An investigation of the solar NA D line observations

Details An investigation of the solar NA D line observations An investigation of the solar NA D line observations

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....81...95t&link_type=abstract

Astronomy and Astrophysics, vol. 81, no. 1-2, Jan. 1980, p. 95-99.

Astronomy and Astrophysics

Astrophysics

1

D Lines, Doppler Effect, Solar Spectra, Spectral Line Width, Absorptivity, Integral Equations, Sodium, Water Vapor

Scientific paper

A method is presented in which the Doppler width can be obtained directly from the intensity integral given observations of a single line at several values of the cosine of the angle of observation. The method is applied to the cores of the solar Na D-line observations of Waddell (1962) and the results are found to be inconsistent with the results of test cases on synthetic data. It is suggested that the observed profiles are affected differently by some factor, quite possibly the incomplete removal of terrestrial H2O contamination in D 2, and that this difference would have a serious effect on inversion methods employing intercomparison techniques.

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