Unsolved Problems of the Milky Way: Proceedings of the 169th Symposium of the International Astronomical Union, held in the Hague, the Netherlands, August 23–29, 1994

Front Matter....Pages i-xx
Front Matter....Pages xxi-xxi
Should the Outer Milky Way be Axisymmetric?....Pages 1-10
The Shape of the Disk: Clues from the Kinematics of Disk Stars....Pages 11-21
The Shapes of Dark Halos....Pages 23-30
The Axisymmetric Stability of the Milky Way....Pages 31-37
Faint Surface Photometry of the Halo of M31....Pages 39-45
A Survey of Surveys....Pages 47-55
Ellipticity of Outer Regions of Galactic Disks....Pages 57-58
Near Infrared Star Counts as a Probe of Asymmetries in the Galaxy’s Disk....Pages 59-60
Front Matter....Pages N1-N1
Morphology of the Galactic Bulge from COBE DIRBE Observations....Pages 61-69
Is There a Bulge Distinct from the Bar?....Pages 71-77
Dynamics of the Bar at the Galactic Centre....Pages 79-91
Results from the Optical Gravitational Lensing Experiment (OGLE)....Pages 93-102
Evidence for the Galactic Bar from the Two Color Photometry of the Bulge Red Clump Stars....Pages 103-109
M Giant Kinematics in Off-axis Fields between 150 and 300 PC from the Galactic Center....Pages 111-117
Results of the SiO Maser Survey of the Galactic Bulge IRAS Sources....Pages 119-124
3D N-Body Simulations of the Milky Way....Pages 125-131
Comparison with External Galaxies Dynamics....Pages 133-143
Properties of the Galactic Bar from Hydrodynamical Simulations....Pages 145-146
Position-Velocity Diagrams as a Probe of the Bar in Edge-On Galaxies....Pages 147-148
Front Matter....Pages N3-N3
Is there a Compact Central Mass Concentration in Our Galaxy?....Pages 149-168
Front Matter....Pages N3-N3
What is SGR A*?....Pages 169-180
Is SGR A* Underfed, Underefficient, or Underdone ?....Pages 181-187
Recurrent Starbursts or Intermittent Starburst/AGN Phenomena at the Galactic Center ?....Pages 189-192
Diameter and Proper Motion of SGR A*....Pages 193-198
The Radio Spectrum of SGR A*....Pages 199-204
Evolution in the Nucleus....Pages 205-214
Dynamical Evolution of Galactic Center Star Cluster and Importance of Stellar Collisions....Pages 215-223
A Comparison of Near Infrared Spectra of the Galactic Center He I Emission Line Sources and Early Type Mass Losing Stars....Pages 225-230
Mid-Infrared (4.8 – 12.4 and 20.0 μ m) Imaging of the Galactic Center: Modeling the Dust Emission and Energetics of the Central Parsec....Pages 231-240
Mini-Spiral at the Galactic Center: A Link Between its Structure and the Value of a Central Point Mass....Pages 241-246
What are the Radio Filaments Near the Galactic Center?....Pages 247-261
The Nature of the Galactic Center Arc....Pages 263-269
The Nature of the Scattering and Faraday Screens Toward the Galactic Center....Pages 271-277
The Galactic Center Star Cluster: Normal Evolution !?....Pages 279-280
C 18 O and HNCO in the Galactic Centre....Pages 281-282
Two New Views of the Galactic Center....Pages 283-284
Possible Evidence for a Binary Massive Black Hole in the Galactic Nucleus....Pages 285-286
Front Matter....Pages N5-N5
The Hot Gas in the Galactic Bulge....Pages 287-295
Motions and Deformations of the Inner-Galaxy Neutral Gas Layer....Pages 297-310
A Survey of OH in the Galactic Centre Region....Pages 311-316
Front Matter....Pages N5-N5
Stellar Populations in the Galactic Bulge....Pages 317-327
Metallicity, Structure and Kinematics of the Milky Way’s Bulge....Pages 329-334
Galactic Bulges as an Evolutionary Phenomenon: Observational Evidence from the Statistics of “Box/Peanut” Bulges....Pages 335-339
Observational Properties of SiO Masers in the Galactic Bulge IRAS Sources....Pages 341-342
Report on a Survey of H 2 O Masers towards the Galactic Center....Pages 343-344
Dynamical Properties of Galactic OH/IR Stars....Pages 345-346
Semiregular Variables in the Galactic Bulge....Pages 347-348
Instabilities of Uniformly Rotating Disks....Pages 349-350
F(E,L Z ) for Kent’s Model of the Galactic Bulge....Pages 351-352
Front Matter....Pages N7-N7
The Age Structure of the Older Parts of the Galaxy....Pages 353-366
Is the Dynamical History at Odds with the Chemical History?....Pages 367-379
Globular Clusters and the Formation of the Galactic Halo....Pages 381-388
Chemical and Dynamical History of the Milky Way....Pages 389-394
The Metal Pre-Enrichment of the Galactic Disk: Solving the G-Dwarf Problem....Pages 395-401
Did the Bulge Form All at Once?....Pages 403-410
Late-Type Giants in the Bulge, at High Galactic Latitudes and in the Plane....Pages 411-417
Effects of Chaos in the Galactic Halo....Pages 419-421
The Velocity Dispersion in the Cold Collapse....Pages 423-424
