Distributions of Density, Temperature and Abundances in the Orion Nebula

Details Distributions of Density, Temperature and Abundances in the Orion Nebula Distributions of Density, Temperature and Abundances in the Orion Nebula

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jkas...15....9k&link_type=abstract

Journal of the korean Astronomical Society, vol. 15, no. 1, p. 9-18

Astronomy and Astrophysics

Astronomy

2

Scientific paper

To derive the distributions of electron density, temperature and gas-phase metal abundances within the Orion Nebula, we have performed a non-LTE analysis to the radio observations of hydrogen recombination lines and continuum flux over the frequency range from 0.1 GHz to 100 GHz. We have explicitly included the thermal balance condition in our analysis, hence our derived distributions have their internal consistencies. This enables us to derive the radial distribution of Oxygen and Nitrogen. The gas-phase concentrations of these cooling agents show about the solar values at the very central part of the nebula, then, decrease slowly outward, and finally become about one quarter of the solar values in the outer extended envelope. Such an outward decrease is interpreted as an outward increase of dust concentrations in the Origin.

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