Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...109..233c&link_type=abstract
Astronomy and Astrophysics, vol. 109, no. 2, May 1982, p. 233-237. Research supported by the Consiglio Nazionale delle Ricerche
Astronomy and Astrophysics
Astrophysics
13
Iron, Line Spectra, Solar Spectra, Solar Velocity, Stellar Spectrophotometry, Data Reduction, Fabry-Perot Interferometers, Solar Spectrometers, Telluric Lines, Velocity Distribution, Wavelengths
Scientific paper
In order to test whether differences in results about the shape of the 6301.5091 Fe I solar line can be ascribed to temporal fluctuations of the line asymmetry or to instrumental effects, measurements of the absolute bisector of the line have been obtained with the Fabry-Perot interferometer built at the Arcetri Solar Tower. The bisector agrees with that previously obtained by Adam et al. (1976). The wavelength of the line coincides with previous measurements, suggesting that, at the disk center, the line is stable within 5 m/s for an integration area of two arcmin. This result also shows that the three telluric lines used as wavelength references are stable down to this limit.
Cavallini Fabio
Ceppatelli Guido
Righini Alberto
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