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Center-to-limb Variation of Solar Line Profiles as a Test of NLTE Line Formation Calculations

Prieto, Carlos Allende; Asplund, Martin; Fabiani Bendicho, P

Description

We present new observations of the center-to-limb variation of spectral lines in the quiet Sun. Our long-slit spectra are corrected for scattered light, which amounts to 4-8% of the continuum intensity, by comparison with a Fourier transform spectrum of the disk center. Different spectral lines exhibit different behaviors, depending on their sensitivity to the physical conditions in the photosphere and the range of depths they probe as a function of the observing angle, providing a rich...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
URI: http://hdl.handle.net/1885/87533
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361:20047050

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