Highlights of Astronomy: As Presented at the XIIIth General Assembly of the I.A.U. 1967

Front Matter....Pages I-X
Front Matter....Pages 1-1
Exploring the Moon....Pages 3-11
Couches Extérieures et Structure Interne des Étoiles....Pages 12-32
Radio Galaxies and Quasars, I....Pages 33-44
Radio Galaxies and Quasars, II....Pages 45-70
Front Matter....Pages 71-71
Introduction....Pages 74-74
Recent Techniques in Solar Optical Astronomy from Space....Pages 75-93
Ultraviolet Astronomy....Pages 94-107
New Techniques in X-Ray Astronomy....Pages 108-123
Solar and Interplanetary Magnetic Fields and Plasmas....Pages 124-135
Infrared Astronomy....Pages 136-147
Some Problems and Instrumental Features of Submillimeter Astronomy....Pages 148-163
New Techniques in Space Radio—Astronomy....Pages 164-175
Introduction....Pages 178-179
Surveys of X-Ray Sources....Pages 180-183
Recent Results on Extragalactic Cosmic X-Ray Sources from Rocket and Balloon Flights....Pages 184-187
A Cosmic X-ray Survey in the Southern Hemisphere....Pages 188-191
Results from Detailed Studies of X-ray Sources....Pages 192-201
The X-ray Spectra of Cygnus XR-1 and the Crab Nebula....Pages 202-205
Optical and Radio Information....Pages 206-209
Theoretical Review....Pages 210-215
Front Matter....Pages 71-71
X-rays Radiation of a Neutron Star as a Result of Gas Accretion....Pages 216-219
The Cosmic X-ray Background....Pages 220-227
The Occurrence of Lithium in Stars....Pages 230-232
Evidence for Lithium Destruction and Synthesis in Main-Sequence and Subgiant Stars of about Solar Mass....Pages 233-236
Observations of Beryllium in Stars....Pages 237-242
Lithium Observations in the Sun....Pages 243-246
On the Lithium Abundance in Sunspots and the Undisturbed Solar Atmosphere....Pages 247-250
The Formation of Li, Be, B Isotopes by the Spallation of CNO....Pages 251-254
What can We Learn from Li and Be Stellar Observations?....Pages 255-260
The Mixing of Lithium....Pages 261-275
Introduction....Pages 278-278
The AGK3, SRS and Related Projects....Pages 279-285
Recent Work on Fundamental Astrometry in the U.S.S.R.....Pages 286-291
Meridian Observations at Santiago, Chile....Pages 292-296
Preliminary Results of the Determination of Absolute Proper Motions of Stars Referred to Galaxies....Pages 297-300
Desiderata for FK5....Pages 301-305
Precession and Galactic Rotation on the Basis of Various Proper Motion Systems....Pages 306-310
The Relationships between Various Techniques for Obtaining Proper Motions....Pages 311-315
The Place of Accurate Proper Motions in Galactic Research....Pages 316-318
Études sur L’Emploi de Recouvrements de Plaques Pour L’Établissement de Catalogues Photographiques....Pages 319-337
Front Matter....Pages 71-71
The Overlap Approach toward the Derivation of Photographic Stellar Coordinates....Pages 338-342
Report on Overlap Methods in Photographic Astrometry....Pages 343-346
Relative Star Positions from Overlapping Photographic Plates....Pages 347-351
Optical Studies of Extragalactic Radio Sources....Pages 354-355
Optical Spectra of Extragalactic Radio Sources....Pages 356-360
Radio Observations of Angular Structure....Pages 361-370
Radio-Source Spectra and Their Time Variations....Pages 371-372
Infrared Observations of QSS....Pages 373-373
Millimetre-Wave Observations....Pages 374-374
The Nature of the Red-Shifts in Quasi-Stellar Objects....Pages 375-375
Theories Proposed to Explain Quasi-Stellar Objects and Radio Galaxies....Pages 376-378
A Cosmological Interpretation of the Absorption-Line Spectra of QSO....Pages 379-379
The Evolution of Quasi-Stellar Sources and Radio Galaxies....Pages 380-382
The Magnetodynamic Model of Quasars....Pages 384-388
A Rotating Disk Model for a Quasar....Pages 389-390
Shorter Contributions....Pages 391-392
Opening Remarks....Pages 394-395
On the Origin of the Algol Systems....Pages 396-408
The Evolution of Close Binaries and the Formation of the Wolf-Rayet Stars....Pages 409-413
White Dwarfs in Close Binary Systems....Pages 414-419
Front Matter....Pages 71-71
Arguments Indicating that Ap and Am Stars are Evolved Spectroscopic Binaries....Pages 420-431
Investigation of Possible Abundance Anomalies in Close Binaries of Spectral Types A0-A2 & F5-F6....Pages 432-436
The Evolution of Close Binaries and the Am Stars....Pages 437-442
Origin of Binaries from a Consideration of Angular Momentum....Pages 443-450
The Origin and Early Evolution of Close Binary Stars....Pages 451-451
The Structure of W Ursae Majoris Systems....Pages 452-452
Comments....Pages 453-454
A Model for the Nova Outburst....Pages 455-455
Concluding Remarks....Pages 456-458
Front Matter....Pages 459-459
A Description Of The Lunar Orbiter Spacecraft....Pages 462-470
Photographic Results of the Lunar Orbiter Program....Pages 471-523
Introduction....Pages 526-526
The Need of Ground-Correlated High-Resolution Space Observations in the Visible....Pages 527-529
Space Observations Needed for Improving Our Knowledge of Solar Flares....Pages 530-532
Space Observations of Flare Sprays and Related Surge Phenomena....Pages 533-537
The Needs and Requirements from the Standpoint of the Ultraviolet Solar Observations....Pages 538-540
Hard Solar X-Ray Bursts....Pages 541-543
Solar Gamma Rays and Their Correlation with Space and Ground-Based Observations....Pages 544-546
The Coordination of Ground-Based and Space Observations: Summary....Pages 547-548