Radio recombination lines from diffuse interstellar gas in the Galaxy

Journal Article · Fri Mar 01 00:00:00 EST 1991 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169807· OSTI ID:5912386

Cersosimo, J C; Onello, J S ^[1]

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1. Arecibo Observatory (Puerto Rico) New York State Univ., Cortland (USA)

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. 16 refs.

• OSTI ID: 5912386
• Journal Information: Astrophysical Journal; (USA), Vol. 370; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MILKY WAY
RADIOWAVE RADIATION
COSMIC GASES
COSMIC RADIO SOURCES
H2 REGIONS
INTERSTELLAR SPACE
IONIZED GASES
LTE
MATHEMATICAL MODELS
NEBULAE
ELECTROMAGNETIC RADIATION
EQUILIBRIUM
FLUIDS
GALAXIES
GASES
RADIATIONS
SPACE
640105* - Astrophysics & Cosmology- Galaxies