The Milky Way Galaxy: Proceedings of the 106th Symposium of the International Astronomical Union Held in Groningen, The Netherlands 30 May – 3 June, 1983

Front Matter....Pages i-xxiv
Coloured Illustrations....Pages 1-8
Front Matter....Pages 9-10
The Milky Way from Antiquity to Modern Times....Pages 11-24
Kapteyn and Statistical Astronomy....Pages 25-42
Studies of the Milky Way 1850–1930: Some Highlights....Pages 43-58
The Discovery of the Spiral Arms of the Milky Way....Pages 59-70
Front Matter....Pages 71-74
Models of the Mass Distribution of the Galaxy....Pages 75-84
A Model of our Galaxy....Pages 85-94
Mass Models of Three Southern Late-Type Dwarf Spirals....Pages 95-96
The Galactic Constants╌An Interim Report....Pages 97-100
Galactic Rotation Outside the Solar Circle....Pages 101-104
Young Galactic Clusters and the Rotation Curve of our Galaxy....Pages 105-106
How Well Do We Know the Rotation Curve of Our Galaxy?....Pages 107-108
Galactic Rotation and Velocity Fields....Pages 109-110
The Old Population....Pages 113-122
Near-Infrared Studies of the Milky Way....Pages 123-126
Infrared Scanning of the Galactic Bulge....Pages 127-128
Infrared Studies of the Stellar Population in Baade’s Window....Pages 129-130
On the Nature of OH/IR Stars....Pages 131-132
The Stellar Disk Component: Distribution, Motions, Age and Stellar Composition....Pages 133-142
Computer-Based Catalogue of Open-Cluster Data....Pages 143-144
Front Matter....Pages 71-74
The Kinematics of Nearby Stars and Large-Scale Radial Motion in the Galaxy....Pages 145-148
The Galactic Radial Gradient of Velocity Dispersion....Pages 149-150
Stellar Chemical-Abundance Gradient in the Direction of the South Galactic Pole - Preliminary Results....Pages 151-152
Star Counts, Local Density and K Z Force....Pages 153-160
The Stellar Distribution in the Galactic Spheroid....Pages 161-162
Studies of O-F5 Stars at the Galactic Poles....Pages 163-164
Galaxy Population Structure from Proper Motions....Pages 165-166
Large-Scale Distribution and Motions of Gas....Pages 169-170
Survey of Galactic HI Emission At ∣b∣ ≤ 20°....Pages 171-172
The Vertical Distribution of Galactic HI: The Arecibo-Green Bank Survey....Pages 173-174
New Light on the Corrugation Phenomenon in our Galaxy....Pages 175-178
HI at the Outer Edge of the Galaxy and its Implications for Galactic Rotation....Pages 179-180
The Electron Density in the Plane of the Galaxy....Pages 181-182
Molecular Clouds in External Galaxies....Pages 183-192
Comments on the Distribution of Molecules in Spiral Galaxies....Pages 193-194
Distribution and Motions of Co in M51....Pages 195-196
CO (2−1) Observations of Maffei 2....Pages 197-198
CO Survey of the Southern Milky Way....Pages 199-202
Distribution of CO in the Southern Milky Way and Large-Scale Structure in the Galaxy....Pages 203-204
A CO(2−1) Survey of the Southern Milky Way....Pages 205-206
Front Matter....Pages 71-74
The Carbon Monoxide Distribution in the Inner Galaxy....Pages 207-208
Outer-Galaxy Molecular Clouds....Pages 209-210
CH in the Galaxy....Pages 211-212
High-Energy Gamma Rays and the Large-Scale Distribution of Gas and Cosmic Rays....Pages 213-218
Large-Scale Mapping of the Galaxy by IRAS....Pages 219-222
High-Energy Galactic Phenomena and the Interstellar Medium....Pages 225-234
The High-Latitude Distribution of Galactic Gamma Rays and Possible Evidence for a Gamma-Ray Halo....Pages 235-236
On the Ultraviolet Background Radiation of the Galaxy....Pages 237-238
Radio Continuum Emission of the Milky Way and Nearby Galaxies....Pages 239-244
Loop I (The North Polar Spur) Region — A Quasi Radio Halo....Pages 245-246
The Magnetic-Field Structure and Dynamics of NGC 253....Pages 247-248
Modelling the Galactic Contribution to the Faraday Rotation of Radiation from Extra-Galactic Sources....Pages 249-250
A Bisymmetric Spiral Magnetic Field in the Milky Way....Pages 251-252
Spiral Structure of the Milky Way and External Galaxies....Pages 255-272
Which Kind of Spiral Structure Can Fit the Observed Gradient of Vertex Deviation?....Pages 273-274
Spiral Structure and Kinematics of HI and HII in External Galaxies....Pages 275-280
A Systematic Study of M81....Pages 281-282
Determination of Galactic Spiral Structure at Radiofrequencies....Pages 283-300
Giant Clouds and Star-Forming Regions as Spiral-Arm Tracers....Pages 301-302
The Largest Molecular Complexes in the First Galactic Quadrant....Pages 303-304
Front Matter....Pages 71-74
Interpretation of the Apparent Anomalies of the Galactic Structure....Pages 305-308
Small-Scale Structure and Motions in the Interstellar Gas....Pages 311-318
