Astrometric Binaries

Z. Kopal and J. Rahe / Preface.- Z. Kopal / Friedrich Wilhelm Bessel - An Appreciation (Opening Address).- W. Fricke / Friedrich Wilhelm Bessel - 1784-1846 (Introductory Address).- I: Stellar Astrometry.- P. L. Bernacca / Project HIPPARCOS.- J. Domanget / HIPPARCOS Astrometric Binaries.- F. van't Veer / High-Resolution Problems in Astrometry and Spectroscopy of Binaries and their Significance for the Progress of Stellar Physics.- W. Schlosser / SECAM - A Seeing-Controlled Camera for High-Resolution Photographs.- S. Söderhjelm / Statistical Models for HIPPARCOS Binaries.- R. Ruffini and Song Doo Jong / De Media Aequinoctiorum Praecessione Atque de Nutatione Stellae SS433.- M. Soffel, J. Schastok, H. Ruder, and M. Schneider / Relativistic Astrometry.- II: Astrometric Binaries - Astrometry.- P. van de Kamp / Friedrich Wilhelm Bessel (1784-1846).- M. G. Fracastoro / Current Work on Binary and Multiple Stars.- L. W. Fredrick / Modern Methods in the Astronomy of Double Stars.- M. S. Zverev / On the Observation of Double Stars for the Determination of their Proper Motions.- H. Eichhorn / On the Determination of Double Star Orbits.- A. N. Goyal / Distribution of Astrometric Binaries in Various Galactic Latitudes.- T. Herczeg / Astrometric Binaries and their Role in Double Star Astronomy.- L. Yan, L. Wan, and S. Gong / Work on Astrometric Binaries in China.- F. B. Wood / Close Triple Star Systems.- K. D. Rakos / Luminosity Distribution Function for Visual Binary Stars.- J. L. Halbwachs / The Frequency of Binaries with a Degenerate Component.- L. V. Mirzoyan and G. N. Salukvadze / Trapezium-Type Multiple Systems.- J. L. Halbwachs / A Search for CPM Stars.- III: Astrometric Binaries - Astrophysics.- G. Ishida / The Spectroscopic Study of Astrometric Binaries.- I.Bues and G. Rupprecht / G82-23: A New Subdwarf-White Dwarf Binary.- W. van Hamme and R. E. Wilson / Accuracy of Close Binary Mass Determinations from Parallaxes.- R. D. Chapman / Epsilon Aurigae.- IV: Heliometric Astrometry.- E. H. Geyer / The Heliometer Principle and Some Modern Applications.- K. Koziel / Bessel and Librations of the Moon.- M. Moutsoulas / The Heliometer as a Tool for the Measure of the Moon.- Z. Kopal / Concluding Remarks.- List of Participants.- Announcement.