Proceedings from the Hipparcos Venice '97 symposium

Presenting the Hipparcos and Tycho Catalogues
first astrophysical results of the Hipparcos astrometry mission


The Hipparcos Venice '97 Symposium was held in May (13-16) 1997. The symposium had three main aims: to present the Hipparcos and Tycho Catalogues to the scientific community; to present the first astrophysical results from the Hipparcos mission and to reflect on possibilities offered by astrometry from space in the future.

The symposium was organised into twelve sessions covering:
Session 1: Description of the Hipparcos and Tycho Catalogues
Session 2: Astrometric Results
Session 3-4: Stellar Physics
Session 5-6: Galactic Physics
Session 7: Cosmic Distance and Age Scale
Session 8-10: Selected Highlights
Session 11: Prospects of Microarcsec Astrometry: the Science
Session 12: Prospects of Microarcsec Astrometry: the Projects

The proceedings are reproduced here in pdf format.

Session 1: Description of the Hipparcos and Tycho Catalogues

  • The Hipparcos Catalogue Contents (M.A.C. Perryman)  [PDF]
  • Astrometric Properties of the Hipparcos Catalogue (F. Mignard) [PDF]
  • Connection of the Hipparcos Catalogue to the Extragalactic Reference Frame (J. Kovalevsky) [PDF]
  • The Hipparcos Catalogue Double and Multiple Systems Annex (L. Lindegren)  [PDF]
  • The Hipparcos Photometry and Variability Annexes (F. van Leeuwen)  [PDF]
  • The Tycho Catalogue: Astrometry and Photometry (E. Høg)  [PDF]
  • The Tycho Catalogue: Stellar Content (D. Egret, C. Fabricius) [PDF]
  • The Hipparcos Solar System Objects Annexes (D. Hestroffer) [PDF]


  • Volume 13: The Atlas of Identification Charts (D. Mégevand et al.)  [PDF]
  • A Comparative Analysis of Some Statistical Properties of the Hipparcos Catalogue (B. Bucciarelli)  [PDF]
  • Determination of the PPN Parameter "gamma" with the Hipparcos Data (M. Froeschlé et al.) [PDF]
  • Hipparcos Extragalactic Link: the Potsdam Contribution (S. Hirte et al.)  [PDF]
  • Comparison of the FK5 Frame to Hipparcos (F. Mignard, M. Froeschlé)  [PDF]
  • Contribution of the Main Astronomical Observatory, Ukraine, to the Reference Frame Link (V.S. Kislyuk et al.)  [PDF]
  • Some Considerations in Making Full Use of the Hipparcos Catalogue (A.G.A. Brown et al.) [PDF]

Session 2: Astrometric Results

  • The Hipparcos/Tycho ASCII CD-ROMs and Access Software (H. Schrijver)  [PDF]
  • Celestia 2000 (C. Turon et al.) [PDF]
  • The Millennium Star Atlas (R.W. Sinnott)  [PDF]
  • On-Line Services at CDS for Distribution of Hipparcos Data (D. Egret et al.)  [PDF]
  • CPC2 Plate Reductions with Hipparcos Stars: First Results (N. Zacharias et al.)  [PDF]
  • Improvement of the Orbits of Asteroids and the Mass of (1) Ceres (B. Viateau, M. Rapaport)  [PDF]
  • The Hipparcos Catalogue: a Reference Frame for Earth Orientation in 1899.7-1992.0 (J. Vondrák et al.)  [PDF]


