Central Bureau for Astronomical Telegrams
IAUC 8045: 2003E, 2003F, 2003G, 2003H
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Circular No. 8045
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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)
SUPERNOVAE 2003E, 2003F, 2003G, 2003H
Discoveries of three supernovae have been found on unfiltered
CCD images and reported to the Central Bureau. All three objects
were found by J. Graham and W. Li (via LOTOSS/KAIT; cf. IAUC 7906);
SN 2003F was found independently by T. Puckett, Mountain Town, GA,
with D. Toth (Lima, OH) via the Puckett Observatory 0.50-m
MassImaging reflector (confirmed Jan. 9.13; Puckett's data for SN
2003F tabulated below).
SN 2003 UT R.A. (2000.0) Decl. Mag. Offset
2003F Jan. 8.16 5 11 32.99 +17 03 28.4 16.7 7".3 E, 6".1 N
2003G Jan. 8.2 2 08 28.13 + 6 23 51.9 16.2 6".0 E, 9".8 N
2003H Jan. 8.3 6 16 25.68 -21 22 23.8 17.8 31".9 W, 9".6 N
The offsets of SN 2003H are relative to the eastern component of
the interacting galaxy pair. Li provides position end figures
33s.03, 28".4 for SN 2003F. Additional magnitudes [sources: 'K' =
KAIT; 'S' = Palomar Sky Survey; 'P' = Puckett; 'Q' = Y. L. Qiu,
Beijing Astronomical Observatory (via Li)]: SN 2003F in UGC 3261,
1953 Jan. 9, [20.0: (S, P); 1983 Sept. 9, [21.0: (S, P); 2002 Feb.
14, [20.5: (P); Dec. 11, [19.0 (K); 2003 Jan. 8.3, 16.3 (K); 9.6,
16.1 (Q). SN 2003G in IC 208, 2002 Dec. 12, [19.0 (K); 2003 Jan.
9.5, 15.8 (Q). SN 2003H in NGC 2207, Jan. 3, [19.0 (K); 9.6, 18.0
(Q).
M. Hamuy, Carnegie Observatories, reports that spectroscopic
observations (range 320-920 nm), made by J. Maza (University of
Chile) on Jan. 9.11 UT with the Las Campanas Observatory Baade
6.5-m telescope (+ Boller & Chivens spectrograph), show that SN
2003F is a type-Ia supernova, very similar to SN 1994D at 3 days
before maximum. The minimum of the Si II 635.5-nm line yields an
expansion velocity of 10400 km/s. The interstellar Na I D line is
present in absorption with an equivalent width of 0.16 nm, and this
suggests some reddening in the host galaxy. A spectrum of SN
2003G, from Jan. 9.05, has a blue continuum and a strong H-alpha
line in emission with an FWHM of 400 km/s, superposed on a broader
emission component, indicating that the supernova is of type IIn; a
narrow absorption is present in the blue wing of H-alpha, and the
spectrum bears strong resemblance to that of SN 1994W (Filippenko
1997, ARAA 35, 309).
Hamuy adds that a spectrum of SN 2003E (cf. IAUC 8044),
obtained as above on Jan. 9.15, shows it to be a type-II supernova
with a blue continuum and Balmer lines with prominent P-Cyg
profiles. The minimum of H-beta yields an expansion velocity of
8200 km/s.
(C) Copyright 2003 CBAT
2003 January 9 (8045) Daniel W. E. Green
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