Lyr, etc., and more recently
introduced BC Cas, LS And, etc., for which some authors have suspected the
dwarf nova classification.  I also suspect the next event will be in
human-scale timeline, but even more reliably looking reccurent novae, like
T Pyx, have sometimes betrayed us more than ten years.

> I think the new wide-field surveys, such as LOTIS,
> where the entire sky is covered to ~15mag every
> night, have the potential of discovering a large
> number of bursting objects, such as CVs, flare
> stars and recurrent novae (if they are bright enough).

   I think surveys of this kind will be of extreme importance in the
next generation study of CVs.

> I haven't seen any such results from MACHO, OGLE, etc.

   The MACHO group indeed discovered a nova in the LMC (there is a very
good page at MACHO home page) and background SNe.  But the low priority of
these targets in their project, and the monitoring technique of millions
of stars, may not be perfectly designed for discovering novae or new CV
outbursts.  I think there will be good opportunities for amateurs to
conitnue monitoring and discovering these classes of objects.

Regards,
Taichi Kato

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