Hostname: page-component-848d4c4894-sjtt6 Total loading time: 0 Render date: 2024-06-14T12:28:25.496Z Has data issue: false hasContentIssue false

Commission 21: Light of the Night Sky: (Lumiere du Ciel Nocturne)

Published online by Cambridge University Press:  25 April 2016

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

It has been known that non spherical silicate particles of a size comparable to the wavelength of light, and aggregates of such particles, produce negative polarization in the backscattering region (e.g. Xing & Hanner 1997, Yanamandra-Fisher & Hanner, 1999). It has now been shown that large aggregates of small absorbing particles of fractal dimension about 2 produce a slightly negative polarization at small phase angles (Levasseur-Regourd et al., 1997). The phase-curves strongly differ from those of Mie spheroidal particles. They are likely to be due to scattering by irregular dust particles and/or fluffy aggregates of numerous submicronic absorbing particles (Levasseur-Regourd et al., 1997; Lumme et al., 1997).

Type
Divisions and their Commissions
Copyright
Copyright © Astronomical Society of Pacific 2000

References

Bowyer, S., Berghoefer, T. and Korpela, E., 1999. EUV Emission in Abell 1975, Abell 2199, and the Coma Cluster. ApJ, December 1CrossRefGoogle Scholar
Dumont, R., Renard, J.B., Levasseur-Regourd, A.C., and Weinberg, J.L., 1998. Disentangling the main populations of the zodiacal cloud from zodiacal light observations. Earth, Planets & Space, 50, 473476.CrossRefGoogle Scholar
Gordon, K.D. et al. 1998. Detection of Extended Red Emission in the Diffuse Interstellar Medium. ApJ 498, 522, 154 Google Scholar
Greenberg, J.M., Li, A., 1997. Grain temperatures and emission in diffuse interstellar clouds. In: Diffuse infrared radiation and the IRTS (Okuda, H. e.a., eds.), ASP Conf. Ser. Vol. 124, p. 183192.Google Scholar
Greenberg, J.M., Li, A., 1999. All comets are born equal: infrared emission by dust as a key to comet nucleus composition. Planet. Space Sci. 47, 787795.Google Scholar
Ishiguro, M., Nakamura, R., Fujii, Y., Morishige, K., Yano, H., Yasuda, H., Yokogawa, S. and Mukai, T., 1999. First detection of visible zodiacal dust bands from ground-based observations. Astrophys.J., 511, 432435 Google Scholar
James, J.F., Mukai, T., Watanabe, T., Ishiguro, M. and Nakamura, R., 1997. The morphology and brightness of the zodiacal light and gegenschein. Mon. Not. R. Astron. Soc. 288, 10221026 Google Scholar
Kimura, H. and Mann, I., 1998, Brightness of the Solar F – Corona. Earth, Planets & Space, Vol. 50, 493500.Google Scholar
Levasseur-Regourd, A.C., 1998. Zodiacal light, certitudes and questions. Earth, Planets & Space 50, 607610.CrossRefGoogle Scholar
Li, A., Greenberg, J.M., 1997. A unified model of interstellar dust. Astron. Astrophys. 323, 566584.Google Scholar
Li, A., Greenberg, J.M., 1998a. From interstellar dust to comets: infrared emission from comet Hale-Bopp (C/1995 01). ApJ 498, L83L87.Google Scholar
Li, A., Greenberg, J.M., 1998b. A comet dust model for the DF-Pictoris disk. Astron. Astrophys. 331, 291313.Google Scholar
Lumme, K., Rahola, J., and Hovenier, J.W., 1997. Light scattering by dense clusters of spheres. Icarus 126, 455469.Google Scholar
Mann, I., 1998. Zodiacal Cloud Complexes. Earth, Planets and Space, Vol. 50, 465472.CrossRefGoogle Scholar
Xing, Z. and Hanner, M.A., 1997. Light Scattering by Aggregate Particles. Astron. Astrophys. 324, 805820 Google Scholar
Yanamandra-Fisher, P.A. and Hanner, M.S. (1999), Optical Properties of Non-Spherical Particles of Size Comparable to the Wavelength of Light: Application to Comet Dust. Icarus 138, 107128 CrossRefGoogle Scholar