Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 3722: SNe IN Anon GALAXIES; 1982g

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).


Read IAUC 3721  SEARCH Read IAUC 3723
IAUC number


                                                  Circular No. 3722
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 IN ANONYMOUS GALAXIES
     J. Maza, Department of Astronomy, University of Chile, telexes
the discovery by L. E. Gonzalez at the Cerro el Roble station of a
supernova 2" west and 7" north of the nucleus of a faint, anonymous
galaxy located at R.A. = 0h04m.3, Decl. = -41o42' (equinox 1950.0).  On
plates taken by Gonzalez on July 21 and Aug. 17, the object was at
photographic magnitudes 19.8 and 20, respectively.
     Maza also reports the discovery by N. Wischnjewsky of a possible
supernova on another plate taken by Gonzalez.  The object is located
16" east and 18" north of the nucleus of a faint, anonymous galaxy
at R.A. = 21h11m.0, Decl. = -66o08' (equinox 1950.0), and was at
photographic magnitude 17.0 on Aug. 18.


COMET AUSTIN (1982g)
     I. Coulson, South African Astronomical Observatory, sends his
observations of this comet with the 1.02-m reflector at Sutherland:
July 25.19 UT, aperture diameter 60": V = 7.97, B-V = +0.80, U-B =
-0.47; diameter 31": V = 9.13, B-V = +0.71, U-B = -0.39, V-R =
-0.53, V-I = -0.62; diameter 16": V = 10.24, B-V = +0.62, U-B =
-0.38.  July 27.19, diameter 60": V = 7.77, B-V = +0.75, U-B =
-0.46; diameter 31": V = 8.94, B-V = +0.68, U-B = -0.42; diameter
16": V = 10.08, B-V = +0.61, U-B = -0.41.  Measures are +/- 0.01 mag.
     C. W. McCracken and L. W. Brown, Goddard Space Flight Center,
communicate that spectrograms obtained on Aug. 19.06 UT show emission
by CN, CH, C3, C2 and [O I].  A weak continuum is present in the
innermost part of the coma.  No CO+ appears but may have been
missed with the east-west slit orientation used.  Exposures of 5
and 20 min (dispersion 1.5 x 10**-6) were obtained with the Goddard
0.91-m telescope and Cassegrain spectrograph equipped with an image
intensifier.  The coma was diffuse and showed no asymmetry as
viewed in a 0.15-m finder and on the slit-jaws of the spectrograph.
     Selected total visual magnitude, coma diameter and tail-length
estimates: Aug. 7.32 UT, 5.4, -, - (V. F. de Assis Neto, Sao Francisco
de Oliveira, Brazil, 0.1-m reflector); 19.04, 4.9, 4', 2.0 deg in
p.a. 31 (C. S. Morris, Harvard, MA, 20x80 binoculars); 20.07.
4.7, 7'.0, - (J. E. Bortle, Stormville, NY, 10x50 binoculars);
21.04, 4.8, 4', 1.17 deg in p.a. 33 (Morris); 22.06, 4.9, 6'.5, > 5.25 deg
in p.a. 37 (Bortle; tail length from 0.2-m Schmidt photograph);
26.07, 5.3, 6'.5, 5 deg in p.a. 34 (Morris; tail from 12x50 binos.).


1982 August 26                 (3722)              Daniel W. E. Green

Read IAUC 3721  SEARCH Read IAUC 3723


Our Web policy. Index to the CBAT/MPC/ICQ pages.


Valid HTML 4.01!