Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry: Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994

Front Matter....Pages i-xvi
Front Matter....Pages 1-1
CCD Astrometry....Pages 3-8
Relative Astrometry with Imaging Transit Telescopes....Pages 9-12
Narrow-Angle and Wide-Angle Astrometry via Long Baseline Optical/Infrared Interferometers....Pages 13-18
Single and Double Star Astrometry with the Mark III Interferometer....Pages 19-22
The USNO Astrometric Optical Interferometer....Pages 23-29
New Astrometric Instrumentation in Japan....Pages 31-34
Large Fundamental and Global Transit Circle Catalogs....Pages 35-42
Astrometry of Large Sky Surveys....Pages 43-43
The Lick Northern Proper Motion Program....Pages 45-48
Large Photographic Catalogues....Pages 49-52
Properties of the Hipparcos Catalogue: What Confidence can We have in the Final Data?....Pages 55-60
Tycho Astrometry from 30 Months of Satellite Mission....Pages 61-68
Double Star Astrometry with the Hipparcos Data....Pages 69-76
Scientific Contents of the Hipparcos Input Catalogue....Pages 77-82
Astrometric and Astrophysical Insights into the Hipparcos Data Quality....Pages 83-86
Binary Star Astrometry with the Hubble Space Telescope: One Millisecond of Arc Accuracy and Beyond....Pages 87-87
Hubble Space Telescope: A Generator of Sub-Milliarcsecond Precision Parallaxes....Pages 89-94
Fringe Interferometry in Space: The Fine Structure of R136a with the Astrometer Fine Guidance Sensor Aboard HST....Pages 95-100
Astrometry with the HST Planetary Camera....Pages 101-106
The Dynamical Reference Frame....Pages 109-116
Front Matter....Pages 1-1
The Extragalactic Optical-Radio Reference Frame....Pages 117-117
VLBI Astrometry of Radio-Emitting Stars....Pages 119-126
The Hipparcos Extragalactic Link....Pages 127-132
Front Matter....Pages 133-133
Accurate Parallaxes and Stellar Ages Determinations....Pages 135-142
High-Precision Astrometry and the Modelling of Stellar Spectra....Pages 143-148
Stellar Astrophysics with Sub-Milliarcsecond Optical Interferometry....Pages 149-155
Peculiar Stars of Low Luminosity....Pages 157-162
High-Precision Timing of Millisecond Pulsars and Precision Astrometry....Pages 163-171
Late Stages of Stellar Evolution....Pages 173-180
Fine Structure in the Main Sequence: Primordial Helium and Δ Y /Δ Z ....Pages 181-186
Accurate Binary Mass Determinations: Goals, Limitations, and Prospects....Pages 187-192
Sub-Milliarcsecond Optical Astrometry and Binary Stars....Pages 193-202
HST in Search of Binaries Among Faint Members of the Hyades Cluster....Pages 203-203
Prospects for Detecting Unseen Companions of Periodic Variables....Pages 205-208
A Galactic Population Census in Support of Astrometric Measurements....Pages 211-215
Galactic Kinematics on the Basis of Modern Proper Motion Data....Pages 217-226
Sub—Milliarcsecond Astrometry of Star Clusters and Associations....Pages 227-232
Detectability of Galactic Kinematical Parameters from Proper Motions....Pages 233-237
Probing Non-Axisymmetry with Proper Motions....Pages 239-246
Galactic Dynamics and Dark Matter with Sub-Milliarcsecond Astrometry....Pages 247-250
Front Matter....Pages 133-133
Astrometric Tests of Galactic Evolution....Pages 251-258
Motions of Globular Clusters....Pages 259-263
Better Parallaxes and the Cosmic Distance Scale....Pages 267-272
The Kinematics of the Magellanic Clouds....Pages 273-282
Secular Motions of Extragalactic Radio-Sources and the Stability of the Radio Reference Frame....Pages 283-283
Improvement and Maintenance of the Extragalactic Reference Frame....Pages 284-284
Earth Orientation — The Current and Future Situation....Pages 287-291
Earth Rotation Velocity in Relation with Different Reference Frames....Pages 293-293
The General Relativistic Potential of Astrometric Studies at Microarcsecond Level....Pages 295-300
High Accuracy Astrometry Benefits for Celestial Mechanics....Pages 301-304
Gravitational Lensing by Stars and Machos and the Orbital Motion of the Earth....Pages 305-308
Improvements to Reference Systems and Their Relationships....Pages 309-314
Front Matter....Pages 315-315
A New Era of Global Astrometry. II: A 10 Microarcsecond Mission....Pages 317-322
On the Registration System of the AIST-Project....Pages 323-326
Photometric Facilities of the AIST Space Project....Pages 327-330
