Intensity correlations in granular spectra

Details Intensity correlations in granular spectra Intensity correlations in granular spectra

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...235..437b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 235, no. 1-2, Aug. 1990, p. 437-440.

Astronomy and Astrophysics

Astrophysics

10

Digital Simulation, Line Spectra, Solar Granulation, Solar Spectra, Spatial Resolution, High Resolution, Iron

Scientific paper

Spectra of high spatial resolution were taken at the Gregory-Coude Telescope on Tenerife to investigate the relation between the line core intensities and the adjacent continuum for selected iron lines. Anti-correlations of these two quantities are found for the four lines with low excitation potential Fe5079, Fe5434, Fe5501, and Fe5506 which are known to show a limb effect although they have no blue shift at the disk center. An anti-correlation is also found for the line with high excitation potential, Fe5074, which shows a very small limb effect. This result is compatible with a granular intensity pattern which reverses in high layers, as suggested by numerical simulations of the granulation.

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