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IAUC 8443: N Pup 2004; 2004gd, 2004ge

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IAUC number

                                                  Circular No. 8443
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     S. Nakano, Sumoto, Japan, reports the independent discoveries
of an apparent nova by Akihiko Tago (Tsuyama, Okayama-ken, Japan;
at mag 7.6 on two T-Max 400 films taken with a Pentax 67 camera on
Nov. 20.672 UT), and Yukio Sakurai (Mito, Ibaragi-ken, Japan; two
CCD frames taken on Nov. 20.812 using a Fuji 'Fine Pix S2' camera +
Nikon 180-mm f/2.8 lens).  Tago gave the variable's position as
R.A. = 7h42m52s, Decl. = -27o06'35" (equinox 2000.0), adding that
nothing was visible at this location on his films from Nov. 16.76
(limiting mag 11.5).  Nakano measured position end figures
41m53s.76, 36".9 from Sakurai's image, which shows the variable at
mag 7.4; Sakurai notes that nothing was visible to mag 13.6 at this
location on Nov. 12 and 16.  Better-scale unfiltered CCD images
yield position end figures 41m53s.56, 38".3 by R. Kushida
(Yatsugatake South Base Observatory, 0.40-m Schmidt-Cassegrain f/10
reflector; mag 6.9 on Nov. 21.625) and 41m53s.59, 38".1 by K.
Kadota (Ageo, Japan, 0.25-m f/5.0 reflector; mag 7.0 on Nov.
21.701).  Kadota notes the presence of a star near this variable on
Digitized Sky Survey plates taken in 1980, 1992, and 1995, with a
USNO-A2.0 star having position end figures 41m53s.61, 39".1 (red
mag 17.7, blue mag 18.2).
     K. Ayani, Bisei Astronomical Observatory (BAO), reports that
low-dispersion spectra (range 463-690 nm; resolution 0.54 nm at
H_alpha) of the apparent nova, obtained on Nov. 21.75 at the BAO
1.01-m telescope, shows H_alpha and H_beta lines with P-Cyg
profiles.  Preliminary analysis of the H_alpha emission (without
decomposition of the absorption component) yields FWHM = 650 km/s
and equivalent width 0.6 nm, the minimum of the H_alpha P-Cyg
absorption being blueshifted by 860 km/s with respect to the
emission peak.  Absorption of Fe II (multiplet 42) lines are
clearly seen.

SUPERNOVAE 2004gd AND 2004ge
     Further to IAUC 8431, M. Moore, K. Shimasaki, and  W. Li
report the LOSS discovery of two apparent supernovae on unfiltered
KAIT images:

SN       2004 UT       R.A.  (2000.0)  Decl.    Mag.     Offset
2004gd   Nov.  6.45   7 09 11.71  +20 36 10.6   17.3   3".7 W, 0".8 N
2004ge   Nov. 17.46   6 50 00.13  +25 38 02.0   18.3   6".2 E, 1".4 S

Additional photometry:  SN 2004gd in NGC 2341, Oct. 22.46 UT, [19.5;
Nov. 14.44, 17.2; 17.45, 17.2; 20.44, 17.1.  SN 2004ge in UGC 3555,
Nov. 14.45 UT, [19.5; 20.44, 17.8.

                      (C) Copyright 2004 CBAT
2004 November 21               (8443)            Daniel W. E. Green

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