Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4455: 1987 QB; EXTRAGALACTIC METHANOL

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 4454 SEARCH Read IAUC 4456
IAUC number 

                                                  Circular No. 4455
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 617-495-7244/7440/7444


1987 QB
     Further precise positions have been reported as follows:

     1987 UT             R.A. (1950) Decl.          Observer
     Aug. 28.44583    22 55 37.91    - 7 51 23.9    Gibson
     Sept.25.15370    23 43 41.47    - 8 40 31.5    Shao
          26.22756    23 44 38.30    - 8 38 55.5      "

J. Gibson (Palomar Observatory).  0.46-m Schmidt.
C.-Y. Shao and S. Nakano (Oak Ridge Observatory).  1.5-m reflector.
   Measurer Shao.
     Improved elements from 7 observations Aug. 25-Sept. 26:

         T = 1987 Aug. 2.0949 ET
         W = 156.0239                    e =   0.596685
         O = 153.0462   1950.0           a =   2.828833 AU
         i =   3.4760                    n =   0.2071539
         q =   1.140912 AU               P =   4.758 years

     1987 ET      R.A. (1950) Decl.     Delta      r       V
     Sept.22    23 40.67    - 8 43.3    0.297    1.299    17.4
     Oct.  2    23 49.40    - 8 25.4
          12    23 56.78    - 7 45.9    0.449    1.423    18.8
          22     0 04.10    - 6 48.9
     Nov.  1     0 12.12    - 5 37.5    0.655    1.564    20.0
          11     0 21.11    - 4 15.5
          21     0 31.10    - 2 46.0    0.916    1.713    21.0


EXTRAGALACTIC METHANOL
     C. Henkel, T. Jacq, R. Mauersberger and K. Menten, Max-
Planck-Institut fur Radioastronomie, Bonn, report the first
detection of extragalactic methanol from the galaxies NGC 253 and IC
342.  The measurements of the quartet of 2K-1K lines at 96.75 GHz
were carried out with the IRAM 30-m telescope.  Toward NGC 253,
the stronger source (TA* = 120 mK), the emission arises from two
components, one associated with the nucleus (size << 20"), the
other located > 15" to the northeast.  A preliminary comparison of
CH3OH with H2 column densities (the latter derived from CO data)
suggests that CH3OH/H2 abundance ratios are within the range
commonly observed in galactic sources.


1987 September 26              (4455)              Brian G. Marsden

Read IAUC 4454 SEARCH Read IAUC 4456

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

Valid HTML 4.01!