  • An Algorithm for Calculating Frame Rotations and its Application to Hipparcos (H. Lenhardt et al.)  [PDF]
  • Accurate Ground-Based Parallaxes to Compare with Hipparcos (H.C. Harris et al.) [PDF]
  • Hipparcos and Ground-Based Proper Motions of NPZT Stars (M. Yoshizawa)  [PDF]
  • Comparison between the ILS-MD and Hipparcos Catalogues (A. Poma et al.)  [PDF]
  • Comparisons of Results from Hipparcos with Ground-Based and Radio Observations (Xu Tongqi et al.)  [PDF]
  • Comparing the Tycho Catalogue with CCD Astrograph Observations (N. Zacharias et al.)  [PDF]
  • Tycho Reference Catalogue: Pilot Project Results (A. Kuzmin et al.)  [PDF]
  • Some First Experiments on the Photometric Calibration of Schmidt Plates against Tycho (J.E. Morrison et al.) [PDF]
  • A Photometric Calibration of the Guide Star Catalog (C. Fabricius)  [PDF]
  • CCD Meridian Circle Reductions using Tycho Positions as Reference (Y. Réquième et al.)  [PDF]
  • First Steps to Re-Observation of the Hipparcos/Tycho Stars by Ground-Based AMCs (A. Kovalchuk et al.)  [PDF]
  • Future Control of the Hipparcos Frame using MERLIN (L.V. Morriso)  [PDF]
  • The Hipparcos Data and Resolving the Problems in the Northern Polar Region (L.G. Taff et al.)  [PDF]
  • Check on JPL DExxx using Hipparcos and Tycho Observations (L.V. Morrison et al.)  [PDF]
  • The NPM and SPM Contributions to the Hipparcos Proper-Motion Link (I. Platais et al.)  [PDF]
  • Impact of Hipparcos Data on Astrometric Reduction of Solar System Bodies (A. Fienga et al.)  [PDF]
  • Astrolabe Observations of the Sun on the Hipparcos Reference Frame (A.H. Andrei et al.)  [PDF]
  • Robust Estimation with Application to Hipparcos Minor Planet Data (M.L. Bougeard et al.)  [PDF]
  • Determination of the Masses of Minor Planets (J.-F. Bange, A. Bec-Borsenberger)  [PDF]
  • Determination of Limb-Darkening from Hipparcos Observations (D. Hestroffer, F. Mignard)  [PDF]
  • UCAC-S: a New High Precision, High Density Astrometric Catalogue in the S. Hemisphere (N. Zacharias et al.) [PDF]
  • Astrometric CCD Positions for Extragalactic Radio Sources (M. Assafin et al.)  [PDF]
  • Work on Astrometry from 1993 - 1996 at Shanghai Astronomical Observatory (J.L. Zhao, J.J. Wang)  [PDF]
  • Using the Tycho Catalogue for AXAF (P.J. Green et al.) [PDF]
  • The Use of the Hipparcos and Tycho Catalogues in Flight Dynamics Operations at ESOC (A. Batten et al.) [PDF]
  • Hipparcos as Input Catalogue for the GOMOS ENVISAT Instrument (G. Ratier et al.)  [PDF]
  • Optical Monitoring of Variable Sources from Space: the OMC onboard INTEGRAL (A. Giménez et al.)  [PDF]
  • Application Possibilities for the Hipparcos Intermediate Astrometric Data (F. van Leeuwen)  [PDF]

Session 3-4: Stellar Physics

  • The Luminosity Calibration of the HR Diagram Revisited by Hipparcos (A.E. Gómez et al.)  [PDF]
  • The Luminosities and Diameters of Mira Variables from Hipparcos Parallaxes (P.A. Whitelock et al.)  [PDF]
  • The HR Diagram in the Plane log(T_eff), M_bol of Pop. II Stars with Hipparcos Parallaxes (R. Cayrel et al.) [PDF]
  • Surface Gravities of Metal-Poor Stars Derived from Hipparcos Parallaxes (P.E. Nissen et al.)  [PDF]
  • The Age and Helium Content of the Hyades Revisited (Y. Lebreton et al.)  [PDF]
  • Searching for Wolf-Rayet and O-Star Runaways using Hipparcos Proper Motions (A.F.J. Moffat et al.)  [PDF]
  • Absolute Magnitudes of Chemically Peculiar Stars (P. North et al.) [PDF]
  • Evolutive Stage of the Am-type stars (B. Nicolet)  [PDF]
  • Binary Star Masses from Hipparcos (S. Söderhjelm et al.)  [PDF]
  • Using Hipparcos Transit Data for Aperture Synthesis Imaging (C. F. Quist et al.)  [PDF]
  • A Statistical Study of the Visual Double Stars in the Tycho Catalogue (J.-L. Halbwachs et al.)  [PDF]
  • Classification of Red Variables (J.A. Mattei et al.)  [PDF]
  • New Aspect of Long-Period Variable Stars from Hipparcos: First Results (M.O. Mennessier et al.)  [PDF]


