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Licensed Unlicensed Requires Authentication Published by Harvard University Press 1979

94. The Galactic System as a Spiral Nebula

From the book A Source Book in Astronomy and Astrophysics, 1900–1975

  • Jan H. Oort , Frank J. Kerr and Gart Westerhout
https://doi.org/10.4159/harvard.9780674366688.c101
From the book
A Source Book in Astronomy and Astrophysics, 1900–1975
A Source Book in Astronomy and Astrophysics, 1900–1975

Chapters in this book (138)

Frontmatter
General Editor's Preface
Preface
Contents
CHAPTER I. New Windows on the Universe
On the Application of Interference Methods to Astronomical Measurements
2. A Test of a New Type of Stellar Interferometer on Sirius
3. Concerning Observations of Penetrating Radiation on Seven Free Balloon Flights
4. The Possibilities of Large Telescopes
5. A Rapid Coma-Free Mirror System
6. On the Discovery of Extraterrestrial Radio Waves
7. Searching for Interstellar Communications
8. The Photoelectric Photometry of the Stars
9. The First Results Obtained from Photographs of the Invisible Side of the Moon
10. X-Ray and Extreme Ultraviolet Observations of the Sun
11. Evidence for X-Rays from Sources outside the Solar System
12. Infrared Observations of the Galactic Center
13. Interstellar Deuterium Abundance in the Direction of Beta Centauri
CHAPTER II. The Solar System
14. The Moon's Face: A Study of the Origin of Its Features
15. Of Atmospheres upon Planets and Satellites
16. On the Probable Existence of a Magnetic Field in Sun-Spots
17. How Could a Rotating Body such as the Sun Become a Magnet?
18. Polarization of the Moon and of the Planets Mars and Mercury
19. The Theory of Continental Drift
20. The Spectra of Venus, Mars, Jupiter, and Saturn under High Dispersion
21. The Mystery of Coronium and the Million-Degree Solar Corona
22. Corpuscular Influences upon the Upper Atmosphere
23. The Origin and Nature of Comets
24. Observations of a Variable Radio Source Associated with the Planet Jupiter
25. Solar Corpuscular Radiation and the Interplanetary Gas
26. Radiation Observations with Satellite 1958ε
27. The Hot Surface Temperature of Venus
28. Radar Determinations of the Rotations of Venus and Mercury
29. Mars as Viewed from Mariner 9
30. The Moon after Apollo
31. The Encounter Theories of the Origin of the Solar System
32. The Nebular Theory of the Origin of the Solar System
33. A Production of Amino Acids under Possible Primitive Earth Conditions
CHAPTER III. Stellar Atmospheres and Stellar Spectra
34. On the Radiation of Stars
35. Relations between the Spectra and Other Characteristics of Stars
36. Some Spectral Criteria for the Determination of Absolute Stellar Magnitudes
37. On the Radiative Equilibrium of Stars
38. Ionization in the Solar Chromosphere
39. The Abundances of the Chemical Elements in Stellar Atmospheres
40. On the Rotation of Stars
41. Intensity Measurement of the Fraunhofer Lines in the Wavelength Region 5,150 to 5,270 Å
42. Electron Affinity in Astrophysics
43. The Quantitative Analysis of the BO-Star τ Scorpii, Part II
CHAPTER IV Stellar Evolution and Nucleosynthesis
44. The Equivalence of Mass and Energy
45. The Internal Constitution of the Stars
46. The Mass-Luminosity Relation for Stars
47. Atomic Synthesis and Stellar Energy I, II
48. Element Transformation inside Stars. II
49. Energy Production in Stars
50. Nuclear Reactions in Stellar Evolution
51. Stellar Structure, Source of Energy, and Evolution
52. Nuclear Reactions in Stars without Hydrogen
53. Inhomogeneous Stellar Models II: Models with Exhausted Cores in Gravitational Contraction
54. Studies of Young Clusters and Stellar Evolution in the Early Phases of Gravitational Contraction
55. Synthesis of the Elements in Stars
56. Neutrinos from the Sun
CHAPTER V. Variable Stars and Dying Stars
57. Periods of Twenty-five Variable Stars in the Small Magellanic Cloud
58. On the Pulsations of a Gaseous Star and the Problem of the Cepheid Variables
59. Τ Tauri Variable Stars
