[vsnet-chat 2875] Re: CI Aql

[Patrick Schmeer <p.schmeer@mx.uni-saarland.de>]

On Tue, May 02, 2000 at 09:28:56PM +0200, eddy muyllaert wrote:
> Hi all,
> 
> Concerning the (recurrent) nova in Aquila,  shouldn't it be fading by now.
> As stated in the IAU Circular No. 7409 :'The spectrum is similar to those of
> fast novae a few weeks after maximum.'
> And if the nova is truly the recurrence of CI Aql, shouldn't the fading by 2
> magnitudes (t2) be around 2 to 4 days (like U Sco, T CrB or RS Oph)?
 
Unfortunately we do not know the time of maximum brightness of the current
eruption, since no information is (yet) available for the interval Apr. 13-28.
Had I only decided to add this CV to my observing program(s) a few days/weeks
earlier and not just hours before the eruption was announced :-(
There would have been several opportunities for me to observe the CI Aql field
without any problem (e.g. on Apr. 26).
 
Eddy seems also to have ignored the fact that not all recurrent nova light-
curves have a t2 of few days: see the slow recurrent nova T Pyx 
 
If the current brightening of CI Aql is a classical nova eruption, what could
the 1917 event have been? A dwarf nova outburst (like those in V1017 Sgr)? 
 
Regards,
Patrick

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