Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 5971: 1994J; 1994I; OJ 287

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 5970  SEARCH Read IAUC 5972

View IAUC 5971 in .dvi or .ps format.
IAUC number

                                                  Circular No. 5971
Central Bureau for Astronomical Telegrams
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

     C. Pollas, Observatoire de la Cote d'Azur, reports his discovery
of a supernova of mag 19 on Technical Pan films taken with the OCA
0.9-m Schmidt telescope on Mar. 5.97 and 8.91 UT by D. Albanese and
himself.  The supernova is located at R.A. = 9h58m15s.82, Decl. =
+54o49'24".0 (equinox 1950.0), which is 2".7 east and 3".4 south of
the center of a spiral galaxy of mag 17.  Nothing appears on a
similar film obtained on 1994 Jan. 18.1 to limiting mag 22.  A nearby
star of mag about 18 is at (end figures) 10s.52, 48'45".7.  A. V.
Filippenko, A. J. Barth, and T. Matheson, University of California
at Berkeley, report that fully calibrated CCD spectra (range 425-702
nm) obtained on Apr. 4 UT with the Shane 3-m reflector at Lick
Observatory confirm that this object is a supernova, but the spectral
type is uncertain due to the low S/N ratio.  The redshift of the
parent galaxy is 0.056, based on measurements of several emission lines.

     M. Turatto and C. Zanin, Padova, communicate:  "We observed SN
1994I on Apr. 9.0 UT with the Cima Ekar 1.8-m telescope (+ Boller &
Chivens spectrograph + CCD) under poor weather conditions.  The
preliminary reduction of the spectrogram (range 350-800 nm, resolution
2 nm) shows a number of broad emissions at 367, 393, 460, 488, 535,
592, and 650 nm and absorptions at 374, 437, 478, 498, 570, and 619
nm.  The spectrum shows interesting resemblance to some peculiar
type-Ia supernovae shortly before maximum.  In particular, the
spectrum of SN 1994I blueward of 480 nm closely matches those of
SNe 1986G and 1991bg.  The absorption at 619 nm may be due to Si II.
However, between 500 and 600 nm, the observed spectrum is dominated
by a very broad emission feature and differs from those of SNe
1986G and 1991bg."

OJ 287
     H. Meusinger, Thuringer Landessternwarte, Tautenburg, reports
the following photographic B magnitudes of OJ 287 (cf. IAUC 5909)
from Tautenburg Schmidt plates (emulsion ORWO ZU, filter GG 13):
Feb. 14.9 UT, 16.1; Mar. 10.9, 16.0; Apr. 5.8, 15.2.

1994 April 9                   (5971)            Daniel W. E. Green

Read IAUC 5970  SEARCH Read IAUC 5972

View IAUC 5971 in .dvi or .ps format.

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

Valid HTML 4.01!