On the thermal behaviour of small iron grains

J. Fischera*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)


    The optical properties of small spherical iron grains are derived using a Kramers-Kronig-consistent model of the dielectric function including its dependence on temperature and size. Especially discussed is the effect of the size dependence, which results from the limitation of the free path of the free electrons in the metal by the size of the grain, on the absorption behaviour of small iron spheres and spheroids. The estimated absorption properties are applied to study the temperature behaviour of spherical and spheroidal grains which are heated by the interstellar radiation field.

    Original languageEnglish
    Pages (from-to)99-108
    Number of pages10
    JournalAstronomy and Astrophysics
    Issue number1
    Publication statusPublished - Dec 2004


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