On the facular contrast near the solar limb

Abstract

view Abstract Citations (18) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the facular contrast near the solar limb Libbrecht, K. G. ; Kuhn, J. R. Abstract Libbrecht and Kuln (1984) have conducted measurements of the continuum contrast of solar faculae in wavelength bands centered at 800 and 525 nm. Some of the obtained results did not agree with observations reported by Chapman and Klabunde (1982). The present paper has the objective to provide new data, taking into account a demonstration of a procedure for obtaining the facular contrast near the solar limb on the basis of a simple analysis. The findings confirm the results of Libbrecht and Kuln that the contrast in the region near the extreme solar limb decreases with decreasing distance to the limb. Attention is given to exposed limbs and flux ratios for three occulting disks, seasonal average normalized flux profiles Delta F/I for the three disks in two colors, and excess facular signal Delta F/I plotted for various disks using 1984 data. Publication: The Astrophysical Journal Pub Date: December 1985 DOI: 10.1086/163772 Bibcode: 1985ApJ...299.1047L Keywords: Faculae; Solar Limb; Spectral Energy Distribution; Stellar Spectrophotometry; Annual Variations; Radiant Flux Density; Solar Physics full text sources ADS |