Bibcode
Rodriguez Hidalgo, I.; Collados, M.; Vazquez, M.
Referencia bibliográfica
(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.
Fecha de publicación:
8
1990
Número de citas
2
Número de citas referidas
2
Descripción
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.