Long-term width and asymmetry variation of some Fe I photospheric lines in solar quiet regions at the disk center

Details Long-term width and asymmetry variation of some Fe I photospheric lines in solar quiet regions at the disk center Long-term width and asymmetry variation of some Fe I photospheric lines in solar quiet regions at the disk center

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...158..275c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 158, no. 1-2, April 1986, p. 275-278. Research supported by the Universita di

Astronomy and Astrophysics

Astrophysics

2

Iron, Photosphere, Solar Activity, Solar Spectra, Spectral Energy Distribution, Spectral Line Width, Convection Currents, Solar Atmosphere, Solar Magnetic Field, Spectrum Analysis

Scientific paper

Observations obtained in the years 1983 and 1984 at the Donati Solar
Tower in Arcetri show that at the disk center the asymmetry and width of
three Fe I photospheric lines show a long term variation. These results
are in agreement with previous full disk observations of secular trends
in asymmetry and equivalent width.

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