  • The Properties of Main-Sequence Stars from Hipparcos Data (N. Houk et al.) [PDF]
  • Systematic Effects on Photometric Parallaxes for FGK Dwarfs and Subdwarfs (C. Jordi et al.)  [PDF]
  • Unbiased Luminosity Calibrations for Hipparcos Data (F. Arenou, A. E. Gómez) [PDF]
  • The Hipparcos Calibration of Absolute Magnitudes in the Vilnius Photometric System (V. Malyuto et al.)  [PDF]
  • Definition of the Pleiades Main Sequence in the Hertzsprung-Russell Diagram (C.S. Hansen-Ruiz, F. van Leeuwen) [PDF]
  • Kinematic Analysis of Cepheus OB3 (E. Trullols et al.)  [PDF]
  • Luminosities and Velocities of OBN Stars from Hipparcos (M. Mammano et al.)  [PDF]
  • Calibration of Luminosity of Hot Stars (Preliminary Results) (B. Nicolet)  [PDF]
  • Absolute Magnitude Calibration of Geneva Photometry: B-type Stars (N. Cramer)  [PDF]
  • Photometric Variability of B and Be Stars (A.M. Hubert et al.)  [PDF]
  • Absolute Magnitudes of Be Stars (D. Briot et al.)  [PDF]
  • Some Hipparcos Results for Late-Type Stars (M.A.T. Groenewegen et al.)  [PDF]
  • Some Hipparcos Results for Late-Type Stars: Table 1 from this paper  [PDF]
  • The Hipparcos HR Diagram of S Stars: Probing Nucleosynthesis and Dredge-Up (S. Van Eck et al.)  [PDF]
  • Calculating the Mass of Horizontal-Branch Stars with Hipparcos (K.S. de Boer et al.)  [PDF]
  • The HR Diagram of G5-M3 Stars near the Giant Branch (D. Egret et al.)  [PDF]
  • Metal Abundances of One Hundred Hipparcos Dwarfs (R.G. Gratton et al.)  [PDF]
  • The HR Diagram of Metal-Deficient Stars (A. Bartkevicius et al.) [PDF]
  • The Evolutionary Status of High-Lithium, High-Activity Cool Dwarfs (F. Favata et al.)  [PDF]
  • A First Hipparcos Contribution to the Lithium Problem (F. Crifo et al.)[PDF]
  • Barium Stars: Luminosity and Kinematics from Hipparcos Data (X. Luri et al.)  [PDF]
  • Hipparcos Observations of Pre-Main-Sequence Stars (R. Wichmann et al.)  [PDF]
  • The Lower Part of the Instability Strip: Evolutionary Status of Delta Scuti Stars (Y.Y. Liu et al.) [PDF]
  • Delta Scuti Stars in the HR Diagram (P. North et al.) [PDF]
  • White Dwarfs Observed by Hipparcos (G. Vauclair et al.)  [PDF]
  • Testing the White Dwarf Mass-Radius Relation with Hipparcos (J.L. Provencal et al.)  [PDF]
  • The HR Diagram for Late-Type Nearby Stars as a Function of Helium and Metallicity (Y. Lebreton et al.)  [PDF]
  • Oxygen-Rich Mira Variables: Near Infra-Red Luminosity Calibrations (R. Alvarez et al.) [PDF]
  • Detection of Rapid Photometric Variations in Mira-type Variables (P. de Laverny et al.) [PDF]
  • Hipparcos Distances of X-ray Selected Stars: Implications on their Nature (G. Micela et al.) [PDF]
  • The Luminosity and Kinematics of a Sample of Hot Subdwarfs (R. Viotti et al.) [PDF]
  • Beta Hydri (G2 IV): A Revised Age for the Closest Subgiant (D. Dravins et al.) [PDF]
  • Hipparcos, VLA and CCD Observations of Cyg OB2 No. 5 (M.E. Contreras et al.)  [PDF]
  • Hipparcos Astrometry and Radio Mapping of Peculiar Binary Systems (R. Viotti et al.)  [PDF]
  • Effective Temperature Determination of Eclipsing Binaries (C. Jordi et al.)  [PDF]
  • Hipparcos Observations of Symbiotic Stars (U. Munari et al.) [PDF]
  • Masses of Astrometric Binaries (C. Martin, F. Mignard)  [PDF]
  • On the Mass-Luminosity Relation (P. Lampens et al.)  [PDF]
  • Triple Star Parameters and Masses (S. Söderhjelm, L. Lindegren)  [PDF]
  • Absolute Magnitudes of Several Peculiar Star Groups (C. Jaschek et al.)  [PDF]
  • The Bolometric Correction m_bol - Hp (R. Cayrel et al.)  [PDF]
  • Beta Pictoris: Back to the ZAMS (F. Crifo et al.)  [PDF]
  • Search for Variables in the Tycho Epoch Photometry Annex B (S. Friedrich et al.)  [PDF]
  • Accurate Two-Colour Photometry and Astrometry for Hipparcos Double Stars (E. Oblak et al.)  [PDF]
  • Utilisation of Hipparcos Data for Distance Determinations: Error, Bias and Estimation (X. Luri, F. Arenou)  [PDF]
  • Low-Resolution Spectroscopy of RR Lyrae Stars in the Hipparcos Input Catalogue (D. Martínez-Delgado et al.)  [PDF]
  • Absolute Magnitude Calibration for the W UMa-type Contact Binary Stars (S.M. Rucinski et al.) [PDF]
  • Masses and Gravities of Blue Horizontal Branch (BHB) Stars Revisited (U. Heber et al.)  [PDF]
  • The Classification of Binary Stars with Composite Spectra (J.M. Carquillat et al.) [PDF]


