Accuracy of line-profile measurements

Details Accuracy of line-profile measurements Accuracy of line-profile measurements

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..719g&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 91, Oct.-Nov. 1979, p. 719-723.

Astronomy and Astrophysics

Astronomy

9

Astronomical Spectroscopy, High Resolution, Line Spectra, Stellar Spectrophotometry, Abundance, Accuracy, Fourier Transformation, Iron, Spectral Resolution, Stellar Atmospheres, Stellar Spectra

Scientific paper

Comparisons are made among high-resolution line-profile measurements of Fe I 6065 and 6253 wavelengths in the spectrum of Arcturus. The line-profile measurements were made with four entirely different sets of equipment in order to have a leverage on external errors; three coude spectrographs and one Fourier transform spectrometer are used. The results indicate consistency in line shape to about 1% but zero-level differences of 2-5%. This represents a substantial improvement over the accuracy attained in the past decades. Reference profiles are tabulated for comparison by future observers.

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