Bibcode
del Toro Iniesta, J. C.; Collados, M.; Sanchez Almeida, J.; Martinez Pillet, V.; Ruiz Cobo, B.
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. 9-16. Research supported by CICYT.
Advertised on:
8
1990
Citations
0
Refereed citations
0
Description
Spectroscopic observations, with high spatial resolution, of Ca II K
bright points very near the disk center are presented. Magnetic
concentrations have been detected in these network (facular) points by
only using intensity profiles of the well-known pair of lines Fe I
5250.22 A and 5247.06 A. No brightening of these structures with respect
to the quiet photosphere can be ascertained within an accuracy threshold
of 1.2 percent.