The Chemodynamical Evolution of Spheroidal Systems and the Resultant Stellar Abundance Distribution Function....Pages 425-426
Metallicity Structures of the Milky Way....Pages 427-428
Front Matter....Pages N7-N7
The Formation of the Galactic Bulge....Pages 429-430
The Scatter of Metallicities of Stars in the Solar Neighbourhood....Pages 431-432
Different Laws of Increasing of Stellar Dispersion: Observational Flaws or Natural Property of Stellar Population?....Pages 433-434
UBVI CCD Photometry of an Old Open Cluster AM-2....Pages 435-436
Front Matter....Pages N9-N9
What do Gamma Rays Tell us about the ISM? New Insight from the Compton Observatory....Pages 437-446
HI in the Milky Way....Pages 447-468
How Important is Neutral Carbon to an Understanding of the Dense Interstellar Medium?....Pages 469-478
Why is the HI Scale Height Constant with Galactocentric Radius ?....Pages 479-487
The Z Velocity Dispersion of Outer H I Disks....Pages 489-495
Diffuse [C II] Emission in the Galaxy....Pages 497-498
Vertical Equilibrium of HI in the Galactic Disk....Pages 499-500
Physical Conditions of Molecular Gas in the Galaxy....Pages 501-503
Does a Rotation Velocity Jump Generate the Outer Spiral Structure?....Pages 505-506
Dynamics of Thick Spirals....Pages 507-508
Potential-Density Basis Sets for Three-Dimensional Disks....Pages 509-510
The Dynamics of Planetary Nebulae in the Galaxy: Evidence for a Third Integral....Pages 511-512
The Existence of Moving Groups and the Disk Heating Problem....Pages 513-514
The Influence of Velocity Dispersion on Dynamical Friction in Stellar Discs....Pages 515-516
On the Spiral-Induced Nonlinear Dissipative Process to the Evolution of the Galactic Disk....Pages 517-518
Stability of a Collisionless Stellar Disk....Pages 519-520
Front Matter....Pages N9-N9
Stability of a Collisional Galactic Disk....Pages 521-522
Galactic Orbits of Different Galactic Population Objects....Pages 523-524
Local Variations of the Velocity Ellipsoid....Pages 525-526
Escape Velocities from Unstable Triple Stars....Pages 527-528
Hierarchical and Non-Hierarchical Triples....Pages 529-530
Criteria of Dynamical Isolation of Binaries and Multiples....Pages 531-532
Front Matter....Pages N11-N11
The Unsolved Problem of Stellar Origins....Pages 533-549
What do we Really Know about Cloud Formation?....Pages 551-560
Far-Outer Galaxy Molecular Clouds....Pages 561-566
Far-Infrared Spectral Observations of the Galaxy by the Far-Infrared Absolute Spectrophotometer....Pages 567-573
The Search for Cold Molecular Gas in the Outer Galaxy....Pages 575-581
How does Star Formation Affect the Large Scale Structure of the ISM?....Pages 583-590
The Structure of the Neutral Interstellar Medium: A Theory of Interstellar Turbulence....Pages 591-596
Are there Giant Vortices Near Solar Circle?....Pages 597-603
Distance and Metallicity of HVCS....Pages 605-606
Molecular Mass Distribution in the Outer Galaxy....Pages 607-608
A Hydromagnetic Model for the Hierarchical Structure of Molecular Clouds....Pages 609-610
Galactic Fine Structure at 843 MHZ....Pages 611-612
Neutral Gas Contributions to [S II ] Galactic Background Emission....Pages 613-614
Study of the Magnetic Field of the Galaxy Using Correlation Functions of the Intensity of Synchrotron Background Radio Emission....Pages 615-616
Front Matter....Pages N11-N11
HI Bubbles Around NGC 6888....Pages 617-618
Search for HI Bubbles around WR Stars: WR 149....Pages 619-620
GS64-01-97: Expanding Supershell in the Milky Way....Pages 621-622
Multi-Wavelength Study of the Giant Bubble in Cepheus....Pages 623-624
Non-Thermal Particles Near OB Associations....Pages 625-626
G54.4-0.3 — Multi-Frequency Investigation of an SNR in Interaction with the ISM....Pages 627-628
HST Spectroscopy of the Orion Nebula....Pages 629-632
Front Matter....Pages N13-N13
How Ought One Parameterize the Milky Way?....Pages 633-643
Does Our Galaxy Have a Massive Dark Corona ?....Pages 645-650
Mass Near the Sun....Pages 651-659
Outer Disc Rotation from Cepheid Variables....Pages 661-667
Where Does the Galaxy End?....Pages 669-680
How do the Stellar Disc and Thick Disc Stop ?....Pages 681-687
Proper Motion Study of the Galactic Rotation Curve....Pages 689-695
The Mass Distribution of the Milky Way Deduced from Globular Cluster Dynamics....Pages 697-702
The Rotation Curve from A-F Supergiants....Pages 703-706
The Structural Parameters of the Milky Way....Pages 707-708
A System of Galactic Constants Based on Stellar Dynamics....Pages 709-711
Estimation of Galactic Model Parameters by Interval Method....Pages 713-714
Back Matter....Pages 715-725