60. Binary Stars among Cataclysmic Variables III : Ten Old Novae
61. The Discovery of White Dwarf Stars
62. On Dense Stars
63. Neutrino Theory of Stellar Collapse
64. Discovery of Circularly Polarized Light from a White Dwarf Star
65. On the Gravitational Field of a Point Mass according to the Einsteinian Theory
66. On the Theory of Stars
67. The Discovery of a Candidate Black Hole
68. Novae or Temporary Stars
69. On the Possible Existence of Neutron Stars
70. Spectra of Supernovae
71. The Crab Nebula
72. On the Nature of the Luminescence of the Crab Nebula
73. Energy Emission from a Neutron Star
74. Observation of a Rapidly Pulsating Radio Source
75. Rotating Neutron Stars as the Origin of the Pulsating Radio Sources
CHAPTER VI. The Distribution of Stars and the Space between Them
76. Investigations of the Spectrum and Orbit of Delta Orionis
77. Star Streaming
78. The Kinetic Energy of a Star Cluster
79. The Scale of the Universe
80. First Attempt at a Theory of the Arrangement and Motion of the Sidereal System
81. Star-Streaming and the Structure of the Stellar System
82. Observational Evidence for the Rotation of Our Galaxy
83. On the Dark Nebula NGC 6960
84. The Source of Luminosity of Gaseous Nebulae
85. The Origin of the Nebular Lines and the Structure of the Planetary Nebulae
86. The Physical State of Interstellar Hydrogen
87. Preliminary Results on the Distances, Dimensions, and Space Distribution of Open Star Clusters
88. The Solid Particles of Interstellar Space
89. The Polarization of Starlight
90. The Temperature of Interstellar Matter
91. Radio Waves from Space : Origin of Radiowaves
92. The Radio Frequency Detection of Interstellar Hydrogen
93. Some Features of Galactic Structure in the Neighborhood of the Sun
94. The Galactic System as a Spiral Nebula
95. Density Waves in Disk Galaxies
96. The Discovery of Protostars (?)
97. Radio Observations of OH in the Interstellar Medium
98. Galactic Magnetic Fields and the Origin of Cosmic Radiation
99. Cosmic Rays and Radio Emission from Our Galaxy
100. Expanding Stellar Associations and the Origin of the Runaway O and Β Stars
CHAPTER VII. Normal Galaxies, Radio Galaxies, and Quasars
101. Novae in Spiral Nebulae
102. A Spectrographic Investigation of Spiral Nebulae
103. Modern Theories of the Spiral Nebulae
104. Cepheids in Spiral Nebulae
105. Extra-Galactic Nebulae
106. A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae
107. On the Masses of Nebulae and of Clusters of Nebulae
108. Nuclear Emission in Spiral Nebulae
109. The Resolution of Messier 32, NGC 205, and the Central Region of the Andromeda Nebula
110. A Revision of the Extra-Galactic Distance Scale
111. Redshifts and Magnitudes of Extra-Galactic Nebulae
112. On the Evolution of Galaxies
113. Fluctuations in Cosmic Radiation at Radio Frequencies
114. Positions of Three Discrete Sources of Galactic Radio-Frequency Radiation
115. Cosmic Radiation and Radio Stars
116. The Origin of Cosmic Radio Noise
117. Identification of the Radio Sources in Cassiopeia, Cygnus A, and Puppis A
118. The Nature of Cosmic Radio Sources
119. First True Radio Star?
120. The Discovery of Quasars
121. The Quasi-Stellar Radio Sources 3C 48 and 3C 273
CHAPTER VIII. Relativity and Cosmology
122. Explanation of the Perihelion Motion of Mercury by Means of the General Theory of Relativity
123. A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Total Eclipse of May 29, 1919
124. Fourth Test of General Relativity: New Radar Result
125. On the Curvature of Space
126. A Homogeneous Universe of Constant Mass and Increasing Radius accounting for the Radial Velocity of Extra-Galactic Nebulae
127. On the Relation between the Expansion and the Mean Density of the Universe
128. The Cosmical Constants
129. The Steady-State Theory of the Expanding Universe
130. The Origin of Chemical Elements
131. The Evolution and Physics of the Expanding Universe
132. A Measurement of Excess Antenna Temperature at 4080 MHz
Indexes
Author Index
Subject Index
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