Central Bureau for Astronomical Telegrams
IAUC 3749: SNe; CPD -48 1577; 1982e
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Read IAUC 3750
Circular No. 3749
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-864-5758
SUPERNOVAE
P. Wild, Astronomical Institute, Berne University, reports
his discovery of a supernova in an anonymous galaxy located at R.A. =
2h37m4, K = +32deg03' (equinox 1950.0). The offset from the nucleus
is 4" west, 16" north. On Nov. 22 the photographic magnitude was
15.2 (measured with respect to Selected Area 46). The discoverer
confirmed the supernova on Nov. 23.
R. W. Argyle and A. T. Sinclair, Royal Greenwich Observatory,
have accurately measured the position of the above supernova, as
well as of the one in NGC 1187 (cf. IAUC 3739), as follows:
R.A. (1950.0) Decl. Offset from nucleus
2 37 18.30 +32 03 08.6 3" west 14" north
3 00 25.89 -23 02 45.4 27" east 61" north
CPD -48 1577
H. Bohnhardt, H. Drechsel, J. Rahe and W. Wargau, Remeis
Observatory, Bamberg; G. Klare, O. Stahl and B. Wolf, Landessternwarte
Heidelberg-Konigstuhl; and J. Krautter, European Southern Observatory,
Garching, report that high- and low-dispersion spectra in the range
120-320 nm were obtained with IUE during Nov. 17.55-17.80 UT. The
fine-error-sensor (520 nm) mag was 9.5 +/- 0.1. As suspected by
Garrison et al. (IAUC 3730) from optical data, the star reveals a
spectrum characteristic of cataclysmic variables. The ultraviolet
spectra are similar to those of novalike objects or dwarf novae
during active stages. The continuum flux rises strongly toward
shorter wavelengths, exhibiting the minor amount of reddening of
E(B-V) = 0.02. Broad and asymmetric absorption features with high
ionization level are present, e.g., N V, Si III, Si IV, He II, Al III
and Fe III. C IV (155 nm) has a P-Cyg profile, with a terminal
velocity of ~ 2000 km/s. If CPD -48 1577 proves to be a novalike
object or dwarf nova, it is the brightest known object of its class.
PERIODIC COMET D'ARREST (1982e)
Total visual magnitude estimates: Nov. 6.99 UT, 9.8 (J.
Bortle, Stormville, NY, 0.32-m reflector); 8.00, 9.9 (C. S.
Morris, Harvard, MA, 0.25-m reflector); 15.98, 10.: (Bortle).
1982 November 29 (3749) Brian G. Marsden
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