Session 5-6: Galactic Physics

  • Photometric Variability in the HR Diagram (L. Eyer, M. Grenon)  [PDF]
  • The Kinematics of Main Sequence Stars from Hipparcos Data (J.J. Binney et al.)  [PDF]
  • Kinematic Evidence for Propagating Star Formation Induced by OB Associations (F. Comerón et al.)  [PDF]
  • The Luminosity Function of Main Sequence Stars within 80 Parsecs (C.A. Murray et al.)  [PDF]
  • The Metallicity Distribution of Late-Type Dwarfs and the Hipparcos HR Diagram (M. Haywood et al.)  [PDF]
  • Structure and Evolution of Nearby OB Associations (P.T. de Zeeuw et al.)  [PDF]
  • Synthetic Diagrams for the Interpretation of SFR and IMF (G. Bertelli et al.) [PDF]
  • The Kinematics and Nature of Gould's Belt - a 30 Myr Old Star Forming Region (P.O. Lindblad et al.)  [PDF]
  • Young Stars: Irregularities of the Velocity Field (J. Torra et al.)  [PDF]
  • Identification of Moving Groups in a Sample of Early-Type Main-Sequence Stars (F. Figueras et al.)  [PDF]
  • Eggen's Moving Groups: Fact or Fiction? (J. Skuljan et al.)  [PDF]
  • Space Motions and Orbits of Globular Clusters (P. Brosche et al.)  [PDF]
  • Where does the Dark Halo of the Galaxy End? (M. Miyamoto, T. Tsujimoto)  [PDF]
  • Candidates to the Catalogue of Nearby Stars from Tycho Astrometry and Photometry (V.V. Makarov) [PDF]  


