Radio observations of high mass star forming regions: hot cores and photon dominated regions
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | German |
| Veröffentlicht: |
1997
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | X, 150 S. Ill., graph. Darst. |
Internformat
MARC
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| 100 | 1 | |a Wyrowski, Friedrich |d 1967- |e Verfasser |0 (DE-588)120392461 |4 aut | |
| 245 | 1 | 0 | |a Radio observations of high mass star forming regions |b hot cores and photon dominated regions |c vorgelegt von Friedrich Wyrowski |
| 264 | 1 | |c 1997 | |
| 300 | |a X, 150 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 502 | |a Köln, Univ., Diss., 1997 | ||
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| 856 | 4 | 2 | |m DNB Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008224539&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 943 | 1 | |a oai:aleph.bib-bvb.de:BVB01-008224539 | |
Datensatz im Suchindex
| _version_ | 1807229734632816640 |
|---|---|
| adam_text |
CONTENTS
1
INTRODUCTION
1
1.1
ULTRACOMPACT
HN
REGIONS
.
2
1.2
HOT
CORES
.
'
.
3
1.3
PHOTON
DOMINATED
REGIONS
.
4
1.4
OUTLINE
.
5
I
HOT
CORES
7
2
C
17
O
TOWARDS
HOT
CORES
9
2.1
INTRODUCTION
.
9
2.2
KOSMA
OBSERVATIONS
.
10
2.3
ESTIMATION
OF
SOURCE
SIZES
.
13
2.4
TEMPERATURES
FROM
BOLTZMANN
PLOTS
.
14
2.5
PHYSICAL
PROPERTIES
OF
THE
MOLECULAR
CORES
.
17
2.6
CONCLUSIONS
.
20
3
15
NH
3
IN
THE
HOT
CORE
ASSOCIATED
WITH
G10.47+0.03
22
3.1
INTRODUCTION
.
22
3.2
100-M
OBSERVATIONS
OF
16
NH
3
.
23
3.3
RESULTS
.
23
3.4
ANALYSIS
.
25
VI
3.5
STATISTICAL
EQUILIBRIUM
RESULTS
.
26
3.5.1
KINETIC
TEMPERATURE
ESTIMATES
.
27
3.5.2
THE
EXCITATION
OF
NON-METASTABLE
LEVELS
OF
16
NH
3
.
28
3.6
DISCUSSION
.
29
3.7
CONCLUSIONS
.
31
4
PROBING
THE
IR-FIELD
OF
HOT
CORES
33
4.1
INTRODUCTION
.
33
4.2
OBSERVATIONS
.
34
4.3
VIBRATIONALLY
EXCITED
CYANOACETYLENE
.
36
4.3.1
FREQUENCIES
OF
VIBRATIONALLY
EXCITED
STATES
.
36
4.3.2
THE
WHOLE
SAMPLE
.
39
4.4
HC
3
N
IN
G10.47+0.03
.
40
4.4.1
THE
IDENTIFICATIONS
.
40
4.4.2
THE
LEVEL
POPULATION
.
45
4.4.3
THE
EXCITATION
OF
THE
LINES
.
49
4.5
OTHER
RADIATIVELY
EXCITED
MOLECULES
.
51
4.5.1
VIBRATIONALLY
EXCITED
HYDROGEN
CYANIDE
.
51
4.5.2
VIBRATIONALLY
EXCITED
AMMONIA
.
53
4.5.3
ISOCYANIC
ACID
.
53
4.5.4
VIBRATIONALLY
EXCITED
VINYL
CYANIDE
.
55
4.6
CHARACTERISTICS
OF
THE
IR
SOURCE
.
56
4.7
CONCLUSIONS
.
57
5
THE
CHEMICAL
STATE
OF
HOT
CORES
59
5.1
INTRODUCTION
.
'
.
59
5.2
DETERMINATION
OF
MOLECULAR
ABUNDANCES
.
