Atomic and molecular gas in the starburst galaxy NGC 4945:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | German |
| Veröffentlicht: |
1995
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Bonn, Univ., Diss., 1995 (Nicht für den Austausch) |
| Beschreibung: | 123 S. Ill., graph. Darst. |
Internformat
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| 100 | 1 | |a Ott, Martin |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Atomic and molecular gas in the starburst galaxy NGC 4945 |c vorgelegt von Martin Ott |
| 264 | 1 | |c 1995 | |
| 300 | |a 123 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
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| 650 | 0 | 7 | |a Einundzwanzig-Zentimeter-Linie |0 (DE-588)4151431-2 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Radioastronomie |0 (DE-588)4048200-5 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Kohlenmonoxid |0 (DE-588)4164521-2 |2 gnd |9 rswk-swf |
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| 943 | 1 | |a oai:aleph.bib-bvb.de:BVB01-007117055 | |
Datensatz im Suchindex
| _version_ | 1812453624357322752 |
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| adam_text |
CONTENTS
1 INTRODUCTION 3
1.1 GAS IN SPIRAL GALAXIES. 3
1.2 NGC 4945, A FASCINATING LABORATORY !. 6
1.2.1 OPTICAL APPEARANCE AND DISTANCE. 6
1.2.2 THE NUCLEAR REGION. 7
1.2.3 THE DISK. 9
1.2.4 THE FIELD AROUND NGC 4945 .~7. 10
1.3 MOTIVATION AND OUTLINE OF THIS STUDY. 11
1.4 SOME USEFUL ASTROPHYSICAL TOOLS. 13
2 A 21 CM STUDY OF NGC 4945 19
2.1 HI LINE AND CONTINUUM OBSERVATIONS. 19
2.1.1 SYNTHESIS OBSERVATIONS. 19
2.1.2 DATA REDUCTION. 22
2.1.3 THE ZERO-SPACING PROBLEM. 25
2.2 RESULTS. 29
2.2.1 CONTINUUM EMISSION AT 21 CM. 29
2.2.2 THE NUCLEAR HI ABSORPTION. 33
2.2.3 THE EXTENDED HI. 36
2.2.4 VELOCITIES OF THE EXTENDED HI. 37
2.2.5 HI SPECTRA TOWARDS CONTINUUM SOURCES NEAR NGC 4945 . 41
2.3 INTERPRETATION OF THE 21 CM DATA. 42
2.3.1 THE NUCLEUS. 42
2.3.2 THE DISK EMISSION . 43
2.3.3 THE SPIRAL STRUCTURE. 46
2.3.4 THE KINEMATICS OF THE HI DISK. 48
3 A CO STUDY OF NGC 4945 59
3.1 OBSERVATIONS AND DATA REDUCTIONS. 59
3.1.1
12CO J-1- 0 OBSERVATIONS . 59
3.1.2
12CO J=2- 1 MEASUREMENTS . 60
3.1.3
12CO J=3-2 DATA. 61
3.2 THE RESULTS OF THE CO MEASUREMENTS. 62
3.2.1 THE CO(L-O) SPECTRA FROM THE OUTER MAJOR AXIS. 62
3.2.2 THE CO(2-L) DATA CUBE. 64
1
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/946641528
3.2.3 THE CENTRAL CO(3-2) EMISSION .
3.3 INTERPRETATION OF THE CO DATA.
3.3.1 CO IN THE NUCLEAR REGION.
3.3.2 CO EMISSION IN THE DISK.
3.3.3 THE KINEMATICS OF THE CO DISK .
72
74
74
77
80
4
A COMPARATIVE NEUTRAL GAS STUDY OF NGC 4945
4.1 NUCLEAR EMISSION AND KINEMATICS.
4.2 DISK EMISSION.
4.3 DISK KINEMATICS.
4.3.1 COMMON ROTATION .
4.3.2 THE MASS AND THE DARK MATTER.
4.3.3 SMALL-SCALE VELOCITY DIFFERENCES.
4.3.4 MODELLING VELOCITY DIFFERENCES.
4.4 GAS DYNAMICS.
4.4.1 THE BAR.
4.4.2 RESONANCES AND GAS FLOW.
4.5 A 3-DIMENSIONAL MODEL FOR NGC 4945 .
4.5.1 EDGE-ON : THE GALACTIC FOUNTAIN . . . .
4.5.2 FACE-ON : THE BARRED SPIRAL .
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104
107
107
107
5 SUMMARY - THE 'BOTTOM LINE'
APPENDIX
A
HI CHANNEL MAPS.
