Central Bureau for Astronomical Telegrams
IAUC 8048: 2003J, 2003K, 2003L, 2003M
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Circular No. 8048
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2003J, 2003K, 2003L, 2003M
Discoveries of four apparent supernovae have been reported
from unfiltered CCD images: SN 2003J in NGC 4157 by R. Kushida
(cf. IAUC 7890; via S. Nakano) and by T. Puckett and J. Newton (cf.
IAUC 8043); SN 2003K in IC 1129 by Puckett and A. Langoussis
(0.50-m reflector); SN 2003L in NGC 3506 by T. Boles (cf. IAUC
8030) and by M. Schwartz, B. Swift, and W. Li of LOTOSS (cf. IAUC
7906); and SN 2003M in UGC 7224 also by Swift and Li. The
tabulated data below for SNe 2003J and 2003L are from Puckett and
Boles, respectively.
SN 2003 UT R.A. (2000.0) Decl. Mag. Offset
2003J Jan. 11.32 12 10 57.72 +50 28 31.8 16.7 65".5 W, 32".1 S
2003K Jan. 11.32 15 32 01.91 +68 14 35.9 15.4 6".1 E, 10".1 S
2003L Jan. 12.15 11 03 12.33 +11 04 38.3 16.9 9".0 W, 1".5 N
2003M Jan. 13.5 12 13 21.00 +21 38 48.4 17.3: 38".2 E, 44".1 N
Additional magnitude estimates, unfiltered CCD data except for the
Sky Survey [B = Boles; K = Kushida; L = KAIT/LOTOSS; O = T.
Kobayashi, Oizumi, Gunma, Japan, 0.41-m reflector (also via Nakano);
P = Puckett; S = Palomar Sky Survey; and T = Tenagra II/LOTOSS]:
SN 2003J, 1995 Apr. 4, [21.0: (S, P); 2001 June 24, [20.5: (P);
2002 May 25, [18: (K); 2003 Jan. 11.857 UT, 16.3 (K); 12.66, 16.3
(K). SN 2003K, 1991 May 17, [21.0: (S, P); 2002 Aug. 4, [20.2: (P).
SN 2003L, 2002 Apr. 4, [19.0 (B); Nov. 4, [18.5 (B); Nov. 14.5,
[19.5: (T); 2003 Jan. 6.700, 17.3 (O); 13.49, 16.0: (T); 13.55,
16.0: (L). SN 2003M, 2002 May 14.3, [19.0: (L); Dec. 23.5, 18.5:
(L). Position end figures for SN 2003J from Kushida's image
(measured by Y. Koshida): 57s.52, 32".7. Puckett adds that both
SN 2003J and SN 2003K were confirmed on CCD frames taken on Jan.
12.15. LOTOSS position end figures for SN 2003L: 12s.32, 38".0.
K. Ayani, Bisei Astronomical Observatory (BAO); and T.
Hashimoto and H. Yamaoka, Kyushu University, write that
preliminary reduction of a low-resolution spectrum (range 400-800
nm) of SN 2003J, obtained with the BAO 1.01-m telescope on Jan.
12.8 UT, shows prominent H-alpha emission (FWHM about 10000 km/s)
with a P-Cyg profile, suggesting that it is a normal type-II
supernova. Ayani and Yamaoka add that another low-resolution
spectrum (obtained as above) of SN 2003K indicates that it is a
type-Ia supernova several days before maximum light; adopting the
NASA/IPAC Extragalactic Database recession velocity of 6540 km/s,
the expansion velocity deduced from Si II (rest 635.5 nm) is about
12100 km/s.
(C) Copyright 2003 CBAT
2003 January 15 (8048) Daniel W. E. Green
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