Observations of chromospheric lines from OSO-8

Details Observations of chromospheric lines from OSO-8 Observations of chromospheric lines from OSO-8

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980soph...66....3g&link_type=abstract

Solar Physics, vol. 66, May 1980, p. 3-12. Research supported by the Centre National d'Etudes Spatiales and NASA; Bundesminister

Physics

1

Chromosphere, Line Spectra, Oso-8, Solar Spectra, Spectrum Analysis, Stellar Spectrophotometry, Atmospheric Models, Calcium, Lyman Spectra, Magnesium, Potassium, Spatial Distribution, Spectral Resolution, Stellar Atmospheres

Scientific paper

Results of OSO-8 measurements of the line profiles of the solar Lyman alpha, Ca II K and Mg II k lines are presented. Observations were obtained with the Laboratoire de Physique Stellaire et Planetaire spectrometer at spectral resolutions of 0.25 and 0.060 A for Lyman alpha and 0.025 A for the Mg II and Ca II lines. The Lyman alpha profiles are found to be highly variable according to spatial position with the intensities of the three lines well correlated, and confirm previous observations of the quiet solar chromosphere. Data suggest that the quiet chromosphere is a dynamical phenomenon whose description in terms of a static model atmosphere is only qualitatively valid at best.

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