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Determining the cosmic ray ionization rate in dynamically evolving clouds

Abstract:

The ionization fraction is an important factor in determining the chemical and physical evolution of star forming regions. In the dense, dark starless cores of such objects, the ionization rate is dominated by cosmic rays; it is therefore possible to use simple analytic estimators, based on the relative abundances of different molecular tracers, to determine the cosmic ray ionization rate. This paper uses a simple model to investigate the accuracy of two well-known estimators in dynamically...

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Publisher copy:
10.1051/0004-6361:20053837
Journal:
Astron.Astrophys. More from this journal
Volume:
448
Pages:
425-432
Publication date:
2005-11-02
DOI:
Keywords:
Pubs id:
pubs:204331
UUID:
uuid:e718c82f-8280-480b-aa81-8a7ceac32ca6
Local pid:
pubs:204331
Source identifiers:
204331
Deposit date:
2012-12-19

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