Problems in Stellar Atmospheres and Envelopes
Language: English
Published by Springer Berlin Heidelberg, 2012
- Softcover
- New
Seller: AHA-BUCH GmbH, Einbeck, GermanyAHA-BUCH GmbH
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Druck auf Anfrage Neuware - Printed after ordering - InhaltsangabeThe Energy Flux of the Sun A Critical Discussion of Standard Values for the Solar Irradiance.- 1. Introduction.- 2. High Altitude Experiments.- 3. Discussion of the Results.- 4. Results of Measurements in the Far Ultraviolet.- References.- Model Stellar Atmospheres and Heavy Element Abundances.- 1. Introduction.- 2. The Temperature Stratification.- 3. The Gas and Electron Pressures.- 4. The Energy Distribution in the Continuum.- 4.1. The Balmer Discontinuity.- 4.2. The Ultraviolet Continuum.- 5. The Line Absorption.- 5.1. The Total Line Blanketing.- 5.2. The Metallic Line Absorption.- 5.3. Molecular Lines.- 5.4. The Hydrogen Lines.- 6. The UBV Colors.- 7. The Temperature Calibrations.- 8. The Bolometric Correction.- 9. Convection and Metal Abundances.- 9.1. Convective Instability.- 9.2. Convection Velocities, Microturbulence and Chromospheres.- 9.3. Influence of Convection on the Observed Energy Distribution of Stellar Spectra.- References.- Properties and Problems of Helium Stars.- 1. Introduction.- 1.1. Definitions.- 2. General Properties.- 2.1. List of Objects.- 2.2. Distribution on the Sphere and Velocities.- 2.3. H/He Ratio.- 3. Spectrum.- 3.1. Visual Spectrum.- 3.2. UV-Spectrum.- 4. Atmospheric Structure.- 4.1. Model Atmospheres.- 4.2. Synthetic Spectra and Atmospheric Parameters.- 4.3. Non-LTE Effects.- 5. Individual Obj ects.- 5.1. Extreme Helium Stars.- 5.2. Intermediate Helium Stars.- 5.3. O-Subdwarfs.- 6. Abundances.- 7. Evolution of Model Helium Stars and the (g, Teff) -Diagram.- 7.1. Main Sequences.- 7.2. Evolutionary Tracks.- 7.3. Lifetimes.- 8. Empirical (g, Teff) -Diagram.- 8.1. (g, Teff)-Classification and Masses.- 8.2. Observed Objects.- 9. Variability and Atmospheric Motions.- 10. Conclusion.- References.- Abundance Anomalies in Early-Type Stars.- 1. Introduction.- 2. Problems Related to the Determination of Abundance Anomalies.- 2.1. Definition of Abundances.- 2.2. Relative and Normal Abundances.- 2.3. Model Atmospheres of Peculiar Stars Compared to Normal Stars.- 3. The Population I Peculiar B Stars.- 3.1. The Major Groups of the Ap Stars.- 3.2. The Weak-Helium-Line Stars.- 3.3. Relationship of the Weak-Helium-Line Stars to the Silicon and Manganese Stars.- 3.4. Peculiar Early-B Stars.- 4. The CNO Stars.- 4.1. Properties of the CNO Stars.- 4.2. Element Abundances.- 4.3. Nature of the CNO Anomalies.- 5. The Population II B Stars.- 5.1. Classification.- 5.2. Evolutionary Status.- 5.3. Element Abundances.- 5.4. Discussion of the Abundance Anomalies.- 6. On the Origin of the Ap Phenomenon.- 6.1. Nuclear Processes.- 6.2. Non-Nuclear Processes.- 6.3. Removal of Surface Abundance Anomalies.- 6.4. Inferences from the Early-Type Peculiar Stars.- References.- A-Type Horizontal-Branch Stars.- 1. Introduction.- 2. Characteristics of A-Type Atmospheres.- 3. Observational Quantities.- 4. Field Horizontal-Branch Stars.- 5. Horizontal-Branch Stars in Globular Clusters.- 5.1. NGC 6397.- 5.2. NGC 6121 (M4).- 6. Chemical Composition and Mass-Luminosity Relation.- 6.1. Chemical Composition.- 6.2. Mass-Luminosity Ratio.- References.- White Dwarfs: Composition, Mass Budget and Galactic Evolution.- 1. Introduction.- 2. The Atmospheres of White Dwarfs.- 2.1. White Dwarfs with Hydrogen-Rich Atmospheres.- 2.2. White Dwarfs with Hydrogen-Deficient Atmospheres.- 3. Composition of Interiors and Envelopes. White-Dwarf Formation.- 4. Interpretation of Atmospheric Composition Differences DA vs. Non-DA Stars.- 5. White Dwarfs: Mass Budget and Galactic Evolution.- References.- Herbig-Haro Objects and T Tauri Nebulae.- 1. Introduction.- 2. Observation of Herbig-Haro Obj ects.- 2.1. Occurrence and Apparent Structure.- 2.2. Variability.- 2.3. Reddening and Interstellar (Circumstellar ) Absorption.- 2.4. Spectra.- 2.5. Polarization and Relation of Herbig-Haro Objects to Infrared Sources.- 3. Theory and Theoretical Deductions from the Observations.- 3.1. Direct Interpretation of.…
Seller Inventory # 9783642809217
- Title
- Problems in Stellar Atmospheres and Envelopes
- Author
- B. Baschek
- Publisher
- Springer Berlin Heidelberg
- Publication year
- 2012
- Condition
- Neu
- Binding
- Taschenbuch
- Language
- English
- ISBN 10
- 3642809219
- ISBN 13
- 9783642809217
- Item weight
- 688 grams
- Dimensions
- 244x170x22 mm
"Synopsis" may belong to another edition of this title.
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