Is there an ionization anomaly in sunspots

Details Is there an ionization anomaly in sunspots Is there an ionization anomaly in sunspots

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974a%26a....37..451b&link_type=abstract

Astronomy and Astrophysics, vol. 37, no. 2, Dec. 1974, p. 451, 452. Research supported by the Nederlandse Organisatie voor Zuive

Astronomy and Astrophysics

Astrophysics

Absorption Spectra, Plasma Spectra, Solar Spectra, Sunspots, Abnormalities, Chromium, Electron Transitions, Gas Ionization, Ionizing Radiation, Iron, Line Spectra, Molecular Spectra, Polarization Characteristics, Solar Magnetic Field, Spectrograms, Spectrum Analysis, Umbras

Scientific paper

Absorption of features on umbral spectrograms, which have been identified as abnormally strong and magnetically broadened Cr II and Fe II lines, are investigated. The profile of the 5313.585 A line is illustrated. No net polarization effect or indication of an ionization anomaly is found. It is concluded that the features consist of umbral molecular lines and stray photospheric light.

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