Accurate electron temperatures from radio recombination lines

Details Accurate electron temperatures from radio recombination lines Accurate electron temperatures from radio recombination lines

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....91..279s&link_type=abstract

Astronomy and Astrophysics, vol. 91, no. 3, Nov. 1980, p. 279-282.

Astronomy and Astrophysics

Astronomy

38

Electron Energy, Hydrogen Recombinations, Radiative Recombination, Radio Astronomy, Temperature Measurement, Astronomical Models, H Ii Regions, Hydrogen Ions, Line Spectra, Radio Spectra, Spectrum Analysis

Scientific paper

Reliable electron temperatures of H II regions can be derived from individual recombination line observations made at appropriate frequencies (i.e., along the Te/Te-asterisk = 1 band) with an accuracy as high as a few percent. The great advantage of making observations in this well-defined band is that the resulting electron temperatures are virtually model-independent; this band is inert to nebular properties, including density, temperature, geometry, structure, and inhomogeneities. Away from this band, substantial corrections must be made for non-LTE effects, and these can be strongly model-dependent.

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