Photometry and spectroscopy of the solar granulation along the polar axis and equator

Bibcode
1990Ap&SS.170...23R
DOI
10.1007/BF00652639
Rodriguez Hidalgo, I.; Collados, M.; Vazquez, M.
Bibliographical reference

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 170, no. 1-2, Aug. 1990, p. 23-30. Research supported by CICYT.

Advertised on:
8
1990
Number of authors
3
IAC number of authors
0
Citations
2
Refereed citations
2
Description
From high-resolution CCD images of granulation obtained at the Swedish Solar Tower of the Observatorio del Roque de los Muchachos at different positions on the solar disk, mean bi-dimensional spatial power spectra have been obtained at each position and restored following the method proposed by Rodriguez Hidalgo et al. (1990). The variation with latitude of the power spectrum, of the granular brightness contrast and of the mean wave number of the power spectrum are presented. The analysis is completed with spectroscopic observations obtained at the Gregory Coude Telescope of the Observatorio del Teide. The center-to-limb and latitudinal variation of the bisectors, residual intensities and equivalent widths are shown for several photometric lines.
Type
Non-refereed
Solar granulation

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