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IAUC 6596: SNe

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                                                 Circular No. 6596
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)
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Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVAE
     The Supernova Cosmology Project [cf. IAUC 6540, plus N. Walton
and P. Ruiz-Lapuente at the Isaac Newton Telescope (INT)] reports
sixteen supernovae found with the Cerro Tololo (CTIO) 4-m telescope
in their High Redshift Supernova Search, as given below.

SN       1997 UT       R.A. (2000) Decl.       R      z     type
1997ac   Feb. 10    8h24m05.21  + 4 11'22.6   23.1   0.32    Ia
1997ad   Mar.  5    8 22 32.64  + 4 09 57.7   22.8            ?
1997ae   Mar.  5    8 23 58.68  + 3 47 53.9   23.9            ?
1997af   Mar.  5    8 23 52.67  + 4 08 44.0   22.3   0.58    Ia
1997ag   Mar.  5    9 58 53.35  - 0 20 29.0   23.2   0.59    Ia
1997ah   Mar.  5   10 00 02.92  - 0 23 30.7   23.6   0.73    Ia?
1997ai   Mar.  5   10 48 57.61  + 0 31 50.0   22.3   0.45*   Ia
1997aj   Mar.  5   10 55 52.98  - 3 59 02.3   23.8   0.58    Ia
1997ak   Mar.  5   10 56 53.15  - 4 13 50.9   24.4   0.35    Ia?
1997al   Mar.  5   10 57 30.31  - 3 14 49.7   24.0   0.62    Ia
1997am   Mar.  5   10 57 31.52  - 3 13 48.3   22.9   0.42    Ia
1997an   Mar.  5   10 57 43.97  - 3 47 18.2   24.3   0.49     ?
1997ao   Mar.  5   13 47 05.42  + 2 08 59.5   24.3            ?
1997ap   Mar.  5   13 47 09.90  + 2 23 57.5   24.2   0.83*   Ia
1997aq   Mar.  5   13 47 09.90  + 2 27 37.2   24.3   0.51     ?
1997ar   Mar.  5   13 47 31.98  + 2 26 16.0   23.0   0.36     ?

The supernovae were all discovered before or at maximum light; they
were re-observed on Mar. 9-14 at CTIO, WIYN, and INT, and the
supernova spectra were obtained at Mauna Kea (Keck telescope) on
Mar. 13-14, except for those with no redshift indicated.  The
redshifts were determined from host-galaxy emission and absorption
lines, except for those marked with an asterisk, which were
determined solely from the spectra of the supernovae.  The
supernovae are all within 2".5 of the host-galaxy center, except
for SN 1997ap (which has no detected host).  Photometry is being
followed in R and I for the twelve supernovae at z > 0.35, and in
V, R, and I for SN 1997ac; finding charts are available from
saul@LBL.gov.
     Corrigendum.  On IAUC 6540, line -1, for  supervovae  read
supernovae

                      (C) Copyright 1997 CBAT
1997 March 20                  (6596)            Daniel W. E. Green

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