[vsnet-alert 10548] Re: Fw: Re: POSSIBLE NOVA IN AQUILA

[Daisaku NOGAMI]

Dear colleagues,

K. Ayani opened another spectrum of this possible nova in Aquila
into public, which was obtained at Sep. 26.57(UT).  The instrument
and exposure time were the same as before.  The new spectrum
covers the wave length of 600-900nm, while the old one did the
600-800nm region.  The spectrum is at
http://www.bao.go.jp/astro/2008/temp/PNAql2008_080926.png ,
and the one after 5-pix smoothing is at
http://www.bao.go.jp/astro/2008/temp/PNAql2008_080926sm.png .

He commented that there is still broad Halpha emission line,
and that we can see another broad emission line, possibly
attributable to O I 8446.

Best regards,
Daisaku Nogami

On Thu, 25 Sep 2008 11:54:44 +0900
Daisaku NOGAMI <nogami at kwasan.kyoto-u.ac.jp> wrote:

> Dear colleagues,
> 
> K. Ayani obtained a low resolution spectrum of the possible nova
> in Aquila through thin clouds, which was discovered by K. Itagaki
> (CBET 1512).  He used a 101cm telescope at the Bisei Astronomical
> Observatory, and the exposure time was 600sec.  The observations
> time was Sep. 24.5(UT).  The spectrum is viewed at:
> http://www.bao.go.jp/astro/2008/temp/PNAql2008_080924.png
> 
> This spectrum has a very red continuum, and the component bluer
> than 600nm was not detected under this condition.  We can see
> only quite broad Halpha emission line with FWHM of 6300 km/s
> (13.8nm), and atmospheric absorptions.  Note that the sharp
> peak around 630nm is due to noises.
> 
> Best regards,
> Daisaku Nogami