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Article Contents
1 Introduction
2 Model
3 X-ray induced chemistry
4 Results and discussion
5 X-ray tracers
6 AFGL 2591 models
7 Calculated emission lines
8 Conclusion
Online Material
Appendix A: Initial chemical abundances
Appendix B: Electron recombination and charge transfer reactions
Appendix C: Influence of $T{_{{\rm X}}}$ and $N{_{{\rm H,in}}}$
Appendix D: Influence of an outer FUV field and cosmic rays
Appendix E: Comparison to observations

List of tables
List of figures

Copyright ESO 2005
Published by EDP Sciences