The H 166 alpha recombination line in the Carina Nebula

Details The H 166 alpha recombination line in the Carina Nebula The H 166 alpha recombination line in the Carina Nebula

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981rmxaa...6..269a&link_type=abstract

(International Astronomical Union, Reunion Regional Latinoamericana de Astronomia, 2nd, Merida, Venezuela, Jan. 19-23, 1981) Rev

Astronomy and Astrophysics

Astronomy

2

Astronomical Spectroscopy, H Alpha Line, Hydrogen Recombinations, Nebulae, Radio Sources (Astronomy), Abundance, Electron Energy, Velocity Distribution

Scientific paper

Observations of the Carina Nebula at the frequency corresponding to the H166 alpha line are reported. The observations were made with a 30-m antenna having a noise temperature of about 90 K and a 34 arcmin HPBW at 21 cm. Several profiles where the observed line was detected above the noise level are shown. Two of these profiles clearly show a double structure whose component velocities are -10 and -30 km/s. The single profiles have central velocities between -20 and -25 km/s. Electron temperatures between 5000 and 8000 K corresponding to each point are derived under the assumption of local thermodynamic equilibrium.

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