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天文学中的尘埃与化学-Dust and chemistry in astronomy文件编号:1003

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标题(title):Dust and chemistry in astronomy
天文学中的尘埃与化学
作者(author):Millar, T. J.; Williams, David A.
出版社(publisher):Routledge
大小(size):53 MB (55504439 bytes)
格式(extension):pdf
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Dust is widespread in the galaxy. To astronomers studying stars it may be just an irritating fog, but it is becoming widely recognized that cosmic dust plays an active role in astrochemistry. Without dust, the galaxy would have evolved differently, and planetary systems like ours would not have occurred. To explore and consolidate this active area of research, Dust and Chemistry in Astronomy covers the role of dust in the formation of molecules in the interstellar medium, with the exception of dust in the solar system. Each chapter provides thorough coverage of our understanding of interstellar dust, particularly its interaction with interstellar gas. Aimed at postgraduate researchers, the book also serves as a thorough review of this significant area of astrophysics for practicing astronomers and graduate students.  Read more...

Table of contents :
Cover......Page 1
Half Title......Page 2
Title Page......Page 4
Copyright Page......Page 5
Table of Contents......Page 6
Preface......Page 10
Authors' Addresses......Page 12
1.1 The Past......Page 14
1.2 The Present......Page 16
1.3 The Future......Page 18
1.5 Further Reading......Page 20
2.1 Introduction......Page 22
2.2 Infrared Spectroscopy......Page 24
2.3 The Observed Features......Page 27
2.4 Conclusions and Future Research......Page 43
References......Page 45
3.1 Introduction......Page 50
3.2 Observations of the Orion Hot Core......Page 51
3.3 HCN Isotopomers Towards the Orion Hot Core......Page 56
3.4 Observations of Other Hot Cores......Page 58
3.5 Determining Physical Parameters of Hot Cores......Page 60
3.6 Prospects......Page 62
References......Page 63
4.1 Introduction......Page 66
4.2 Star-forming Regions......Page 68
4.3 Shocks......Page 69
4.4 Photodissociation Regions......Page 77
References......Page 80
5.1 Introduction......Page 84
5.2 Bonding in Carbon Compounds......Page 85
5.3 Structure of Solids......Page 86
5.4 Formation of Carbon Solids......Page 88
5.5 Constraints on Bonding in HAC......Page 90
5.6 Electronic Transitions......Page 92
5.7 Luminescence......Page 94
5.8 Infrared Spectra......Page 95
5.9 Comparison with Astronomical Spectra......Page 98
5.10 What is Carbonaceous Dust?......Page 106
References......Page 111
6.1 Introduction......Page 116
6.2 The IR Emission Features......Page 118
6.3 PAHs and C-stardust Formation......Page 129
6.4 Photochemistry of PAHs......Page 134
6.5 PAHs and Ion-Molecule Chemistry......Page 138
6.6 "Surface" Chemistry of PAHs......Page 142
6.7 Summary......Page 149
References......Page 150
7.1 Introduction......Page 156
7.2 The Nature of Interstellar Dust and its Interaction with Gaseous Species......Page 157
7.3 Sticking Probabilities......Page 161
7.4 Mobility of Adsorbed Species......Page 165
7.5 Reactions Between Adsorbed Species......Page 167
7.6 Ejection or Retention of Reaction Products......Page 169
7.7 Mantle Processing......Page 170
7.8 Desorption Processes on Interstellar Dust......Page 172
7.9 Conclusion......Page 180
References......Page 181
8.1 Introduction......Page 184
8.2 The Role of Dust in Diffuse Cloud Chemistry......Page 185
8.3 H2 (J) Formation on Dust......Page 186
8.4 Chemical Modelling of Diffuse Clouds: Hydrides from Dust......Page 190
8.5 Hydrocarbons from Shocked Dust......Page 193
References......Page 194
9.1 Why Grain Chemistry is Needed......Page 196
9.2 Previous Models with Grain Reactions......Page 197
9.3 Surface Processes: More Detail......Page 202
9.4 A New Gas-Grain Chemical Model......Page 207
9.6 Acknowledgments......Page 215
References......Page 216
10.1 Clusters of Star-forming Cores......Page 218
10.2 The Initial State Clumps......Page 219
10.3 The Collapse of Initial State Clumps......Page 222
10.4 Chemistry in a Core Cluster with Low Mass Stars......Page 223
10.5 Core Collapse......Page 227
10.6 Relating the Core Cluster and Collapsing Core Chemistries to the Composition of Comet Halley's Ices......Page 228
10.7 A Wish List of Observations......Page 229
References......Page 230
11.1 Introduction......Page 232
11.2 The Environment and Identification of Low Mass Star-forming Regions......Page 234
11.3 Observations of Dense Cores......Page 240
11.4 A Dynamical Model of the Chemistry in Star-forming Regions......Page 242
11.5 Concluding Remarks......Page 258
References......Page 260
12.1 Introduction......Page 262
12.2 General Considerations......Page 263
12.3 Models of Orion Sources......Page 267
12.4 Chemical Differentiation in the Orion Hot Cores......Page 275
12.5 Other Issues......Page 277
12.6 Conclusions......Page 279
References......Page 280
13.1 Introduction......Page 284
13.2 Basic Experimental Set-up......Page 286
13.3 Some Examples of Photochemical Evolution in Dust......Page 287
13.4 Molecule Desorption......Page 294
13.5 Dust and Gas in Diffuse (Translucent) and Dense Clouds......Page 298
13.6 PAH Survival and Destruction......Page 301
13.8 Acknowledgments......Page 304
References......Page 305
14.1 Introduction......Page 310
14.2 Energy Deposition by Particles in Matter......Page 311
14.3 Chemical Effects......Page 314
14.4 Mechanisms of Chemical Effects......Page 322
14.5 Erosion......Page 324
14.6 Applications to Cosmic Dust......Page 330
References......Page 338
Index......Page 344
Author Index......Page 348



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