CO(2-L) CHANNEL MAPS .
BIBLIOGRAPHY
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2 |
| any_adam_object | 1 |
| author | Ott, Martin |
| author_facet | Ott, Martin |
| author_role | aut |
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| building | Verbundindex |
| bvnumber | BV010662158 |
| classification_tum | PHY 920d PHY 973d |
| ctrlnum | (OCoLC)632436362 (DE-599)BVBBV010662158 |
| discipline | Physik |
| format | Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| geographic | NGC 4945 (DE-588)4401018-7 gnd |
| geographic_facet | NGC 4945 |
| id | DE-604.BV010662158 |
| illustrated | Illustrated |
| indexdate | 2024-10-09T16:14:29Z |
| institution | BVB |
| language | German |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-007117055 |
| oclc_num | 632436362 |
| open_access_boolean | |
| owner | DE-91 DE-BY-TUM |
| owner_facet | DE-91 DE-BY-TUM |
| physical | 123 S. Ill., graph. Darst. |
| publishDate | 1995 |
| publishDateSearch | 1995 |
| publishDateSort | 1995 |
| record_format | marc |
| spelling | Ott, Martin Verfasser aut Atomic and molecular gas in the starburst galaxy NGC 4945 vorgelegt von Martin Ott 1995 123 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Bonn, Univ., Diss., 1995 (Nicht für den Austausch) Interstellares Gas (DE-588)4162147-5 gnd rswk-swf Wasserstoff (DE-588)4064784-5 gnd rswk-swf Einundzwanzig-Zentimeter-Linie (DE-588)4151431-2 gnd rswk-swf Radioastronomie (DE-588)4048200-5 gnd rswk-swf Kohlenmonoxid (DE-588)4164521-2 gnd rswk-swf NGC 4945 (DE-588)4401018-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content NGC 4945 (DE-588)4401018-7 g Wasserstoff (DE-588)4064784-5 s Kohlenmonoxid (DE-588)4164521-2 s Radioastronomie (DE-588)4048200-5 s Einundzwanzig-Zentimeter-Linie (DE-588)4151431-2 s DE-604 Interstellares Gas (DE-588)4162147-5 s DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=007117055&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Ott, Martin Atomic and molecular gas in the starburst galaxy NGC 4945 Interstellares Gas (DE-588)4162147-5 gnd Wasserstoff (DE-588)4064784-5 gnd Einundzwanzig-Zentimeter-Linie (DE-588)4151431-2 gnd Radioastronomie (DE-588)4048200-5 gnd Kohlenmonoxid (DE-588)4164521-2 gnd |
| subject_GND | (DE-588)4162147-5 (DE-588)4064784-5 (DE-588)4151431-2 (DE-588)4048200-5 (DE-588)4164521-2 (DE-588)4401018-7 (DE-588)4113937-9 |
| title | Atomic and molecular gas in the starburst galaxy NGC 4945 |
| title_auth | Atomic and molecular gas in the starburst galaxy NGC 4945 |
| title_exact_search | Atomic and molecular gas in the starburst galaxy NGC 4945 |
| title_full | Atomic and molecular gas in the starburst galaxy NGC 4945 vorgelegt von Martin Ott |
| title_fullStr | Atomic and molecular gas in the starburst galaxy NGC 4945 vorgelegt von Martin Ott |
| title_full_unstemmed | Atomic and molecular gas in the starburst galaxy NGC 4945 vorgelegt von Martin Ott |
| title_short | Atomic and molecular gas in the starburst galaxy NGC 4945 |
| title_sort | atomic and molecular gas in the starburst galaxy ngc 4945 |
| topic | Interstellares Gas (DE-588)4162147-5 gnd Wasserstoff (DE-588)4064784-5 gnd Einundzwanzig-Zentimeter-Linie (DE-588)4151431-2 gnd Radioastronomie (DE-588)4048200-5 gnd Kohlenmonoxid (DE-588)4164521-2 gnd |
| topic_facet | Interstellares Gas Wasserstoff Einundzwanzig-Zentimeter-Linie Radioastronomie Kohlenmonoxid NGC 4945 Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=007117055&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT ottmartin atomicandmoleculargasinthestarburstgalaxyngc4945 |