On asymmetries of solar spectral lines

Abstract

The profiles of 43 lines have been observed at the centre and near the limb of the solar disk. Their asymmetry decreases towards the limb, and increases with the equivalent width and the mean heigth of line formation; no relation was found between the asymmetry and the line excitation potential, nor with the degree of ionization, nor with the usually adopted macroturbulent velocity. The asymmetry appears to be due to radial movements.

Analyses of archival data for cool dwarfs. 2: A catalog of temperatures

“…Binaries are an inevitable concern if one wishes to derive metallicities for large numbers of dwarfs. Two papers which consider this problem have been published (Bettis and Branch 1975;Barambon and Jousson 1981). Bettis and Branch use a temperature index from one part of the spectrum and then consider line strengths in another part of the spectrum.…”