Newcomb Astrometric Satellite....Pages 331-334
The Project OSI....Pages 335-335
Possibilities of Sub-Milliarcsecond Astrometry in the Lomonosov Project....Pages 336-336
A Small Interferometer in Space for Global Astrometry: The GAIA Concept....Pages 337-344
European Space Interferometry....Pages 345-345
Front Matter....Pages 315-315
Astronomy from a Lunar Base....Pages 347-350
Front Matter....Pages 351-351
The New Catalogue of Positions and Proper Motions of 5115 Bright Stars Compiled as the Result of the International “Bright Stars” Program....Pages 353-353
A Program of Infrared Astrometry....Pages 354-354
Joint Program for Automatic Analysis of Astrographic Plates....Pages 355-355
New Measurements of Positions for the Astrographic Catalogue Stars....Pages 356-356
Progress Report on the Southern Proper Motion Program....Pages 357-357
First Results of the Bordeaux Meridian Circle Equipped with a CCD Detector....Pages 358-358
The Observations of Gliese 623 and Some other Objects with Suspected Unseen Components....Pages 359-359
A Giant Meridian Circle — Reflector....Pages 360-360
An Autocollimation Circle Reading System for the Infrared Meridian Instrument....Pages 361-361
Stellar Diameter Measurements with Fiber Optic Double Fourier Interferometry —Experimental Study....Pages 362-362
Stellar Image Location with Maximum Correlation Procedure....Pages 363-363
Ground-Based Astrometry with Short-Focus CCD-Astrographs....Pages 364-364
Improvement of Star Positions by a New Axial Meridian Circle with Negligible Systematic Errors....Pages 365-365
Potential of MCP Based Photodetecting Systems for High Accuracy Astronomical Object’s Observation....Pages 366-366
Schmidt Plate Astrometry: Subplate Software....Pages 367-367
Astrometric Plate Reduction with Orthogonal Functions and Milliarcseconds Accuracy in Deep Proper Motion Surveys....Pages 368-368
Accurate Proper Motions as Probes of Distance and Dynamical Structure: The Case of M13....Pages 369-369
A Method for Star Image Separation from the Background in Automatic Coordinate Measurements....Pages 370-370
The Atmospheric Limitation on the Precision of Ground-Based Astrometry....Pages 371-371
Front Matter....Pages 351-351
Precision Vs. Accuracy in Star Catalogs....Pages 372-372
A Test of the Astrometric Quality of the Southern Guide Star Catalog 1.2....Pages 375-375
Random Errors of Tycho Astrometry....Pages 376-376
A Compiled Catalog of Optical Positions of Extragalactic Radio Sources....Pages 379-379
Hipparcos Extragalactic Link....Pages 380-380
RORF — A Radio Optical Reference Frame....Pages 381-381
Analysis of the FK5 System in the Equatorial Zone....Pages 382-382
Confor Program: Determination of Relative Orientation Parameters between VLBI and FK5 Reference Frames....Pages 383-383
Placing the Guide Star Catalog on the Hipparcos System....Pages 384-384
ARC Length Difference Method in the Selection of Primary Sources of Combined Extragalactic Radio Source Catalogues....Pages 385-385
Analysis of Stellar Observations: Systematic Effects, Radio Stars, Proper Motions....Pages 389-389
CCD Photometry of Hipparcos Stellar Systems....Pages 390-390
Some Physical Parameters and UVBY β Photometry of Trapezium Type Multiple Systems....Pages 391-391
Speckle Interferometry of Double Stars from the Southern Hemisphere....Pages 392-392
Macho Photometry and Astrometry....Pages 393-393
The Interseasonal Trend in Photographic Double Stars Observations....Pages 394-394
The Catalogue of the Components of Double and Multiple Stars (C C D M) — First edition....Pages 395-395
A Dynamical Investigation of Nine Wide Visual Double Stars in the Neighbourhood of the Sun....Pages 396-396
Stand-Alone Program Package for Improvement of Parameters of Celestial Bodies Motion....Pages 397-397
Velocities of Escapers from Unstable Hierarchical Triple Stars....Pages 398-398
Front Matter....Pages 351-351
Near Infrared High Angular Resolution Observations of Stars and Circumstellar Regions by Lunar Occultations....Pages 399-399
Dynamics of the Alpha Cen System....Pages 400-400
Dark Matter in Triple Galaxies....Pages 403-403
Current Fundamental System Errors and Post-Hipparcos Utilization of Ground-Based Optical Instruments....Pages 404-404
CCD Astrometry of Near-Earth Asteroids....Pages 405-405
Front Matter....Pages 407-407
Concluding Remarks....Pages 409-432
Back Matter....Pages 433-441