[vsnet-alert 9696] Fw: [vsnet-outburst 8239] new dwarf nova in Pisces

[Daisaku NOGAMI]

Begin forwarded message:

Date: Thu, 8 Nov 2007 23:44:11 +0900 (JST)
From: Hitoshi YAMAOKA <yamaoka at rc.kyushu-u.ac.jp>
To: vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp
Subject: [vsnet-outburst 8239] new dwarf nova in Pisces


Dear all,

  I made a report to the CBAT as below.  H. Yamaoka

NEW CATACLYTHMIC VARIABLE IN PISCES
     Koichi Itagaki, Yamagata, Japan, reported his discovery (via H.
Yamaoka, Kyushu University) of a new object on the image taken around
Nov. 2.5 UT during his all-sky survey with the 0.21-m refl. + CCD.
The confirmation images taken on Nov. 2.572 UT with 0.50-m F/6 refl.
show that it is mag about 15.8, and the position is: R.A. =
23h11m10s.90, Decl.= +01d30'03".1.  He also detected it on Nov. 4.414
UT at the same brightness, but it was below mag 17.3 on his survey
image taken on Oct. 2 UT.  
     Responding the request for confirmation, K. Kinugasa, Gunma
Astronomical Observatory (GAO), K. Ayani and N. Murakami, Bisei
Astronomical Observatory (BAO), and Yamaoka took low-resolution
spectra of this object taken on Nov. 7.4 UT with the GAO 1.5-m refl.
and on 7.6 UT with the BAO 1.01-m refl..  It shows a smooth blue
continuum and a broad but shallow H-beta absorption is the most
prominent feature.  The H-alpha absorption is less impressive.  Both
of them seem to be filled by the emission core.  These characteristics
suggest that it is a dwarf nova in outburst.