White dwarf atmospheres and circumstellar environments:
Gespeichert in:
| Weitere Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Weinheim
Wiley-VCH
2011
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XV, 227 S. Ill., graph. Darst. |
| ISBN: | 9783527410316 9783527636570 |
Internformat
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Datensatz im Suchindex
| _version_ | 1804143904517259264 |
|---|---|
| adam_text | IMAGE 1
VII
CONTENTS
PREFACE XI
LIST OF CONTRIBUTORS XV
1 HOT WHITE DWARFS 1
EDWARD M. SION
1.1 INTRODUCTION 1
1.2 REMARKS ON THE SPECTROSCOPIC CLASSIFICATION OF HOT WHITE DWARFS 2
1.3 THE HOT DA STARS 6
1.3.1 DAO WHITE DWARFS 9 1.4 THE PG1159 STARS 11
1.5 DO WHITE DWARFS 14
1.6 DB WHITE DWARFS 17
1.6.1 DBA WHITE DWARFS 18 1.7 HOT DQ WHITE DWARFS 19
1.8 CONCLUSION 20
REFERENCES 21
2 COOL WHITE DWARFS 25
MUKREMIN KILIC
2.1 WHITE DWARF COSMOCHRONOLOGY 25 2.2 COOL WHITE DWARF ATMOSPHERES 29
2.2.1 COLLISION INDUCED ABSORPTION 29 2.2.2 THE MISSING OPACITY SOURCE
IN THE BLUE: LYMAN-A ABSORPTION 31 2.2.3 MODEL ATMOSPHERES VERSUS
OBSERVATIONS 32 2.3 IDENTIFICATION OF LARGE SAMPLES OF COOL WHITE DWARFS
34 2.3.1 PHOTOMETRIC SELECTION 34 2.3.2 PROPER MOTION SELECTION 35 2.4
OBSERVATIONAL PROPERTIES OF COOL WHITE DWARFS 37 2.4.1 COLOR-COLOR
DIAGRAMS 37
2.4.2 PURE HYDROGEN AND PURE HELIUM ATMOSPHERE WHITE DWARFS 38 2.4.3
MIXED H/HE ATMOSPHERE WHITE DWARFS 40 2.4.4 ULTRACOOL (OR
INFRARED-FAINT) WHITE DWARFS 41 2.5 SPECTRAL EVOLUTION OF COOL WHITE
DWARFS 42
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1010591762
DIGITALISIERT DURCH
IMAGE 2
VIII CONTENTS
2.6 AGES FOR INDIVIDUAL WHITE DWARFS 44
2.7 THE WHITE DWARF LUMINOSITY FUNCTION 46 2.8 HALO WHITE DWARFS 48
2.9 CONCLUSIONS AND FUTURE PROSPECTS 50 REFERENCES 51
3 STARS WITH UNUSUAL COMPOSITIONS: CARBON AND OXYGEN IN COOL WHITE
DWARFS 53 PATRICK DUFOUR 3.1 INTRODUCTION 53
3.2 DQ WHITE DWARFS 54
3.2.1 HISTORICAL INTRODUCTION AND GENERAL PROPERTIES 54 3.2.2 FORMATION
MECHANISM 59 3.2.3 RELATION BETWEEN CARBON ABUNDANCE AND TEMPERATURE: AN
OVERVIEW 61
3.2.4 DQ WHITE DWARFS WITH OXYGEN 64 3.2.5 THE PECULIAR ( C 2 H ?) DQ
WHITE DWARFS 65 3.3 CARBON AND OXYGEN IN DBQ WHITE DWARFS 70 3.4 HOT DQ
WHITE DWARFS 72
3.4.1 HISTORICAL INTRODUCTION AND GENERAL PROPERTIES 72 3.4.2 MAGNETISM
76
3.4.3 OXYGEN 78
3.4.4 PULSATIONS 78
3.4.5 FORMATION AND ORIGIN 81 3.4.6 CONCLUDING REMARKS ON THE HOT DQ
STARS 83 3.5 CONCLUSION 84
REFERENCES 87
4 PLANETS ORBITING WHITE DWARFS 89 ROSANNE DI STEFANO 4.1 INTRODUCTION
89
4.2 EXPECTATIONS 92
