IAU Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 5974: 1994f; 1994J; GRO J0422+32

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 5973  SEARCH Read IAUC 5975

View IAUC 5974 in .dvi or .ps format.
IAUC number


                                                  Circular No. 5974
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@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


COMET TAKAMIZAWA-LEVY (1994f)
     Kesao Takamizawa and David H. Levy report their discoveries of
what appears to be the same comet, as follows:

     1994 UT            R.A. (2000) Decl.        m1      Observer
     Apr. 14.756      21 24.0      + 4 48       12.5     Takamizawa
          15.4        21 23.0      + 5 45       10.5     Levy

K. Takamizawa (Saku-cho, Minami-Saku-gun, Nagano-ken, Japan).  Two
  4-min photographic films, 0.10-m f/4.0 camera.  Comet is diffuse
  with central condensation and coma diameter about 1'.
  Communicated by S. Nakano.
D. H. Levy (Tucson, AZ).  Visual observation with 0.41-m reflector.
  Comet diffuse with slight condensation and a broad, faint,
  fanshaped tail.  Motion toward northwest at about 0.3 deg/day.


SUPERNOVA 1994J IN ANONYMOUS GALAXY
     B. Schmidt and R. Kirshner, Harvard-Smithsonian Center for
Astrophysics (CfA), report that a spectrum (320-900 nm) taken by J.
Huchra (CfA) with the Multiple Mirror Telescope (+ Blue Channel) on
Apr. 12 UT shows this object to be of type Ia, about 3 months past
maximum light.  The redshift of the host galaxy, derived from Ca
H+K absorption and H-alpha emission, is cz about 0.06, in fair
agreement with that reported by Filippenko et al. (IAUC 5971).


GRO J0422+32
     C. Chevalier and S. A. Ilovaisky, Observatoire de Haute-
Provence, write:  "CCD photometry of the optical counterpart of
this x-ray transient has been obtained with the 1.2-m OHP telescope
in the quiescent state during two runs: Feb. 1-9 and Mar. 3-10,
mostly in the Ic and Rc bands.  Variance analysis of this new set
shows power at a period of 5.09 hr (consistent with the value
previously derived from our 1993 data; see IAUC 5692) and also at
one-half, one-third, and even one-fourth of this value.  Folding
the data reveals a complex and variable light curve which is far
from being of an ellipsoidal type.  The maximum full amplitude is
0.2 mag, but it varies from night to night.  The mean V magnitude
for both runs was 20.66 and 20.56, respectively, with V-Ic = +1.83
in February."


1994 April 15                  (5974)            Daniel W. E. Green

Read IAUC 5973  SEARCH Read IAUC 5975

View IAUC 5974 in .dvi or .ps format.


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


Valid HTML 4.01!