Abstract
The Sun's limb darkening was observed repeatedly between the 1986 minimum and the 1990 maximum of solar activity.Systematic variations, which could depend either on the momentary activity and/or the phase in the solar cycle, werenot detectable, either at continuum wavelengths or in two broad-band spectral intervals. Completelyirregular variations, which concern not only individual, successive scans (due to granulation, etc.), but also thedaily andseasonal averages, are usually less than 1%, but can reach occasionally 2% or even more. Minoreast-west asymmetries even in the seasonal means seem to be well established, mainly for λ < 400 nm. Thefinal, mean limb-darkening coefficients agree basically with those published by Pierce and Slaughter (1977) and Pierce, Slaughter, and Weinberger (1977), but show a much lower scatter when plotted against wavelength.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Allen, R. G.: 1976, Thesis, University of Arizona, Tucson.
Brückner, G. E., Floyd, L. E., Lean, J. L., Lund, P. A., Prinz, D. K., and Van Hoosier, M. E.: 1994, in J. M. Pap, C. Fröhlich, H. S. Hudson, and S. Solanki (eds.), ‘The Sun as a Variable Star’,IAU Colloq. 143, Cambridge University Press, in press.
Elste, G. H.: 1990,Solar Phys. 126, 37.
Foukal, P.: 1989,Solar Phys. 120, 249.
Fröhlich, C.: 1994, in J. M. Pap, C. Fröhlich, H. S. Hudson, and S. Solanki (eds.), ‘The Sun as a Variable Star’,IAU Colloq. 143, Cambridge University Press, in press.
Heath, D. F. and Thekaekara, M. P.: 1977, in O. R. White (ed.),The Solar Output and Its Variation, Colorado Assoc. University Press, Boulder, p. 193.
Keenan, P. C.: 1991,Publ. Astron. Soc. Pacific 103, 642.
Neckel, H. and Labs, D.: 1984,Solar Phys. 90, 205.
Neckel, H. and Labs, D.: 1987,Solar Phys. 110, 139.
Neckel, H. and Labs, D.: 1989,Solar Phys. 120, 205.
Neckel, H. and Labs, D.: 1990,Solar Phys. 126, 47.
Pierce, A. K.: 1964,Applied Optics 3, 1337.
Pierce, A. K.: 1990, private communication.
Pierce, A. K. and Slaughter, C. D.: 1977,Solar Phys. 51, 25.
Pierce, A. K., Slaughter, C. D., and Weinberger, D.: 1977,Solar Phys. 52, 179.
Rottman, G., Woods, T. N., White, O. R., and London, J.: 1994, in J. M. Pap, C. Fröhlich, H. S. Hudson, and S. Solanki (eds.), ‘The Sun as a Variable Star’,IAU Colloq. 143, Cambridge University Press, in press.
Thuillier, G., Simon, P., Herse, M., Labs, D., Gilloray, D., and Petermans, W.: 1994, in J. M. Pap, C. Fröhlich, H. S. Hudson, and S. Solanki (eds.), ‘The Sun as a Variable Star’,IAU Colloq. 143, Cambridge University Press, in press.
Unsöld, A.: 1955,Physik der Sternatmosphären, 2nd ed., Springer-Verlag, Berlin, pp. 613–617.
Wolff, C. L. and Hickey, J. R.: 1987,Solar Phys. 109, 1.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Neckel, H., Labs, D. Solar limb darkening 1986–1990 (λλ303 to 1099 nm). Sol Phys 153, 91–114 (1994). https://doi.org/10.1007/BF00712494
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00712494