Atomic Hydrogen Towards 3C10....Pages 319-320
Interferometric Observations of the Small-Scale Structure of Galactic Neutral Hydrogen....Pages 321-322
A 10-Ghz Radio-Continuum Survey of the Galactic-Plane Region at the Nobeyama Radio Observatory - A Complex Region at l = 22° – 25°....Pages 323-324
Interstellar Sodium and Galactic Structure. A High-Resolution Survey....Pages 325-328
Molecular-Cloud Clusters and Chains....Pages 329-330
Three Large Molecular Complexes in Norma....Pages 331-332
Comparison of CO in the Galaxy and the Magellanic Clouds....Pages 333-334
Star Formation in the Orion Arm....Pages 335-342
A Survey of Molecular Clouds Associated with Young Open Star Clusters....Pages 343-344
A New Study of the Neutral Hydrogen in Gould’s Belt....Pages 345-346
The Galactic Nucleus....Pages 349-366
Fine Structure of Molecular Clouds within 1 Minute of Arc of the Galactic Center....Pages 367-370
Recombination-Line Observations of the Galactic Centre....Pages 371-376
Are Spiral Nuclei “Active” in the Radio Continuum?....Pages 377-378
Phenomena at the Galactic Centre — A Massive Black Hole?....Pages 379-384
Highlights of High-Velocity Clouds....Pages 387-408
A Deep Survey for High-Velocity Clouds....Pages 409-410
A Survey for High-Velocity Clouds in the Inner Galaxy....Pages 411-412
Front Matter....Pages 71-74
Observations of High-Velocity Clouds Colliding in the Anticenter....Pages 413-414
The Milky Way: A Halo, a Corona, or Both?....Pages 415-420
A Comparison of the Andromeda and Milky Way Galaxies....Pages 423-430
Radial Distributions of Constituents in M33, the Galaxy, and M51....Pages 431-434
A Coordinated Radio and Optical Survey of M31....Pages 435-436
Distribution and Motions of HI in M31....Pages 437-442
The Production of a 16-Mm Film of M31....Pages 443-444
Distribution and Motion of CO in M31....Pages 445-450
Large-Scale Maps of M31 at Middle and Far Infrared Wavelengths....Pages 451-456
Front Matter....Pages 457-460
Slippery Evidence on Masses in the Local Group....Pages 461-470
A Collision between the Large and Small Magellanic Clouds 2×10 8 Years Ago....Pages 471-476
Tidal Interactions Between the Galaxy and the Magellanic Clouds....Pages 477-478
Dynamical Evolution of the Galactic Disk....Pages 481-490
Evolution of the Vertical Structure of Galactic Disks....Pages 491-492
Heating of Stellar Disks by Massive Gas Clouds....Pages 493-496
Stellar Velocity Distribution in the Presence of Scattering Massive Clouds....Pages 497-498
Warps and Heavy Halos....Pages 499-502
3-Dimensional Particle Simulation of Vertical Oscillations in Gas Discs....Pages 503-504
Two-Fluid Gravitational Instabilities in a Galactic Disk....Pages 505-508
Collective Phenomena in a Multi-Component Gravitating System....Pages 509-510
Front Matter....Pages 457-460
Formation and Maintenance of Spiral Structure in Galaxies....Pages 513-532
Two-Dimensional Calculations of Tightly Wound Spiral Shocks....Pages 533-534
Oscillations of Rotating Gas Disks: p -Modes, g -Modes, and r -Modes....Pages 535-536
The Stabilizing Effects of Haloes and Spiral Structure....Pages 537-538
New N-Body Experiments on the Spiral Structure of Galaxies....Pages 539-540
Velocity Dispersion and the Stability of Galactic Disks....Pages 541-542
Periodic Orbits Relevant for the Formation of Inner Rings in Barred Galaxies....Pages 543-544
On the 3-Kpc Arm: Waves Excited at the Resonance by an Oval Distortion in the Central Region....Pages 545-546
A Barred Galaxy: The Inside Viewpoint....Pages 547-549
Stochastic Star Formation and Spiral Structure....Pages 551-558
Spiral Structure in Galaxies: Large-Scale Stochastic Self-Organization of Interstellar Matter and Young Stars....Pages 559-560
Star Formation in Molecular Clouds....Pages 561-566
Star Formation in a Density-Wave-Dominated, Cloudy Interstellar Medium....Pages 567-570
Spiral Tracers and Prestellar Incubation Periods in a Cloudy Interstellar Medium....Pages 571-572
Chemical Composition of Interstellar Material....Pages 575-584
Interstellar Nitrogen Isotope Ratios....Pages 585-586
The Chemical Evolution of the Galaxy....Pages 587-596
Kinematical and Chemical Evolution of the Galactic Disk....Pages 597-600
The Formation and Early Evolution of the Milky Way....Pages 603-610
Supposed History of our Galaxy....Pages 611-612
Front Matter....Pages 457-460
Secular Evolution in Galaxies....Pages 613-614
Gas Dynamics and Disk-Galaxy Evolution....Pages 615-620
Front Matter....Pages 621-622
Life in the Galaxy?....Pages 623-632
Front Matter....Pages 633-634
The Milky Way: Summary and Outlook....Pages 635-640
Back Matter....Pages 641-660