Made-to-measure particle models of intermediate-luminosity elliptical galaxies: regularization, parameter estimation, and the dark halo of NGC 4494
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | Volltext http://d-nb.info/1027669425/34 https://nbn-resolving.org/urn:nbn:de:bvb:19-149466 Inhaltsverzeichnis |
| Beschreibung: | 156 S. Ill. |
Internformat
MARC
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| 245 | 1 | 0 | |a Made-to-measure particle models of intermediate-luminosity elliptical galaxies |b regularization, parameter estimation, and the dark halo of NGC 4494 |c Lucia Morganti |
| 264 | 1 | |c 2012 | |
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Datensatz im Suchindex
| _version_ | 1804149984285687808 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
1 INTRODUCTION 1
1.1 GALAXIES - AN OVERVIEW 1
1.2 GALAXY FORMATION IN THE COSMOLOGICAL SCENARIO 5
1.3 OBSERVATIONAL PROPERTIES OF ELLIPTICAL GALAXIES 10
1.3.1 OPTICAL-PHOTOMETRY 11
1.3.2 KINEMATICS OF ELLIPTICALS 14
1.3.3 KINEMATICS FROM DISCRETE TRACERS 16
1.3.4 SCALING RELATIONS 18
1.4 DYNAMICS OF ELLIPTICAL GALAXIES 20
1.4.1 STELLAR ORBITS IN ELLIPTICAL GALAXIES 21
1.4.2 DYNAMICAL EQUILIBRIA OF ELLIPTICALS 22
1.4.3 DYNAMICAL MODELS 24
1.5 THE OUTER HALOS OF ELLIPTICAL GALAXIES 29
1.5.1 DARK HALOS 29
1.5.2 STELLAR HALOS AND CONSTRAINTS ON GALAXY FORMATION 32
1.6 AIMS AND STRUCTURE OF THIS THESIS 33
2 REGULARIZING MADE-TO-MEASURE PARTICLE MODELS O F GALAXIES 3 7
2.1 INTRODUCTION 38
2.2 REGULARIZATION OF PARTICLE MODELS 40
2.2.1 THE X 2 M2M TECHNIQUE TO MODEL OBSERVATIONAL DATA 41
2.2.2 ISSUES WITH STANDARD WEIGHT ENTROPY REGULARIZATION 43
2.2.3 ALTERNATIVE REGULARIZATION BASED ON MOVING PRIORS 44
2.3 TARGET MODELS AND OBSERVABLES 46
2.3.1 SPHERICAL ANISOTROPIC HERNQUIST TARGETS 47
HTTP://D-NB.INFO/1028404476
IMAGE 2
2.3.2 LUMINOSITY OBSERVABLES 48
2.3.3 KINEMATIC OBSERVABLES 49
2.4 CONVERGENCE TO A THEORETICALLY UNIQUE SOLUTION 50
2.4.1 MODELLING PROCEDURE AND DIAGNOSTIC QUANTITIES 51
2.4.2 CALIBRATING REGULARIZATION 53
2.4.3 VARYING THE INITIAL PARTICLE MODEL 59
2.5 EFFECTS OF IMPERFECT DATA 62
2.5.1 TRUNCATED TARGET AND REALISTIC KINEMATIC ERRORS 62
2.5.2 FINITE DATA FOR AN INFINITE TARGET 64
2.6 REGULARIZED PARTICLE MODELS FOR NGC 4697 AND NGC 3379 67
2.6.1 THE CASE OF NGC 4697 AND ITS HALO 68
2.6.2 THE CASE OF NGC 3379 AND ITS HALO 72
2.7 DISCUSSION AND CONCLUSIONS 73
3 ELLIPTICAL GALAXIES WITH RAPIDLY DECREASING VELOCITY DISPERSION
PROFILES:
