Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aujph..28..185m&link_type=abstract
Australian Journal of Physics, vol. 28, Apr. 1975, p. 185-207.
Astronomy and Astrophysics
Astronomy
23
H Lines, Milky Way Galaxy, Nebulae, Radiative Recombination, Radio Sources (Astronomy), Abundance, Astronomical Catalogs, H Alpha Line, Heavy Elements, Helium, Hydrogen Recombinations, Magellanic Clouds
Scientific paper
Seventeen intense nebulae in the southern Milky Way have been surveyed for their radio recombination lines of hydrogen and helium, H 90 alpha, He 90 alpha, H 113 beta, H 129 gamma, and of elements heavier than helium, X 90 alpha. The H 90 alpha line for 30 Doradus in the Large Magellanic Cloud was also observed. Data on source size, flux density, continuum temperature, line temperature, line half-width and radial velocity are used to derive information about the sources. This information includes electron temperatures and turbulent velocities, the abundance ratio of singly ionized helium to ionized hydrogen, and the intensity ratios of beta and gamma lines to alpha lines. The lines from elements heavier than helium are discussed.
Batchelor Richard A.
McGee Richard X.
Newton Lynette M.
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