|
|
1 Introduction |
|
|
2 Observations |
|
|
3 Modeling |
|
|
4 Discussion |
|
|
5 Conclusion |
|
|
References |
|
|
Online Material |
|
|
Appendix A: The chemical network for HCO+, N2H+, and H3+ |
|
|
List of tables |
|
|
List of figures |