Interpretation of shifts and asymmetries of Fe I lines in solar facular areas

Details Interpretation of shifts and asymmetries of Fe I lines in solar facular areas Interpretation of shifts and asymmetries of Fe I lines in solar facular areas

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...173..155c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 173, no. 1, Feb. 1987, p. 155-160. Research supported by the Ministero della P

Astronomy and Astrophysics

Astrophysics

11

Faculae, Iron, Line Shape, Solar Magnetic Field, Spectral Energy Distribution, Convection Currents, Photosphere, Stellar Models

Scientific paper

An attempt is made to evaluate the effect in active regions of the suppression of convective phenomena, and of the different line profiles arising from the fluxtubes on the spatially averaged line profiles. Through use of a multi-column model, the asymmetries and shifts of three Fe I photospheric lines (g not equal to 0), observed in facular areas have been analyzed. It is assumed that the facula consists of magnetic fluxtubes (1.5 kG field) with a zero downflow embedded in an atmosphere where the convection is partially inhibited. This model satisfactorily reproduces the observed line shifts and asymmetries for all three lines.

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