On the Estimation of Grain Size Distributions in Protoplanetary Disks

Details On the Estimation of Grain Size Distributions in Protoplanetary Disks On the Estimation of Grain Size Distributions in Protoplanetary Disks

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..321p&link_type=abstract

SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret

Astronomy and Astrophysics

Astrophysics

Scientific paper

Studying the scattered light intensity profiles of resolved protoplanetary disks may help to constrain the optical properties of the dust they contain. This is so because the outcome of the scattering process, i.e., the emergent intensity and polarisation profiles are strongly dependent on the scattering geometry but also on the grain properties (size, shape, composition). In this poster we will show, through two examples, that information can indeed be gathered regarding the dust properties in disks. However, because the parameter space is large, solutions are generally not unique. Nevertheless, multi-wavelength studies, and consideration of the linear and/or circular polarisation provide additional constraints that allow to refine the solutions to a useful range.

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