Central Bureau for Astronomical Telegrams
IAUC 8158: 2003gg; NO N IN NGC 6822; Var STAR NEAR UGC 10700; 2003ds, 2003ev,, 2003fd; 2003gd
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Circular No. 8158
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2003gg IN IC 1321
Further to IAUC 8156, M. Moore, M. Papenkova, and W. Li report
the LOTOSS discovery of an apparent supernova (mag about 18.5) on
unfiltered KAIT images on June 27.4 and 28.4 UT. SN 2003gg is
located at R.A. = 20h28m10s.68, Decl. = -18o17'32".4 (equinox
2000.0), which is 5".8 west and 2".9 south of the nucleus of IC
1321. A KAIT image taken on 2002 July 9.4 showed nothing at this
position (limiting mag about 19.0). A. V. Filippenko and R.
Chornock, University of California, Berkeley, report that
inspection of CCD spectra (range 320-900 nm) obtained on June 29
with the Keck-I telescope (+ LRIS) reveals that SN 2003gg is of
type II, probably 1-2 months after the explosion. Hydrogen Balmer
lines, Na D, and Fe II lines exhibit well-developed P-Cyg profiles.
NO NOVA IN NGC 6822
Filippenko and Chornock report that inspection of CCD spectra
(range 320-990 nm), obtained as above on June 29 UT, reveals that
the apparent nova in NGC 6822 (cf. IAUC 8141) is actually a very
late M-type star in that galaxy. Strong TiO bands are present, as
is narrow H-alpha emission. Such stars are known to sometimes be
highly variable, such as Mira variables.
VARIABLE STAR NEAR UGC 10700
Filippenko and Chornock also note that CCD spectra show that
the suspected variable star near UGC 10700 (cf. IAUC 8153) is
indeed a Galactic cataclysmic variable. Strong, narrow, double-
peaked (separation about 500 km/s) hydrogen Balmer emission lines
are present. He I and the Ca II near-infrared triplet emission are
visible, as well.
SUPERNOVAE 2003ds, 2003ev, AND 2003fd
Filippenko and Chornock add that inspection of CCD spectra,
obtained as above on June 29 UT with the Keck-I telescope, reveals
that SN 2003fd (IAUC 8147) is of type Ia, perhaps 2 weeks past
maximum brightness. SN 2003ev (IAUC 8140) is indeed of type Ic, as
suspected by Hamuy and Phillips (IAUC 8142). SN 2003ds (IAUC 8120,
8129) is also of type Ic.
SUPERNOVA 2003gd IN M74
Prediscovery unfiltered-CCD magnitude reported by A. Klotz,
Guitalens, France: June 11.12 UT, V = 13.65 +/- 0.3.
(C) Copyright 2003 CBAT
2003 June 29 (8158) Daniel W. E. Green
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