Neutral Atmospheres of Comets: A Distributed Source Model

Details Neutral Atmospheres of Comets: A Distributed Source Model Neutral Atmospheres of Comets: A Distributed Source Model

Jan 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..26..153i&link_type=abstract

Astrophysics and Space Science, Volume 26, Issue 1, pp.153-166

Astronomy and Astrophysics

Astrophysics

24

Scientific paper

It is argued that the typical nuclear region of a comet, under a variety of circumstances, consists of a central icy nucleus surrounded by an extended icy halo of grains forming a supplementary source for the observed atmospheric constituents. A complete hydrodynamic description of a neutral atmosphere corresponding to such a distributed source model when the predominant ‘parent-molecule’ is H2O is given, and numerical results corresponding to two different velocity distributions of the icy halo consistent with smaller and larger grains are computed. The applicability and relevance of these models are discussed.

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