61
5.3
DISCUSSION
OF
THE
OBSERVED
MOLECULAR
SPECIES
.
62
VII
5.3.1
CH3CH2CN
ETHYL
CYANIDE
.
62
5.3.2
CH
2
CHCN
-
VINYL
CYANIDE
.
65
5.3.3
HCOOCH3
-
METHYL
FORMATE
.
66
5.3.4
CH3OCH3
-
DIMETHYLETHER
.
67
5.3.5
CH
3
CH
2
OH
-
ETHANOL
.
68
5.3.6
CH3CHO
-
ACETALDEHYDE
.
69
5.3.7
DEUTERATED
MOLECULES
.
71
5.4
THE
CHEMICAL
AGE
OF
HOT
CORES
.
72
5.5
CONCLUSIONS
.
74
6
AN
INTERFEROMETER
STUDY
OF
GAS
AND
DUST
IN
W3(OH)
76
6.1
INTRODUCTION
.
76
6.2
OBSERVATIONS
AND
DATA
REDUCTION
.
78
6.3
THE
MILLIMETER
CONTINUUM
EMISSION
.
79
6.3.1
RESULTS
.
79
6.3.2
THE
RADIO
CONTINUUM
SPECTRUM
.
80
6.3.3
MASS
ESTIMATES
FROM
THE
DUST
EMISSION
.
82
6.4
C
1T
O
EMISSION
.
82
6.4.1
GAS
MASS
DISTRIBUTION
.
83
6.4.2
HOT
CORE
MASS
.
84
6.5
COMPLEX
MOLECULES
IN
W3(0H)
.
85
6.5.1
IDENTIFICATION
AND
MORPHOLOGY
.
85
6.5.2
ANALYSIS
.
88
6.6
THE
RELATION
BETWEEN
THERMAL
AND
MASERING
GAS
.
93
6.7
CONCLUSIONS
.
95
VIII
II
PHOTON
DOMINATED
REGIONS
97
7
THE
CARBON
RECOMBINATION
LINE
IN
SELECTED
STAR
FORMING
REGIONS
99
7.1
INTRODUCTION
.
99
7.2
HISTORY
AND
THEORY
.
99
7.3
IONIZED
CARBON
IN
MODELS
OF
PDRS
.
102
7.4
OBSERVATIONS
.
103
7.5
RESULTS
AND
DISCUSSION
.
103
7.5.1
S
140
.
103
7.5.2
S
106
.
105
7.5.3
NGC
7023
.
106
7.5.4
DR
21
.
107
7.5.5
IC
63
AND
RMC
.
107
7.6
CONCLUSIONS
.
108
8
A
DETAILED
STUDY
OF
THE
PDR
ASSOCIATED
WITH
NGC
2023
110
8.1
INTRODUCTION
.
110
8.2
OBSERVATIONS
.
112
8.2.1
C91O
100-M
OBSERVATIONS
.
112
8.2.2
C
18
O
KOSMA
OBSERVATIONS
.
112
8.3
OBSERVATIONAL
RESULTS
.
113
8.3.1
C91A
.
113
8.3.2
C
18
O
.
114
8.3.3
COMPARISON
OF
C91A
WITH
MOLECULAR
TRACERS
IN
NGC
2023
.
116
8.4
PHYSICAL
PARAMETERS
OF
THE
NGC
2023
PDR
.
117
8.4.1
FACE-ON
HOMOGENEOUS
PDR
MODELS
.
119
8.4.2
EDGE-ON
HOMOGENEOUS
MODELS
.
120
8.4.3
CLUMPY
MODELS
.
122
IX
8.4.4
EFFECT
OF
"
INTERSTELLAR
ABUNDANCES
"
ON
INFERRED
DENSITIES
.
125
8.5
CHARACTERISTICS
OF
THE
MOLECULAR
CORE
IN
NGC
2023
.
