New observations of the umbral limb-darkening are presented. We find a real and significant decrease in the umbra/photosphere intensity ratio towards the limb. This result contrasts the findings of previous authors and we believe this to be the first time such a decrease is reported. Our conclusion
β¦ LIBER β¦
Latitudinal variation of the solar limb-darkening function
β Scribed by Ronald J. Kroll
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 404 KB
- Volume
- 152
- Category
- Article
- ISSN
- 0038-0938
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The limb-darkening data published by Neckel and Labs (1994) (5th-order polynomials Ps(#), # = cos 0) are used to represent the limb darkening by the functions Ln (#), proposed first by . When plotted against wavelength, the coefficients of these functions show a rather low scatter and appear to be l