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IAUC 7745: SNe

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                                                  Circular No. 7745
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)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVAE
     B. Barris, University of Hawaii, on behalf of the High-Z
Supernova Search Team (cf. IAUC 6160, 6646, 7312, 7516), reports
the discovery of several apparent supernovae on I-band images taken
with the Canada-France-Hawaii Telescope (+ 12K Mosaic in queue
mode); the supernovae were identified by subtracting images taken
on Sept. 11 from those taken Oct. 9, and confirmed on images taken
on Sept. 24.  Additional I-band confirmation images were obtained
by P. Challis, B. Barris, P. Capak, and E. Hu (Subaru telescope +
SUPRIME) on Oct. 16 and 22; by T. Hayward, K. Krisciunas, B.
Schommer, R. C. Smith, and N. Suntzeff (Gemini South telescope +
Acquisition Camera) on Oct. 20; and by A. Clocchiatti and R. C. Smith
(European Southern Observatory 8.2-m Melipal UT3 Very Large
Telescope + FORS1) on Oct. 21.  Spectral observations were made at
the VLT (Oct. 21), and also with the Keck II telescope (+ ESI) by A.
Herrero and P. Najarro (Oct. 19, 20) and by A. V. Filippenko and R.
Chornock (Oct. 22, 23).  In the table below, I_1, I_2, and I_3
indicate the I magnitudes on Oct. 9, 21, and 22, respectively.
Each apparent supernova is within 2" of its host galaxy's center.

SN          R.A.  (2000)  Decl.     I_1    I_2    I_3     z
2001fi    2 26 38.84  + 0 26 15.3   22.7          23.0   0.32
2001fj    2 27 03.88  + 0 23 52.6   23.2          23.3   0.22
2001fk    2 28 04.67  + 0 46 18.0   23.2          23.7    ?
2001fl    2 28 15.18  + 0 21 18.6   20.2          19.6   0.087
2001fm    2 28 24.23  + 0 43 54.0   23.9   24.4          0.801
2001fn    2 29 00.47  + 0 42 21.8   22.3          22.9   0.186
2001fo    4 37 41.45  - 1 29 33.1   24.0   22.7          0.772
2001fp    4 38 04.11  - 1 42 32.1   24.0          24.3   0.76
2001fq    4 38 04.49  - 1 23 48.9   24.3   24.1          0.76?
2001fr    4 38 50.06  - 1 22 33.3   23.4          22.5   0.18
2001fs    4 39 30.68  - 1 28 21.9   24.4   23.9          0.84
2001ft    4 39 32.22  - 1 22 47.8   25.1   24.9          1.3

SN 2001fk was present on the Sept. 11 images but was not present
on images taken in Oct./Nov. 1999 (cf. IAUC 7312).  The remaining
eleven apparent supernovae are invisible in the Sept. 11 images
(limiting mag I = 25.8).  SN 2001fl shows a type-IIn spectrum like
that of SN 1988Z.  SN 2001fs is a type-Ia supernova.

                      (C) Copyright 2001 CBAT
2001 November 5                (7745)            Daniel W. E. Green

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