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Icy Grains in the Solar System: Cometary and Asteroidal Environments

  • Fernando Moreno
Chapter
Part of the Astrophysics and Space Science Library book series (ASSL, volume 451)

Abstract

Icy grains have been directly detected or inferred in the circumnuclear region of various short- and long-period comets. In particular, comets 103P/Hartley 2, C/2002 T7 (LINEAR), and, recently C/2013 OS10 (Catalina) and 67P/Churyumov–Gerasimenko have been found to eject dust particles with a variable proportion of ice content. In this chapter, we report on the theoretical computation of the equilibrium temperature of sublimating grains composed by a varying amount of water ice, silicate, and carbon materials, and its variation with grain size and heliocentric distance. It is shown that even a small addition of absorbing impurities to a pure water ice grain reduces dramatically its survival. A particular application to comet 67P, the ESA Rosetta Mission target, is provided.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Instituto de Astrofísica de Andalucía, CSICGranadaSpain

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