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Metallicity Effects in PDRs

Published online by Cambridge University Press:  04 October 2008

C. Kramer ,
S. Aalto ,
R. Simon  and
M. Röllig
M. Röllig*
Affiliation:
Argelander Institut für Astronomie, Universität Bonn, Germany Now: 1. Physikalisches Institut, Univ. zu Köln, Germany
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Abstract

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.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 31: Far-Infrared Workshop 2007 , 2008 , pp. 129 - 135
Copyright
© EAS, EDP Sciences, 2008

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