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IAUC 6386: 1995N; C/1995 O1

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                                                  Circular No. 6386
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVA 1995N IN MCG -2-38-017
     S. D. Van Dyk, University of California at Berkeley; R. A.
Sramek, National Radio Astronomy Observatory (NRAO); K. W. Weiler
and M. J. Montes, Naval Research Laboratory; and N. Panagia, ESA/
Space Telescope Science Institute, report: "New observations of the
peculiar type-II supernova 1995N, made on 1995 June 16.19 UT with
the NRAO's Very Large Array, show detection at wavelength 3.6 cm
(8.4 GHz) of a source with a flux density of 3.90 +/- 0.21 mJy at
R.A. = 14h49m28s.313, Decl. = -10o10'13".92 (equinox J2000,0; +/-
0".2 in each coordinate).  This is coincident to within 1" with an
optical position for SN 1995N (position end figures 28s.29, 13".7)
measured by Van Dyk from an optical R-band image made on 1995 May
23 at the Lick Observatory 1.0-m telescope; note a slight
discrepancy with the optical position reported on IAUC 6170
(position end figures 28s.27, 15".4).  The source was again
detected at this wavelength on 1995 Sept. 15.96 with a flux density
of 3.98 +/- 0.22 mJy.  If SN 1995N behaves as the peculiar type-II
SNe 1988Z (Van Dyk et al. 1993, Ap.J. 419, L69) and 1986J (Weiler
et al. 1990, Ap.J. 364, 611), we expect the flux density to
increase slowly at centimeter wavelengths and eventually reach
about 20 mJy, about 2000 times the centimeter radio luminosity of
Cas A for an assumed distance of about 24 Mpc.  Radio monitoring is
continuing at this and other wavelengths."


COMET C/1995 O1 (HALE-BOPP)
     N. Biver, Observatoire de Paris-Meudon (OPM); D. Ballantyne,
J. K. Davies and W. R. F. Dent, Joint Astronomy Centre, Hilo; and
D. Bockelee-Morvan, J. Crovisier and H. Rauer, OPM, report the
detection of methanol in comet C/1995 O1 with the James Clerk
Maxwell Telescope:  "From the sum of spectra observed on Mar. 16
and Apr. 5 and 6, the (4,1)-(4,0) A line at 307 GHz and the (2,1)-
(2,0) A line at 304 GHz have integrated intensities in the antenna
temperature scale of 35 +/- 5 and 43 +/- 6 mK km/s, respectively.
In the thermal equilibrium assumption, this corresponds to a
temperature of about 20 K and to Q(CH3OH) = 9 x 10**26 molecules/s.
The average of the two lines has a width of 1.4 +/- 0.2 km/s and is
slightly blueshifted (-0.04 +/- 0.04 km/s) with respect to the
comet.  This is similar to the line profile of HCN reported on IAUC
6377, but significantly broader than the lines of CO observed in
the comet."

                      (C) Copyright 1996 CBAT
1996 April 22                  (6386)            Daniel W. E. Green

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