Emission heights and centre-to-limb variation of some chromospheric lines

Details Emission heights and centre-to-limb variation of some chromospheric lines Emission heights and centre-to-limb variation of some chromospheric lines

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....48..121w&link_type=abstract

Astronomy and Astrophysics, vol. 48, no. 1, Apr. 1976, p. 121-127. Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

4

Chromosphere, Emission Spectra, Photoelectric Emission, Solar Limb, Solar Spectra, Absorptivity, Data Reduction, Spectrum Analysis

Scientific paper

A modified photoelectric-drift scan technique has been used to measure emission heights as well as the center-to-limb variation of some of the strongest lines in the quiet chromosphere (Ca(+) K, Mg b(1), Na D, H-alpha). The true center-to-limb variations as derived from the measurements are compared with previous results and with predictions from very recent non-LTE calculations. With few exceptions, the agreement is very satisfactory. A high-resolution computerized version of Mohler's (1960) method has been used to determine mean emission heights at the limb. The measured heights are compared with previous empirical results.

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