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IAUC 8150: 2003gc; 2003gd; 2002lg

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                                                  Circular No. 8150
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVA 2003gc
     Further to IAUC 8149, W. M. Wood-Vasey, G. Aldering, and P.
Nugent report the discovery of an apparent supernova (mag 18.0) on
unfiltered NEAT images taken on Mar. 27.14-27.18 UT.  The new
object is located at R.A. = 10h54m22s.26, Decl. = -6 15'48".9
(equinox 2000.0), which is 1".0 west and 0".4 north of the center
of the host galaxy.  Additional NEAT magnitudes:  2002 Apr. 8.15,
[20.7; May 11.19, [20.6; 2003 Feb. 23.53, 17.2; Mar. 28.13, 17.9;
Apr. 1.24, 18.0; May 6.24, 19.0.


SUPERNOVA 2003gd IN M74
     R. Evans, Hazelbrook, N.S.W., reports his visual discovery
with a 0.31-m reflector of an apparent supernova (mag about 13.2)
on June 12.82 UT, located on top of the southern spiral arm of the
galaxy, 20" east and 150" south of the center of M74 = NGC 628.  R.
H. McNaught, Australian National University, reports confirmation
of the new object (red mag 13.9) on images taken on June 13.84 with
the 1.0-m telescope at Siding Spring Observatory, with a precise
position measured as R.A. = 1h36m42s.65, Decl. = +15o44'20".9
(equinox 2000.0; poor fit with about 50 USNO-A2.0 stars;
uncertainties +/- 0".6 in R.A., +/- 0".3 in Decl.), which is 13".2
east and 161" south of the center of M74.  A foreground star of red
mag 12.4 has position end figures 32s.00, 45'08".7.  McNaught adds
that SN 2003gd is absent from Digitized Sky Survey images.
     P. Garnavich, University of Notre Dame; and E. Bass, Cornell
University, obtained near-infrared spectra (range 850-2400 nm) of
SN 2003gd in twilight on June 13.46 UT with the 1.8-m Vatican
Advanced Technology Telescope (+ CorMASS spectrograph; low-
dispersion echelle design).  Preliminary reduction of the J-band
order shows strong, broad emission of Paschen_beta and
Paschen_gamma, which confirms that this is a supernova and
indicates it to be a type-II event.


SUPERNOVA 2002lg
     Further to IAUC 8141, L.-G. Strolger et al. also report an
apparent supernova (z = 23.4) from ACS z-band images of the
'Chandra Deep Field South' taken on 2002 July 4.2 UT.  SN 2002lg
was located at R.A. = 3h32m35s.76, Decl. = -27o47'58".8 (equinox
2000.0), which is 0".13 east and 0".10 south of the center of its
apparent host galaxy.  Additional z magnitudes for SN 2002lg:  2002
Aug. 2.9, 26.0; Sept. 19.8, [26.5.

                      (C) Copyright 2003 CBAT
2003 June 13                   (8150)            Daniel W. E. Green

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