Reddish / Ter Haar Stellar Formation

International Series in Natural Philosophy, Volume 97
1. Auflage 2013
ISBN: 978-1-4831-3955-5
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 300 Seiten, Web PDF

Stellar Formation focuses on the properties, distributions, characteristics, and formation of stars and galaxies. The manuscript first offers information on locations of star formation, as well as the distribution of interstellar gas, clouds, and globules; spatial relationships between young stars and interstellar matter; and distribution of young stars. The book also tackles frequency distribution of stellar masses and aggregates of stars. The text ponders on the frequency distribution of cloud masses, rate and environment of star formation, and cloud structure in the interstellar gas. The publication also examines the fragmentation of clouds into protostars and the frequency distribution of protostar masses, rate of formation of stars, and evolution of galaxies. Discussions focus on random fragmentation, gravitational turbulence, and fragmentation induced by molecule formation. The manuscript is a vital reference for scientists and readers interested in stellar formation.

Autoren/Hrsg.

Reddish, V C

Ter Haar, D.

Inhaltsverzeichnis

1;Front Cover;1
2;Stellar Formation;4
3;Copyright Page;5
4;Table of Contents;6
6;PART 1: DATA;14
6.1;Chapter 1. INTRODUCTION;16
6.2;Chapter 2. LOCATIONS OF STAR FORMATION;24
6.2.1;2.01 The Distribution of Young Stars;25
6.2.2;2.02 The Distribution of Interstellar Gas, Clouds and Globules;44
6.2.3;2.03 Spatial Relationships between Young Stars and Interstellar Matter;50
6.3;Chapter 3. THE FREQUENCY DISTRIBUTION OF STELLAR MASSES;61
6.3.1;3.01 The Luminosity Function ø (M );61
6.3.2;3.02 The Initial Luminosity Function . (Mv);63
6.3.3;3.03 The Initial Mass-Luminosity Relation;70
6.3.4;3.04 The Initial Mass Function;73
6.4;Chapter 4. THE FREQUENCY DISTRIBUTION OF THE MASSES OF AGGREGATES OF STARS;82
6.4.1;TABLE 4.01 THE TOTAL MASSES OF THE AGGREGATES RELATIVE TO THE MASS OF TRUMPLER 1;84
6.4.2;TABLE 4.02 THE FREQUENCY DISTRIBUTION OF THE MASSES OF AGGREGATES OF STARS;86
6.5;Chapter 5. THE FREQUENCY DISTRIBUTION OF CLOUD MASSES;89
6.5.1;5.01 Interstellar Call Absorption Lines;89
6.5.2;5.02 21 cm Hydrogen Line Emission;92
6.5.3;5.03 Dust Clouds;93
6.6;Chapter 6. THE RATE OF STAR FORMATION;98
6.6.1;6.01 Some Analytical Relationships;99
6.6.3;6.03 Dependence of the Rate of Star Formation on Gas Density;106
6.7;Chapter 7. THE ENVIRONMENT OF STAR FORMATION;109
6.7.1;7.01 Molecular Hydrogen in the Galaxy;109
6.7.2;7.02 Interstellar and Circumstellar Obscuration;117
6.7.3;7.03 Temperatures in Pre-stellar Clouds;121
6.7.4;7.04 Densities in Pre-stellar Clouds;122
6.7.5;7.05 Interstellar Magnetic Fields;124
6.7.6;7.06 Motions of the Interstellar Gas;125
6.7.7;7.07 Element Abundances in the Interstellar Gas;131
6.7.8;7.08 Element Abundances in the Stars;135
7;PART 2: THEORY;144
7.1;Chapter 8. CLOUD STRUCTURE IN THE INTERSTELLAR GAS;146
7.1.1;8.01 The Maintenance of a Cloud Structure;146
7.1.2;8.02 The Generation of a Cloud Structure;157
7.2;Chapter 9. THE ORDERING OF CLOUDS INTO SPIRAL ARMS;168
7.2.1;9.01 The Maintenance of Spiral Density Waves;170
7.2.2;9.02 The Origin of Spiral Density Waves;181
7.2.3;9.03 Ejection from Galactic Nuclei;183
7.2.4;9.04 Mass Arms;184
7.2.5;9.05 Spiral Arms in Relation to Star Formation;188
7.3;Chapter 10. CONDITIONS FOR CONTRACTION OF CLOUDS;190
7.4;Chapter 11.THE FRAGMENTATION OF CLOUDS INTO PROTOSTARS AND THE FREQUENCY DISTRIBUTION OF PROTOSTAR MASSES;199
7.4.1;11.01 Introduction;199
7.4.2;11.02 Random Fragmentation;201
7.4.3;11,03 Hierarchicha1 Fragmentation;208
7.4.4;11.04 Fragmentation Induced by Molecule Formation;211
7.4.5;11.05 Other Theories;228
7.4.6;11.06 Summary;229
7.5;Chapter 12. THE RATE OF FORMATION OF STARS;231
7.5.1;12.01 Gravitational Turbulence;232
7.5.2;12.02 Molecule Formation;233
7.6;Chapter 13. THE EVOLUTION OF GALAXIES;238
7.6.1;13.01 Star Formation in the Proto-galaxy; Controlling Influences of Grains and Molecules;239
7.6.2;13.02 Model Calculations;250
7.6.3;13.03 Calculations with K = 1.3 x 10 -17 s-1;252
7.6.4;13.040 Overshoot in the Rate of Star Formation;270
7.6.5;13.05 Other Models and Analyses;274
7.6.6;13.06 Conclusion;281
8;REFERENCES;283
9;SUBJECT INDEX;299