Center-to-limb variation of the Mn I 539.5 nm and the Mn I 543.2 nm line profiles

Details Center-to-limb variation of the Mn I 539.5 nm and the Mn I 543.2 nm line profiles Center-to-limb variation of the Mn I 539.5 nm and the Mn I 543.2 nm line profiles

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003kfnts...4..138v&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, Suppl, no. 4, p. 138-141

Computer Science

Scientific paper

In order to find the influence of different atmospheric layers and the granulation on profiles of Mn I 539.5/543.3 nm lines we observed them at different heliocentric angles, theta (cos theta = 1.0, 0.82, 0.6, 0.4, 0.2). Observations were carried out on the solar telescope at the Terskol Observatory. Full width at half maximum (FWHM), equivalent width (EW) and central intensity of line profiles were measured. EW and FWHM of both lines increase with heliocentric angle, while the CI decrease for the Mn 543.3 nm line and slightly increase near the limb for the Mn 539.5 nm line. Synthetic profiles of these lines were calculated under LTE assumption taking into account the hyperfine structure and compared with observed data.

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