4.3 DETECTING RADIATION FROM THE PLANETS 94 4.4 EVIDENCE FOR MINOR
PLANETS 97 4.4.1 SURVIVABILITY 97 4.4.2 METAL ENRICHMENT AND DISKS 100
4.4.3 TRANSITS OF ASTEROIDS 102 4.5 TIMING 102
4.6 MESOLENSING 105
4.6.1 GRAVITATIONAL LENSING BASICS 105 4.6.2 NEARBY LENSES 107 4.6.3
PLANET DETECTION VIA LENSING 108 4.6.4 IDENTIFYING WHITE DWARFS IN THE
LENS SYSTEM 109 4.7 TRANSITS 111
4.7.1 BASICS 111
4.7.2 SUPERWASP 111
IMAGE 3
CONTENTS IX
4.7.3 WIDE-FIELD MONITORING 112
4.8 PROSPECTS FOR THE FUTURE 112
REFERENCES 113
5 WHITE DWARF CIRCUMSTELLAR DISKS: OBSERVATIONS 117 JAY FARIHI 5.1
INTRODUCTION 117
5.2 HISTORY AND BACKGROUND 118 5.2.1 EARLY SEARCHES 118 5.2.2 THE
DISCOVERY OF INFRARED EXCESS FROM G29-38 118
5.2.3 THE POLLUTED NATURE OF METAL-RICH WHITE DWARFS 120 5.2.4
INTERSTELLAR OR CIRCUMSTELLAR MATTER 122 5.2.5 G29-38 AND THE ASTEROID
ACCRETION MODEL 123 5.3 PRE-SPITZER AND GROUND-BASED OBSERVATIONS 124
5.3.1 PHOTOMETRIC SEARCHES FOR NEAR-INFRARED EXCESS 124 5.3.2
METAL-POLLUTED WHITE DWARF DISCOVERIES 125 5.3.3 THE SPECTACULAR CASE OF
GD 362 126 5.3.4 SPECTROSCOPIC SEARCHES FOR NEAR-INFRARED EXCESS 127
5.3.5 SPECTROSCOPY AT LONGER WAVELENGTHS 129 5.4 THE INITIAL IMPACT OF
SPITZER 129 5.4.1 INFRARED CAPABILITIES OF SPITZER 129
5.4.2 FIRST RESULTS 130 5.4.3 THE FIRST SPITZER SURVEYS OF WHITE DWARFS
134 5.5 THE NEXT WAVE OF DISK DISCOVERIES 138 5.5.1 THE SECOND CLASS OF
POLLUTED WHITE DWARFS 138 5.5.2 A HIGHLY SUCCESSFUL SPITZER SEARCH 139
5.5.3 THE DETECTION OF GASEOUS DEBRIS IN A DISK 141 5.5.4 DUST
DEFICIENCY OF DA2 STARS - COLLISIONS? 142 5.5.5 EXPANDING SEARCHES TO
THE DBZ STARS 143
5.5.6 ADDITIONAL DISKS WITH GASEOUS (AND SOLID) DEBRIS 145 5.6 STUDIES
AND STATISTICS 147
5.6.1 SPECTROSCOPIC CONFIRMATION OF ROCKY CIRCUMSTELLAR DEBRIS 147 5.6.2
FIRST STATISTICS AND THE EMERGING PICTURE 151 5.6.3 DUST-DEFICIENCY IN
DAZ STARS - NARROW RINGS? 153 5.6.4 THE COMPOSITION AND MASSES OF
ASTEROIDS AROUND GD 362 AND
GD40 158
5.6.5 EVIDENCE FOR WATER IN DEBRIS ORBITING WHITE DWARFS 161 5.6.6 A
LAST LOOK AT THE INTERSTELLAR ACCRETION HYPOTHESIS 162 5.7 RELATED
OBJECTS 264
5.7.1 WHITE DWARFS POLLUTED BY COMPANIONS? 164 5.7.2 DUST IN THE HELIX?
165 5.8 OUTLOOK FOR THE PRESENT AND NEAR FUTURE 166 REFERENCES 168
IMAGE 4
X CONTENTS
6 THE ORIGIN AND EVOLUTION OF WHITE DWARF DUST DISKS 173
JOHN H. DEBES
6.1 INTRODUCTION 173
6.2 ORDERS OF MAGNITUDE AROUND A WHITE DWARF 174 6.3 STRUCTURE AND
EVOLUTION OF A WHITE DWARF DUST DISK 178 6.3.1 OPTICALLY THIN DUST
DISKS? 182 6.3.2 SUBSEQUENT EVOLUTION OF THE DUST DISK 182 6.4 ORIGINS
