High spatial resolution observations of some solar photospheric line profiles

Details High spatial resolution observations of some solar photospheric line profiles High spatial resolution observations of some solar photospheric line profiles

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...238..354h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 238, no. 1-2, Nov. 1990, p. 354-362.

Astronomy and Astrophysics

Astrophysics

24

Iron, Photosphere, Solar Granulation, Solar Spectra, Spatial Resolution, Astronomical Models, High Resolution, Line Spectra, Telescopes

Scientific paper

Results are presented of high resolution spectroscopic solar granulation observations with the Gregory Coude Telescope at Izana (Tenerife) in photospheric nonactive regions. Line asymmetries of four Fe I lines were analyzed depending on their origination in granular or intergranular regions. With the increased spatial resolution, instead of the classical C-shape, red line asymmetries are found in the intergranulum and blue line asymmetries in the granulum. Correlations between various line parameters such as continuum intensity, line center velocity, and equivalent width were examined. The results are in agreement with theoretical model calculations.

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