Far-infrared forbidden O III line emission from the galactic center

Details Far-infrared forbidden O III line emission from the galactic center Far-infrared forbidden O III line emission from the galactic center

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241l..43w&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 241, Oct. 1, 1980, p. L43-L46.

Astronomy and Astrophysics

Astronomy

29

Emission Spectra, Galactic Nuclei, Infrared Astronomy, Interstellar Matter, Milky Way Galaxy, Oxygen, Abundance, Gas Ionization, Hydrogen Clouds, Line Spectra

Scientific paper

The forbidden O III 51.8 micron fine-structure line has been detected in Sgr A West. It appears that the emission arises from the same compact clouds within the central parsec of the Galaxy which are observed in forbidden Ne II. The line intensity is used to derive an effective temperature of 32,000-40,000 K for the radiation field that ionizes the clouds. An upper limit is also reported for the forbidden O III 88.4 micron fine-structure line in Sgr A West. From this upper limit, one can conclude that the average electron density outside the known ionized clouds and within 30 arcsec of the galactic center is less than 40 per cu cm.

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