Electron density diagnostics for late-type stellar atmospheres

Details Electron density diagnostics for late-type stellar atmospheres Electron density diagnostics for late-type stellar atmospheres

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324.1068k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 324, Jan. 15, 1988, p. 1068-1070. SERC-supported research.

Astronomy and Astrophysics

Astrophysics

4

Electron Density (Concentration), Late Stars, Plasma Diagnostics, Stellar Atmospheres, Stellar Spectra, Ultraviolet Spectra, Carbon, Electron Energy, Emission Spectra, Oxygen, Silicon

Scientific paper

R-matrix calculations of electron excitation rates in C III, O III, and Si IV have been used to obtain several theoretical emission-line ratios for a range of electron temperatures and densities applicable to late-type stellar atmospheres. Data are derived for the ratios I(C III 1908 A)/I(O III 1666 A), I(O III 1666 A)/I(Si IV 1402 A), and I(C III 1908 A)/I(Si IV 1402 A). It is suggested that differences found between the results and those of Doschek et al. (1978) are due to the present adoption of improved atomic data.

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