Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325..480n&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 325, Feb. 1, 1988, p. 480-489. NSERC-supported research.
Astronomy and Astrophysics
Astrophysics
22
Convection, Infrared Spectra, Metallicity, Photosphere, Solar Atmosphere, Visible Spectrum, Atomic Spectra, Iron, Line Spectra, Spectrum Analysis
Scientific paper
A study is made of the velocity at line bottom of the lines of Fe I in infrared and visible FTS spectra observed at the center of the solar disk by Delbouille et al. It is shown that the velocity of the iron lines at the center of the solar disk can be expressed in terms of the line depth and excitation energy to an accuracy of the order of 0.03 km s-1. There is no evidence of a dependence on wavelength that cannot be explained by the uncertainties of the laboratory frequencies. This result should provide strong constraints for models of the convective motions in the solar photosphere.
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