The abundance determination in a stellar atmosphere. I LTE experimentation using an artificial non-LTE spectrum

Details The abundance determination in a stellar atmosphere. I LTE experimentation using an artificial non-LTE spectrum The abundance determination in a stellar atmosphere. I LTE experimentation using an artificial non-LTE spectrum

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....40..127d&link_type=abstract

Astronomy and Astrophysics, vol. 40, no. 1-2, Apr. 1975, p. 127-132.

Astronomy and Astrophysics

Astrophysics

2

Abundance, Atomic Spectra, Stellar Atmospheres, Stellar Spectra, Thermodynamic Equilibrium, Astronomical Models, Ionization Potentials, Line Spectra, Spectral Line Width

Scientific paper

It is shown that the classical LTE analysis of an atomic spectrum of a solar-like star leads to values of the abundance (A) which may be different from the real values. Various uncertainties affect the results derived from neutral lines. However, proper selection of the observational data, for instance use of ion lines, can lead, in similar cases at least, to good values of A. These conclusions concern the solar-like case; however, they emphasize that, in all cases, the effect of departures from LTE needs very careful discussion.

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