NMAGIC MODELS AND DARK HALO PARAMETER ESTIMATES FOR N G C 4494 75
3.1 INTRODUCTION 76
3.2 OBSERVATIONAL DATA 80
3.2.1 PHOTOMETRIC DATA AND DEPROJECTION 80
3.2.2 KINEMATIC DATA 81
3.3 MODELLING DATA WITH NMAGIC 86
3.3.1 NMAGIC 87
3.3.2 THE GRAVITATIONAL POTENTIAL 88
3.3.3 THE INITIAL PARTICLE MODEL 88
3.3.4 PHOTOMETRIC AND KINEMATIC OBSERVABLES FOR THE MODELLING 89
3.3.5 MODELLING PROCEDURE 90
3.4 PARAMETER ESTIMATION: HOW WELL CAN THE DARK MATTER HALO BE
RECOVERED? . . 92
3.4.1 AN NGC 4494-LIKE GALAXY AND ITS OBSERVABLES 93
3.4.2 CALIBRATING REGULARIZATION 95
3.4.3 RECOVERY OF THE DARK HALO PARAMETERS OF AN NGC 4494-LIKE GALAXY .
. 95
3.4.4 PARAMETER ESTIMATION FOR THE DARK MATTER HALO: CONFIDENCE LEVELS .
. . 98
3.4.5 SUMMARY 102
IMAGE 3
3.5 DYNAMICAL MODELS OF NGC 4494 103
3.5.1 MODEL FITS TO THE OBSERVATIONAL DATA 105
3.5.2 THE INTERNAL KINEMATICS OF NGC 4494 108
3.5.3 THE INCLINATION OF NGC 4494 110
3.6 DISCUSSION 112
3.6.1 CONFIDENCE LEVELS FOR PARAMETER ESTIMATION WITH NMAGIC 112
3.6.2 DYNAMICAL MODELS FOR NGC 4494: COMPARISON WITH THE LITERATURE . .
. 114
3.6.3 THE WIDER CONTEXT: INTERMEDIATE-LUMINOSITY ELLIPTICALS 116
3.7 CONCLUSIONS 118
4 CONCLUSIONS 121
4.1 MADE-TO-MEASURE DYNAMICAL MODELS OF GALAXIES: TECHNICAL IMPROVEMENTS
. . 122
4.2 INTERMEDIATE-LUMINOSITY ELLIPTICAL GALAXIES WITH RAPIDLY FALLING
VELOCITY
DISPERSION PROFILES 126
4.3 OUTLOOK 131
5 BIBLIOGRAPHY 133
6 ACKNOWLEDGMENTS 155
|
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| physical | 156 S. Ill. |
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| spelling | Morganti, Lucia 1984- Verfasser (DE-588)1028403887 aut Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 Lucia Morganti 2012 156 S. Ill. txt rdacontent n rdamedia nc rdacarrier München, Univ., Diss., 2012 (DE-588)4113937-9 Hochschulschrift gnd-content Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:19-149466 http://edoc.ub.uni-muenchen.de/14946/ Verlag kostenfrei Volltext http://d-nb.info/1027669425/34 Langzeitarchivierung Nationalbibliothek https://nbn-resolving.org/urn:nbn:de:bvb:19-149466 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025668713&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Morganti, Lucia 1984- Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 |
| subject_GND | (DE-588)4113937-9 |
| title | Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 |
| title_auth | Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 |
| title_exact_search | Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 |
| title_full | Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 Lucia Morganti |
| title_fullStr | Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 Lucia Morganti |
| title_full_unstemmed | Made-to-measure particle models of intermediate-luminosity elliptical galaxies regularization, parameter estimation, and the dark halo of NGC 4494 Lucia Morganti |
| title_short | Made-to-measure particle models of intermediate-luminosity elliptical galaxies |
| title_sort | made to measure particle models of intermediate luminosity elliptical galaxies regularization parameter estimation and the dark halo of ngc 4494 |
| title_sub | regularization, parameter estimation, and the dark halo of NGC 4494 |
| topic_facet | Hochschulschrift |
| url | http://edoc.ub.uni-muenchen.de/14946/ http://d-nb.info/1027669425/34 https://nbn-resolving.org/urn:nbn:de:bvb:19-149466 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025668713&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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