Millimetre-wave continuum observations of the Galactic Centre

Details Millimetre-wave continuum observations of the Galactic Centre Millimetre-wave continuum observations of the Galactic Centre

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.232..407s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 232, May 15, 1988, p. 407-417.

Astronomy and Astrophysics

Astronomy

3

Astronomical Spectroscopy, Galactic Nuclei, Galactic Radiation, Radio Observation, Cosmic Dust, Dark Matter, Interstellar Matter, Millimeter Waves, Molecular Clouds

Scientific paper

The authors present millimetre-wave continuum maps of Sgr A at 230 GHz and of a wider region around the Galactic Centre at 84 GHz. They use the latter to investigate the distribution of spectral index between 10.7 and 84 GHz for Sgr A and the filamentary bridge and arc features. A flat spectrum "spur" of emission is found, aligned with the Sgr A West source. It crosses the non-thermal Sgr A halo and appears to represent the continuation of one of the "threads" of Morris & Yusef-Zadeh (1985). An 84-GHz feature to the south of Sgr A probably represents the very long wavelength emission from cold dust in the molecular cloud M-0.13-0.08.

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