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IAUC 6317: 1996C; 1996D

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                                                  Circular No. 6317
Central Bureau for Astronomical Telegrams
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVA 1996C IN MCG +8-25-47
     J. Mueller reports her discovery of a supernova (mag about 18)
on a IV-N plate taken on Feb. 15 UT by K. M. Rykoski and herself
with the 1.2-m Oschin Schmidt telescope in the course of the second
Palomar Sky Survey.  SN 1996C is located 14" north of the center of
MCG +08-25-047 (R.A. = 13h50m.8, Decl. = +49o20'; equinox 2000.0).
No object appears at this position on original Palomar Sky Survey
prints or on second Sky Survey transparencies.
     P. Garnavich, A. Riess, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics, report that an image obtained by J. Luu
with the Mt. Hopkins 1.2-m telescope on Feb. 17.5 UT shows the
supernova at V about 16.  At about this same time, D. Koranyi
obtained a spectrogram with the 1.5-m Tillinghast telescope,
showing SN 1996C to be a type-Ia supernova near maximum.  A weak H-
alpha emission line superimposed on the spectrum has a redshift of

     L. Drissen, C. Robert, Y. Dutil, and J.-R. Roy, Departement
de Physique, Universite Laval, report the discovery of a supernova
on an image and spectrogram obtained at the Canada-France-Hawaii
telescope on Feb. 9.  A preliminary inspection of the partially-
calibrated data by A. V. Filippenko (University of California at
Berkeley) suggested that this might be a type-Ic supernova.  SN
1996D is located in a spiral arm, about 6".6 east of the bright
nucleus of NGC 1614 (R.A. = 4h34m.0, Decl. = -8o35', equinox
2000.0).  This new source is not visible in previous images, the
latest known being a Hubble Space Telescope WFPC2 image (F606W)
collected on 1994 Dec. 11.
     E. Cappellaro, Osservatorio Astronomico di Padova; and F.
Patat, European Southern Observatory (ESO) report:  "On Feb. 18.0
UT, we observed SN 1996D with the 2.2-m ESO telescope (+ EFOSC2).
Based on a low-resolution (3.5 nm) spectrum (range 380-900 nm), we
confirm that this is indeed a type-Ic supernova near maximum light.
The most prominent features are O I at 777.3 nm and the Ca II
infrared triplet, both showing a P-Cyg profile and indicating an
expansion velocity of about 8000 km/s.  The recession velocity
derived from the narrow H-alpha and S II emissions of the
underlying H II region is 4750 km/s.  Preliminary photometry gives
V = 18.2, V-R = +0.7."

                      (C) Copyright 1996 CBAT
1996 February 18               (6317)            Daniel W. E. Green

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