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IAUC 6804: SNe; 104P

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                                                 Circular No. 6804
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVAE
     P. Nugent, Lawrence Berkeley National Laboratory (LBNL), on
behalf of the Supernova Cosmology Project [cf. IAUC 6596, plus G.
Aldering, P. Castro, N. Nunes, and R. Quimby (LBNL)], reports the
discovery of seventeen supernovae, all discovered near maximum
light and found with the Cerro Tololo 4-m telescope in their High
Redshift Supernova Search:

SN       1997 UT       R.A.  (2000)  Decl.       R      z    type
1997ek   Dec. 28    4 56 11.63   - 3 41 26.0    23.8   0.86   Ia
1997el   Dec. 28    4 56 41.21   - 3 27 54.7    23.1   0.64   Ia
1997em   Dec. 28    4 56 50.44   - 3 51 37.1    23.6   0.46   Ia
1997en   Dec. 28    4 56 57.21   - 4 11 46.0    24.4   0.77   Ia?
1997eo   Dec. 28    4 57 32.35   - 3 30 06.2    24.5   0.70   Ia?
1997ep   Dec. 28    4 57 48.59   - 3 42 44.7    22.4   0.46   Ia
1997eq   Dec. 28    4 58 56.32   - 3 59 29.4    22.5   0.54   Ia
1997er   Dec. 28    5 00 38.56   - 3 59 32.2    22.3   0.47   Ia
1997es   Dec. 28    8 18 40.65   + 3 13 36.5    24.3   0.65   Ia?
1997et   Dec. 28    8 22 53.73   + 3 52 14.7    23.2   0.63   Ia
1997eu   Dec. 28    8 23 00.45   + 4 08 27.3    22.4   0.59   Ia
1997ev   Dec. 28    8 24 20.28   + 3 51 36.0    23.0   0.43   II?
1997ew   Dec. 28    8 24 25.09   + 3 49 08.0    23.9   0.59   II/Ic?
1997ex   Dec. 28    8 24 27.87   + 3 52 05.8    21.6   0.36   Ia
1997ey   Dec. 29    4 56 58.19   - 2 37 36.7    22.9   0.58   Ia
1997ez   Dec. 29    8 21 38.13   + 3 25 10.5    23.4   0.78   Ia
1997fa   Dec. 29    8 22 03.72   + 3 24 24.9    22.5   0.50   Ia

The supernova spectra were obtained at Mauna Kea (Keck telescope)
on 1997 Dec. 31, 1998 Jan. 1, and 2.  The redshifts were determined
from host-galaxy emission and absorption lines, and all the
supernovae were found to be within 2".5 of the host-galaxy center.
R- and I-band photometry of the lightcurves are being obtained for
all supernovae from groundbased telescopes, while R-, I- and J-band
photometry for SNe 1997ek, 1997es, 1997ep, and 1997ez are being
obtained with the Hubble Space Telescope; finding charts are
available from saul@lbl.gov.


COMET 104P/KOWAL 2
     Visual m_1 estimates by M. Lehky, Hradec Kralove, Czech
Republic (0.42-m reflector):  1997 Oct. 19.78 UT, 14.3; Nov. 1.83,
13.9; 20.75, 14.1; Dec. 16.74, 13.8; 21.74, 13.9; 30.75, 13.6;
31.73, 13.7; 1998 Jan. 1.74, 13.5.

                      (C) Copyright 1998 CBAT
1998 January 6                 (6804)            Daniel W. E. Green

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