Central Bureau for Astronomical Telegrams
IAUC 5440: 1992C; 1992B; 1991n
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Read IAUC 5441
Circular No. 5440
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
SUPERNOVA 1992C IN NGC 3367
H. Van Winckel, European Southern Observatory, reports his
discovery of a supernova on a blue plate taken Jan. 28.3 UT by G.
Pizarro with the 1.0-m Schmidt telescope at La Silla. The supernova
is located 27" east and 28" south of the nucleus of NGC 3367 (R.A. =
10h43m.9, Decl. = +14 01', equinox 1950.0), at the end of a spiral
arm. No star appears at this position on the Palomar B and R
surveys. Preliminary photometric measurements obtained by O. Hainaut
yield B = 16.5.
M. Della Valle, European Southern Observatory; and C. Waelkens,
Astronomical Institute of Leuven, communicate: "Preliminary inspection
of a CCD spectrogram (range 460-720 nm, resolution about 1.5
nm), obtained on Jan. 30.3 UT with the ESO/MPI 2.2-m telescope (+
EFOSC) at La Silla, confirms Van Winckel's object to be a supernova.
The spectrum is dominated by the emission of H-alpha centered at 657
nm coupled with a P-Cyg profile, indicating a type-II supernova.
The expansion velocity corresponding to the difference between the
rest wavelength in the galaxy's frame and the minimum of the
absorption is about 7000 km/s."
SUPERNOVA 1992B IN ANONYMOUS GALAXY
S. Benetti and F. Patat, Asiago Observatory, report that a
spectrogram (range 500-800 nm, resolution 2.0 nm) of SN 1992B was
obtained on Jan. 27.96 UT with the Cima Ekar 1.8-m telescope (+
Boller & Chivens spectrograph + CCD). The spectrum exhibits several
broad emission features (in particular at 559.5, 619.5, 651.5, and
689.5 nm), typical of type-Ia supernovae about 1 month after maximum.
The redshift of the parent galaxy (measured from H-alpha, [N
II] 658.4-nm, and [S II] 671.6- and 673.1-nm features) is found to
be 0.055.
PERIODIC COMET FAYE (1991n)
Total visual magnitude estimates (cf. IAUC 5407): 1991 Dec.
27.82 UT, 10.6 (J. Carvajal, Madrid, Spain, 0.30-m reflector); 1992
Jan. 1.74, 11.1 (H. Dahle, Oslo, Norway, 0.20-m reflector); 6.13,
10.9 (C. Spratt, Victoria, BC, 0.20-m reflector); 10.26, 11.6 (A.
Hale, Las Cruces, NM, 0.41-m reflector); 24.16, 11.9 (Hale).
1992 January 30 (5440) Daniel W. E. Green
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