Radio recombination lines from diffuse interstellar gas in the Galaxy

Details Radio recombination lines from diffuse interstellar gas in the Galaxy Radio recombination lines from diffuse interstellar gas in the Galaxy

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...370..225c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 370, March 20, 1991, p. 225-227. Research supported by State University of

Astronomy and Astrophysics

Astronomy

1

H Ii Regions, Interstellar Gas, Milky Way Galaxy, Radio Sources (Astronomy), Astronomical Models, H Lines, Recombination Reactions, Thermodynamic Equilibrium

Scientific paper

The paper reports the detection of the H159-alpha and H200-beta radio recombination lines at 1.62 GHz at l = 30.5 deg and 31.0 deg in the Galactic plane. Using the new observations obtained with the NRAO 43 m telescope a non-LTE analysis is presented to show that the observed LTE intensity ratio for these lines can arise from an inhomogeneous ionized nebula with a low-density component.

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