Metallicity Effects in PDRs

Details Metallicity Effects in PDRs Metallicity Effects in PDRs

2008-01-30

arxiv.org/abs/0801.4649v1

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures, to appear in proceedings of "Far-Infrared and Submillimeter Emission of the Interstellar Medium", EAS Publ

Scientific paper

10.1051/eas:0831026

Almost all properties of a photodissociation region (PDR) depend on its metallicity. The heating and cooling efficiencies that determine the temperature of the gas and dust, the dust composition, as well as the elemental abundances that influence the chemical structure of the PDR are just three examples that demonstrate the importance of metallicity effects in PDRs. PDRs are often associated with sites of star formation. If we want to understand the star formation history of our own Galaxy and of distant low-metallicity objects we need to understanding how metallicity acts on PDR physics and chemistry.

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