OF WHITE DWARF DUST DISKS 185
6.4.1 THE UNSTABLE PLANETARY PERTURBATION MODEL 185 6.4.2 DUST AND
ACCRETION, OR JUST ACCRETION? 190 6.4.3 THE MEAN MOTION PERTURBATION
MODEL 192 6.4.4 OBSERVABILITY OF RING PROGENITORS 196
6.5 CONCLUSION 198
REFERENCES 200
7 PLANETARY NEBULAE AROUND WHITE DWARFS: REVELATIONS FROM THE INFRARED
203 YOU-HUA CHU 7. 1 INTRODUCTION: EXPECTATIONS OF NEBULAE AROUND WHITE
DWARFS 203 7.2 PLANETARY NEBULAE AROUND WHITE DWARFS 204 7.3
HIGH-EXCITATION NEBULAE AROUND HOT WHITE DWARFS 208
7.4 MID-INFRARED EMISSION FROM CIRCUMSTELLAR NEBULAE OF WHITE DWARFS 209
7.5 CONCLUSION 212
REFERENCES 225
INDEX 217
OBJECT INDEX 223
|
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| spelling | White dwarf atmospheres and circumstellar environments ed. by D. W. Hoard Weinheim Wiley-VCH 2011 XV, 227 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Interstellare Materie (DE-588)4162140-2 gnd rswk-swf Weißer Zwerg (DE-588)4189501-0 gnd rswk-swf (DE-588)4143413-4 Aufsatzsammlung gnd-content Weißer Zwerg (DE-588)4189501-0 s Interstellare Materie (DE-588)4162140-2 s DE-604 Hoard, Donald W. (DE-588)1016161816 edt Erscheint auch als Online-Ausgabe, EPUB 978-3-527-63658-7 Erscheint auch als Online-Ausgabe, MOBI 978-3-527-63660-0 Erscheint auch als Online-Ausgabe, PDF 978-3-527-63659-4 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=021190264&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | White dwarf atmospheres and circumstellar environments Interstellare Materie (DE-588)4162140-2 gnd Weißer Zwerg (DE-588)4189501-0 gnd |
| subject_GND | (DE-588)4162140-2 (DE-588)4189501-0 (DE-588)4143413-4 |
| title | White dwarf atmospheres and circumstellar environments |
| title_auth | White dwarf atmospheres and circumstellar environments |
| title_exact_search | White dwarf atmospheres and circumstellar environments |
| title_full | White dwarf atmospheres and circumstellar environments ed. by D. W. Hoard |
| title_fullStr | White dwarf atmospheres and circumstellar environments ed. by D. W. Hoard |
| title_full_unstemmed | White dwarf atmospheres and circumstellar environments ed. by D. W. Hoard |
| title_short | White dwarf atmospheres and circumstellar environments |
| title_sort | white dwarf atmospheres and circumstellar environments |
| topic | Interstellare Materie (DE-588)4162140-2 gnd Weißer Zwerg (DE-588)4189501-0 gnd |
| topic_facet | Interstellare Materie Weißer Zwerg Aufsatzsammlung |
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