Techniques d'observation spectroscopique d'astéroïdes
Techniques d'observation spectroscopique d'astéroïdes Techniques d'observation spectroscopique d'astéroïdes
tel-00785991, version 1 - 7 Feb 2013
Contents Tables 22 Figures 27 I INTRODUCTION 29 tel-00785991, version 1 - 7 Feb 2013 1 Why asteroids? 31 1.1 The place of asteroids in the structure of the Solar System . . . . . . . . . . . . 31 1.2 The Discovery Of Asteroids . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 1.3 Distribution and diversity of asteroids . . . . . . . . . . . . . . . . . . . . . . 35 1.4 Asteroid brightness and albedo . . . . . . . . . . . . . . . . . . . . . . . . . . 38 1.5 My contribution to asteroids discovery . . . . . . . . . . . . . . . . . . . . . . 38 2 Why spectroscopy? 43 2.1 Diffraction gratings and prisms . . . . . . . . . . . . . . . . . . . . . . . . . . 44 2.2 Spectroscopy and atmospheric transparency . . . . . . . . . . . . . . . . . . . 46 2.3 A simple application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 2.4 Spectroscopy for asteroids . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 2.4.1 Reflectance versus emission . . . . . . . . . . . . . . . . . . . . . . . 50 2.4.2 Spectral features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 II TECHNIQUES FOR ASTEROID SPECTROSCOPY 55 3 Observing techniques 57 3.1 IRTF Telescope and the SpeX instrument . . . . . . . . . . . . . . . . . . . . 57 3.2 Planning the observations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 3.3 Data reduction procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 4 Spectral analysis techniques 65 4.1 Interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 4.1.1 Taxonomy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 4.1.2 Spectral comparison - Comparative planetology . . . . . . . . . . . . . 68 4.1.3 Space weathering effects . . . . . . . . . . . . . . . . . . . . . . . . . 70 4.1.4 Band parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 4.2 Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 4.2.1 Taxonomic classification . . . . . . . . . . . . . . . . . . . . . . . . . 72 4.2.2 Curve matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
- Page 1 and 2: OBSERVATOIRE DE PARIS ÉCOLE DOCTOR
- Page 3 and 4: OBSERVATOIRE DE PARIS ÉCOLE DOCTOR
- Page 5 and 6: OBSERVATOIRE DE PARIS ÉCOLE DOCTOR
- Page 7 and 8: tel-00785991, version 1 - 7 Feb 201
- Page 9 and 10: Résumé: L’objectif fondamental
- Page 11 and 12: tel-00785991, version 1 - 7 Feb 201
- Page 13 and 14: Acknowledgements tel-00785991, vers
- Page 15: Dedicated to mygrandfather, IosifPo
- Page 19 and 20: 7.4.2 (3623) Chaplin . . . . . . .
- Page 21 and 22: List of Tables 2.1 The emission lin
- Page 23 and 24: List of Figures 1.1 A field obtaine
- Page 25 and 26: 5.8 Asteroid spectra and the best t
- Page 27 and 28: tel-00785991, version 1 - 7 Feb 201
- Page 29 and 30: tel-00785991, version 1 - 7 Feb 201
- Page 31 and 32: 1 Why asteroids? tel-00785991, vers
- Page 33 and 34: CHAPTER 1. WHY ASTEROIDS? 33 tel-00
- Page 35 and 36: CHAPTER 1. WHY ASTEROIDS? 35 tel-00
- Page 37 and 38: CHAPTER 1. WHY ASTEROIDS? 37 tel-00
- Page 39 and 40: CHAPTER 1. WHY ASTEROIDS? 39 the fi
- Page 41 and 42: tel-00785991, version 1 - 7 Feb 201
- Page 43 and 44: 2 Why spectroscopy? spectrum. By ca
- Page 45 and 46: CHAPTER 2. WHY SPECTROSCOPY? 45 0.4
- Page 47 and 48: CHAPTER 2. WHY SPECTROSCOPY? 47 The
- Page 49 and 50: CHAPTER 2. WHY SPECTROSCOPY? 49 0.6
- Page 51 and 52: CHAPTER 2. WHY SPECTROSCOPY? 51 −
- Page 53 and 54: CHAPTER 2. WHY SPECTROSCOPY? 53 tel
- Page 55 and 56: tel-00785991, version 1 - 7 Feb 201
- Page 57 and 58: 3 Observing techniques tel-00785991
- Page 59 and 60: CHAPTER 3. OBSERVING TECHNIQUES 59
- Page 61 and 62: CHAPTER 3. OBSERVING TECHNIQUES 61
- Page 63 and 64: CHAPTER 3. OBSERVING TECHNIQUES 63
- Page 65 and 66: 4 Spectral analysis techniques tel-
Contents<br />
Tables 22<br />
Figures 27<br />
I INTRODUCTION 29<br />
tel-00785991, version 1 - 7 Feb 2013<br />
1 Why asteroids? 31<br />
1.1 The place of asteroids in the structure of the Solar System . . . . . . . . . . . . 31<br />
1.2 The Discovery Of Asteroids . . . . . . . . . . . . . . . . . . . . . . . . . . . 33<br />
1.3 Distribution and diversity of asteroids . . . . . . . . . . . . . . . . . . . . . . 35<br />
1.4 Asteroid brightness and albedo . . . . . . . . . . . . . . . . . . . . . . . . . . 38<br />
1.5 My contribution to asteroids discovery . . . . . . . . . . . . . . . . . . . . . . 38<br />
2 Why spectroscopy? 43<br />
2.1 Diffraction gratings and prisms . . . . . . . . . . . . . . . . . . . . . . . . . . 44<br />
2.2 Spectroscopy and atmospheric transparency . . . . . . . . . . . . . . . . . . . 46<br />
2.3 A simple application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47<br />
2.4 Spectroscopy for asteroids . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50<br />
2.4.1 Reflectance versus emission . . . . . . . . . . . . . . . . . . . . . . . 50<br />
2.4.2 Spectral features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52<br />
II TECHNIQUES FOR ASTEROID SPECTROSCOPY 55<br />
3 Observing techniques 57<br />
3.1 IRTF Telescope and the SpeX instrument . . . . . . . . . . . . . . . . . . . . 57<br />
3.2 Planning the observations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58<br />
3.3 Data reduction procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59<br />
4 Spectral analysis techniques 65<br />
4.1 Interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65<br />
4.1.1 Taxonomy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65<br />
4.1.2 Spectral comparison - Comparative planetology . . . . . . . . . . . . . 68<br />
4.1.3 Space weathering effects . . . . . . . . . . . . . . . . . . . . . . . . . 70<br />
4.1.4 Band parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71<br />
4.2 Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72<br />
4.2.1 Taxonomic classification . . . . . . . . . . . . . . . . . . . . . . . . . 72<br />
4.2.2 Curve matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Change language