Book contents
- Frontmatter
- Dedication
- Contents
- Preface
- List of Acronyms
- Part I Introduction
- Part II Low-Mass Star Formation (LMSF)
- Part III High-Mass Star Formation (HMSF)
- Part IV Ionisation
- Part V Photodissociation
- 13 ATLASGAL PDRs
- 14 The Orion Bar in M42
- 15 The Horsehead Nebula in Orion
- Part VI External Galaxies
- Appendices
- List of Research Journal Abbreviations
- References
- Chemical Index
- Subject Index
15 - The Horsehead Nebula in Orion
from Part V - Photodissociation
Published online by Cambridge University Press: 11 April 2023
Book contents
- Frontmatter
- Dedication
- Contents
- Preface
- List of Acronyms
- Part I Introduction
- Part II Low-Mass Star Formation (LMSF)
- Part III High-Mass Star Formation (HMSF)
- Part IV Ionisation
- Part V Photodissociation
- 13 ATLASGAL PDRs
- 14 The Orion Bar in M42
- 15 The Horsehead Nebula in Orion
- Part VI External Galaxies
- Appendices
- List of Research Journal Abbreviations
- References
- Chemical Index
- Subject Index
Summary
Comparisons between low- and high-flux PDR conditions are discussed in relation to the Horsehead Nebula and the Orion Bar. Contrasting observations of selected species between the PDR margin and the inner dark cloud allow chemical modellers to test formation and destruction reaction networks against quite closely constrained physical conditions. The anomalous abundance of CH3CN is considered here in the Horsehead context in the presence of other nitrile COMs observed, as are comparisons of sulphur chemistry in the low- and high-flux cases and the latest ideas on the ISM sulphur reservoir.
- Type
- Chapter
- Information
- Case Studies in Star FormationA Molecular Astronomy Perspective, pp. 236 - 252Publisher: Cambridge University PressPrint publication year: 2023