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Table of contents
Chapter 1 Introduction
Chapter 2 Organic molecules in space
2.1 Interstellar medium and star formation
2.1.1 Interstellar gas
2.1.2 Interstellar dust
2.1.3 Star formation and interstellar molecules
2.2 Interstellar organic molecules and possible links with the origin of life
2.3 Observation of interstellar molecules by telescopes
2.4 Research in radio astronomy on molecules in vibrationally excited states
Chapter 3 Summary of the relevant theory of molecular spectroscopy
3.1 Introduction to molecular energy levels and spectroscopy
3.2 Molecular Schrodinger equation and the Born-Oppenheimer approximation
3.3 Rotational energy levels and rotational spectroscopy
3.3.1 Rigid linear rotors
3.3.2 Symmetric rotors
3.3.3 Asymmetric rotors
3.3.4 Non-rigid rotors and centrifugal distortion perturbation
3.4 Nuclear hyperfine splitting in molecules
3.5 Hindered internal rotation
3.6 Coriolis interaction and Fermi resonance
3.7 Partition function
Chapter 4 Measurements and analysis procedure
4.1 Radiation sources
4.2 Absorption cell
4.3 Detection chain
4.4 Control and acquisition
4.5 Analysis with SPFIT and SPCAT
4.6 The start and improvement of the fits
Chapter 5 n-propyl cyanide in the ground vibrational states
5.1 n-propyl cyanide and its laboratory rotational spectroscopy
5.2 The summary of the fitting for n-PrCN in its ground vibrational states
5.3 Reliability of predictions on the ground states of n-PrCN
Chapter 6 Vibrationally excited states of n-propyl cyanide
6.1 Review of the vibrationally excited molecules detected in space
6.2 Review of our first spectroscopic work and observations
6.3 The gauche conformer of n-propyl cyanide
6.3.1 v30 = 1 and 2 of g-n-PrCN
6.3.2 v29 = 1 of g-n-PrCN
6.3.3 v28 = 1 of g-n-PrCN
6.3.4 v29 = v30 = 1 of g-n-PrCN
6.4 The anti conformer of n-propyl cyanide
6.4.1 v30 = 1 of a-n-PrCN
6.4.2 v30 = 2 and v18 = 1 of a-n-PrCN
6.4.3 v29 = 1 of a-n-PrCN
6.4.4 v18 = v30 = 1 of a-n-PrCN
Chapter 7 Conclusion and outlook
7.1 Conclusion
7.2 Outlook
Conclusion (en français)
