The extinction of starlight revisited |
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| Authors: | N C Wickramasinghe B Jazbi F Hoyle |
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| Institution: | (1) School of Mathematics, University of Wales College of Cardiff, Wales, UK |
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| Abstract: | The rigorous Kerker-Matijevi formulae for light scattering by co-axial double cylinders are used to calculate the extinction properties of hollow organic grains. A size distribution of such particles together with iron whiskers of radii 0.01  m, silica spheres of radius 0.03 m and free aromatic molecular clusters comprised of 50–100 atoms yield excellent agreement with data on the extinction of starlight. The mass ratios of silica to organics and of iron to organics are in good accord with cosmic abundance constraints. |
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