125
8.6
DISCUSSION
AND
CONCLUSIONS
.
128
9
CARBON
RADIO
RECOMBINATION
LINES
TOWARDS
THE
ORION
NEBULA
131
9.1
INTRODUCTION
.
131
9.2
OBSERVATIONS
.
132
9.2.1
C65A
OBSERVATIONS
OF
ORION
WITH
THE
EFFELSBERG
100-M
TELESCOPE
.
.
.
132
9.2.2
C91A
OBSERVATIONS
OF
THE
ORION
BAR
WITH
THE
VLA
.
132
9.3
OBSERVATIONAL
RESULTS
.
133
9.3.1
MORPHOLOGY
OF
CARBON
RADIO
LINE
EMISSION
.
133
9.3.2
LEVEL
POPULATIONS
IN
THE
C91A
EMITTING
REGION
.
136
9.3.3
COMPARISON
WITH
MOLECULAR
HYDROGEN
EMISSION
.
137
9.3.4
PHYSICAL
PARAMETERS
IN
THE
C91A
EMITTING
REGION
.
138
9.4
CONCLUSIONS
.
138
III
CONCLUSIONS
AND
PROSPECTS
141
A
30-M
LINE
PARAMETERS
145 |
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| genre_facet | Hochschulschrift |
| id | DE-604.BV012142969 |
| illustrated | Illustrated |
| indexdate | 2024-08-13T00:23:00Z |
| institution | BVB |
| language | German |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-008224539 |
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| physical | X, 150 S. Ill., graph. Darst. |
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| spelling | Wyrowski, Friedrich 1967- Verfasser (DE-588)120392461 aut Radio observations of high mass star forming regions hot cores and photon dominated regions vorgelegt von Friedrich Wyrowski 1997 X, 150 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Köln, Univ., Diss., 1997 Massereicher Stern (DE-588)4169052-7 gnd rswk-swf Sternentstehungsgebiet (DE-588)4384871-0 gnd rswk-swf Radioastronomie (DE-588)4048200-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Massereicher Stern (DE-588)4169052-7 s Sternentstehungsgebiet (DE-588)4384871-0 s Radioastronomie (DE-588)4048200-5 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008224539&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Wyrowski, Friedrich 1967- Radio observations of high mass star forming regions hot cores and photon dominated regions Massereicher Stern (DE-588)4169052-7 gnd Sternentstehungsgebiet (DE-588)4384871-0 gnd Radioastronomie (DE-588)4048200-5 gnd |
| subject_GND | (DE-588)4169052-7 (DE-588)4384871-0 (DE-588)4048200-5 (DE-588)4113937-9 |
| title | Radio observations of high mass star forming regions hot cores and photon dominated regions |
| title_auth | Radio observations of high mass star forming regions hot cores and photon dominated regions |
| title_exact_search | Radio observations of high mass star forming regions hot cores and photon dominated regions |
| title_full | Radio observations of high mass star forming regions hot cores and photon dominated regions vorgelegt von Friedrich Wyrowski |
| title_fullStr | Radio observations of high mass star forming regions hot cores and photon dominated regions vorgelegt von Friedrich Wyrowski |
| title_full_unstemmed | Radio observations of high mass star forming regions hot cores and photon dominated regions vorgelegt von Friedrich Wyrowski |
| title_short | Radio observations of high mass star forming regions |
| title_sort | radio observations of high mass star forming regions hot cores and photon dominated regions |
| title_sub | hot cores and photon dominated regions |
| topic | Massereicher Stern (DE-588)4169052-7 gnd Sternentstehungsgebiet (DE-588)4384871-0 gnd Radioastronomie (DE-588)4048200-5 gnd |
| topic_facet | Massereicher Stern Sternentstehungsgebiet Radioastronomie Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008224539&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT wyrowskifriedrich radioobservationsofhighmassstarformingregionshotcoresandphotondominatedregions |