High resolution profiles of the MG II H and MG II K lines

Details High resolution profiles of the MG II H and MG II K lines High resolution profiles of the MG II H and MG II K lines

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...295..517s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 295, no. 2, p. 517-528

Astronomy and Astrophysics

Astrophysics

9

Chromosphere, H Lines, K Lines, Limb Darkening, Magnesium, Solar Atmosphere, Solar Limb, Solar Spectra, Balloon-Borne Instruments, Data Processing, Data Reduction, Spectrographs

Scientific paper

Spectra of the Mg II h and k lines have been recorded by the balloon-borne telescope spectrograph RASOLBA. The observations have been made at the center of the solar disk and across the limb with an angular resolution of 1 arcsec along the 30 x 0.3 sq arcsec slit and a spectral resolution of 15 pm within the 20 nm wavelength range. We present here the method used to reduce the data and profiles of these lines at several locations on the solar disk with uncertainties in the intensity of 16% at sun center. Integral and spectral intensity, line of sight velocities and limb darkening curve derived from these spectra are discussed.

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