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IAUC 7643: 2001cn; 2001co; 2001cl

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IAUC number

                                                  Circular No. 7643
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVA 2001cn IN IC 4758
     R. Chassagne, Ste. Clotilde, Ile de Reunion, reports the
discovery of an apparent supernova (mag about 14.8) on unfiltered
CCD images taken on June 11.95 and 12.85 UT with a 0.30-m
reflector.  SN 2001cn is located at R.A. = 18h46m17s.84, Decl. =
-65o45'41".8 (equinox 2000.0), which is 2".6 west and 17".9 south
of the nucleus of IC 4758.  The new object does not appear on a
Digital Sky Survey image (U.K. Schmidt 1.2-m telescope) taken on
1976 May 4.75 (limiting mag about 21.0).  R. Santallo, Faaa,
Tahiti, French Polynesia, reports a confirmation of SN 2001cn at
mag about 14.8 on unfiltered CCD images taken on June 13.531 with a
0.2-m reflector, and he provides the following position end
figures:  17s.88, 41".8 (or 1".8 west and 17".4 of the galaxy

SUPERNOVA 2001co IN NGC 5559
     A. B. Aazami and W. D. Li, University of California at
Berkeley, report the discovery by LOTOSS (cf. IAUC 7514) of an
apparent supernova (mag about 18.5) in unfiltered images taken with
the Katzman Automatic Imaging Telescope (KAIT) on June 11.3, 12.3,
and 13.3 UT.  The new object is located at R.A. = 14h19m11s.80,
Decl. = +24o47'42".9 (equinox 2000.0), which is 13".5 west and
12".6 south of the nucleus of NGC 5559.  A KAIT image taken on May
24.3 showed nothing at this position (limiting mag about 19.0).

SUPERNOVA 2001cl IN NGC 7260
     S. Benetti, G. Altavilla, E. Cappellaro, A. Pastorello, and M.
Turatto, Osservatorio Astronomico di Padova; and J. Pritchard,
European Southern Observatory (ESO), write:  "A fully reduced CCD
spectrum (range 330-920 nm, resolution 1.0 nm) of SN 2001cl (cf.
IAUC 7641), obtained on June 12.32 UT with the Danish 1.54-m
telescope (+ DFOSC) at ESO, is that of a type-II supernova, 3-4
weeks after maximum light.  The spectrum shows a broad H-alpha
emission with a shallow P-Cyg absorption having a minimum measured
at 651 nm.  Adopting the NASA/IPAC Extragalactic Database recession
velocity for NGC 7260 of 4901 km/s, this indicates an expansion
velocity of about 6500 km/s.  Other strong absorption features are
measured at 578 (Na I D + He I); 518 and 503 (Fe II); and 485 nm

                      (C) Copyright 2001 CBAT
2001 June 13                   (7643)            Daniel W. E. Green

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