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IAUC 6646: SNe; 1997bq

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                                                 Circular No. 6646
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/cfa/ps/cbat.html
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVAE
     The High-Z Supernova Search Team (cf. IAUC 6160, plus J.
Tonry, University of Hawaii; A. V. Filippenko, University of
California, Berkeley; R. Gilliland, Space Telescope Science
Institute; and D. Reiss and A. Diercks, University of Washington)
reports the discovery of eleven supernovae on CCD images taken at
the Canada-France-Hawaii Telescope (CFHT) by P. Garnavich and J.
Jensen.  The supernovae were identified by B. Schmidt and J. Tonry
by comparing images taken on Apr. 29 and 30 UT with those obtained
on Apr. 4 and 5.

SN        1997 UT       R.A.  (2000)  Decl.      I      z    type
1997ca    Apr. 29    14 16 40.24  +52 31 59.2   22.6   0.52   Ia
1997cb    Apr. 29    14 17 55.41  +52 19 00.6   23.7   0.28   II?
1997cc    Apr. 29    14 16 33.59  +52 23 37.7   23.5
1997cd    Apr. 29    17 06 17.07  +44 04 34.0   22.9   0.51   Ia
1997ce    Apr. 29    17 07 48.26  +44 01 26.2   23.3   0.44   Ia
1997cf    Apr. 29    17 06 43.08  +43 54 14.0   23.7
1997cg    Apr. 29    17 06 46.96  +43 49 14.1   23.5    ?      ?
1997ch    Apr. 29    12 37 28.92  +62 06 42.8   23.5
1997ci    Apr. 29    12 37 13.41  +62 05 20.5   23.5
1997cj    Apr. 29    12 37 04.27  +62 26 24.9   22.8   0.50   Ia
1997ck    Apr. 29    16 53 00.27  +35 03 46.4   24     0.97    ?

The supernovae are within 3" of their host galaxies, except SN
1997ca, which has no detectable host.  For the supernovae with
indicated redshift and type, spectra were obtained with the
Multiple-Mirror Telescope on May 2-3 by P. Challis (reductions by
B. Leibundgut) and with the Keck telescope on May 3-4 by B. Schmidt,
E. Hu, and L. Cowie.  SNe 1997cc and 1997ch have very blue V-I
colors and may be type-II supernovae.  With z about 1, SN 1997ck is
the most distant supernova yet observed.  Finder charts may be
requested by sending electronic mail to pgarnavich@cfa.harvard.edu.


SUPERNOVA 1997bq IN NGC 3147
     Magnitude estimates:  May 2.8 UT, 15.1 (S. Pesci, Milan,
Italy, visual); 2.93, 15.0 (K. Sarneczky and L. Kiss, Szeged,
Hungary, unfiltered CCD).

                      (C) Copyright 1997 CBAT
1997 May 8                     (6646)            Daniel W. E. Green

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