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IAUC 3739: SN IN NGC 1187; 1E 2259+586; (9); AM Her

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                                                  Circular No. 3739
Central Bureau for Astronomical Telegrams
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

     A. Muller and O. Pizarro, European Southern Observatory, report
their discovery on Oct. 24 of a supernova 25" east and 61"
north of the nucleus of NGC 1187 (R.A. = 3h00m4, Decl. = -23deg04',
equinox 1950.0).  Preliminary reduction of photometry by B. Westerlund
in the Cousins system gives V = 14.4, B - V ~ +0.4, U - B ~ +0.25.
Low-dispersion blue spectra by M. Dennefeld show broad emission
bands around 370, 395 and 460 nm and weaker ones around 430 and
490 nm, indicating that the supernova is of type I and ~ 20 days
after maximum.

1E 2259+586
     B. Margon and S. F. Anderson, University of Washington, write
that digital images of the field of the x-ray pulsar 1E 2259+586
(IAUC 3701), obtained in the R band with the Kitt Peak 4-m reflector,
show a stellar object 3".5 east and 2".0 south of star A of
Fahlman et al. (1982, Ap. J. 261, L1).  Athough not prominent on
those authors' B image, it is only 1.5 +/- 0.2 mag fainter than A in
the R band and thus probably should be considered a candidate for
the optical counterpart of the pulsar, as the optical pulsation
data of Fahlman et al. were obtained in the red and infrared.  A
narrowband H-alpha image also shows a faint stellar source of H-alpha
emission 5" south of the new candidate discussed here, but it is
apparently outside the x-ray error box.

     B. Jones, Lick Observatory, informs us that direct visual
observations by E. A. Harlan show no evidence that this minor planet
possesses a satellite.  Observations were made with the Lick 1.0-m
reflector and 0.9-m refractor on several nights during Sept. 21-
Oct. 1, on three occasions in excellent seeing allowing powers of
up to 780 times.  On the other hand, the pair ADS 968, postulated
as being comparably resolvable (Sinnott 1982, Sky Tel. 64, 184),
was clearly detected as double.

     Visual magnitude estimates by M. Verdenet, Bourbon-Lancy,
France: Aug. 25, 13.3; Sept. 1, 13.3; 6, 13.4; 11, 13.3.

1982 October 26                (3739)              Brian G. Marsden

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