[Aavso-photometry] some nova and CV updates

Bill Goff b-goff at sbcglobal.net
Tue Apr 24 12:51:18 EDT 2007


Is V5558 Sgr the same object as reported on Special Notice #44?

Bill


On Apr 23, 2007, at 12:15 PM, arne wrote:

>
> V5558 Sgr, a nova only discovered a few days ago, was studied
> by the Asiago and the Japanese NAYUTA groups.  Their spectra
> indicate that the emission line widths are quite small, and
> that FeII, MgII, SiII, NII lines are being seen.  This, coupled
> with the large outburst amplitude, makes this nova extremely
> interesting to the researchers.  If you can take time and monitor
> this nova, it would be useful.  We still haven't had any clear
> weather at Sonoita, but Mati Morel has created a visual sequence
> for this field, but it has not been uploaded to VSP yet - give
> us another day or so.  Be *very* careful about the companion
> star that is about 5arcsec NW of the variable - it is comparable
> in brightness at the red bandpasses, so will influence your CCD
> photometry.  It continues to brighten, so expect this object
> to get even brighter in the next few days.
>
>
> Good luck and clear skies!
> Arne



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