  • The Distribution of Nearby Stars in Phase Space Mapped by Hipparcos (E. Chereul et al.)  [PDF]
  • Distributions and Motions of Nearby Stars defined by Objective Prism Surveys and Hipparcos (P.D. Hemenway et al.)  [PDF]
  • Determination of the Luminosity Function up to M_v=9 (J. Palasi)  [PDF]
  • Stellar Distribution Functions in the Solar Neighbourhood (K. Van Caelenberg, H. Dejonghe)  [PDF]
  • Estimation of the Local Mass Density from an F-Star Sample Observed by Hipparcos (H-A. Pham)  [PDF]
  • Determination of the IMF in the Solar Neighborhood between 1.2 and 4 M_solar (V. Sabas ) [PDF]
  • Analysis of Seven Nearby Open Clusters using Hipparcos Data (N. Robichon et al.)  [PDF]
  • New Results for Three Nearby OB Associations (R. Hoogerwerf et al.)[PDF]
  • Improved Methods for Identifying Moving Groups (J.H.J. de Bruijne et al.)  [PDF]
  • Absolute Proper and Space Motions of Globular Clusters (M. Geffert et al.)  [PDF]
  • Kinematics and M_v Calibration of K and M Dwarf Stars (A.R. Upgren)  [PDF]
  • Kinematics of Subdwarfs based on Hipparcos Parallaxes and Proper Motions (H. Jahreiss et al.)  [PDF]
  • First Steps Toward the Determination of the Escape Velocity in the Solar Neighbourhood (L. Meillon et al.)  [PDF]
  • Populations among High-Velocity Early-Type Stars (F. Royer)  [PDF]
  • Kinematics of RR Lyrae Stars based on Hipparcos Proper Motions (R. Wielen)  [PDF]
  • The Extinction in the Solar Neighbourhood from the Hipparcos Data (J.-L. Vergely et al.)  [PDF]
  • A New Tool for Studying Galactic Structure (R. Drimmel et al.)  [PDF]
  • Computing the Tilt of the Velocity Ellipsoid for a Galaxy Mass Model (F. Bancken)  [PDF]
  • The Motion of the Magellanic Clouds (P. Kroupa, U. Bastian)  [PDF]
  • A Search for Stars Passing Close to the Sun (J. García-Sánchez et al.)  [PDF]
  • Kinematics of Disk Stars in the Solar Neighbourhood (A.E. Gómez et al.)  [PDF]


Session 7: Cosmic Distance and Age Scale

  • Hipparcos Parallaxes and Proper Motions of Cepheids and their Implications (M.W. Feast, P.A. Whitelock)  [PDF]
  • Distances for 17 Nearby Galaxies based on the Hipparcos Calibration of the P-L Relation (G. Paturel et al.)  [PDF]
  • The Absolute Magnitudes of RR Lyrae Stars (J. Fernley et al.)  [PDF]
  • The Absolute Magnitude of RR Lyrae Stars (T. Tsujimoto et al.)  [PDF]
  • The Distance of the Pleiades and Nearby Clusters (J.-C. Mermilliod et al.)  [PDF]
  • Distances and Absolute Ages of Galactic Globular Clusters from Subdwarf Parallaxes (R.G. Gratton et al.)  [PDF]


  • Hipparcos Parallaxes of the Nearest Cepheids - Implicative of Binarity (L. Szabados)  [PDF]
  • Age and Morphology of the Main Sequence from Hipparcos HR Diagram Data (M. Badiali et al.)  [PDF]

Session 8-10: Selected Highlights

  • Runaway Stars and the Force Perpendicular to the Galactic Plane (P.O. Lindblad et al.)  [PDF]
  • Distribution of Nearby Stars in Phase Space Mapped by Hipparcos (M. Crézé et al.)  [PDF]
  • The Impact of Hipparcos on the Catalogue of Nearby Stars (H. Jahreiss, R. Wielen)  [PDF]
  • The Hyades: Distance, Structure and Dynamics (A.G.A. Brown et al.)  [PDF]
  • The Impact of Hipparcos on the Old Problem of the Helium Content of the Hyades (G. Cayrel de Strobel et al.)  [PDF]
  • The Parallax of the Pleiades Cluster (F. van Leeuwen, C.S. Hansen Ruiz)  [PDF]
  • Coravel Radial Velocity Surveys of Late-Type Stars of the Hipparcos Mission (S. Udry et al.)  [PDF]
  • Hipparcos Subdwarfs and Globular Clusters: Towards Reliable Absolute Ages (F. Pont et al.)  [PDF]
  • Astrometric Indications of Brown Dwarfs based on Hipparcos Data (H.-H. Bernstein)  [PDF]
  • The Importance of Positioning Isolated Neutron Stars: the Case of Geminga (P.A. Caraveo et al.) [PDF]
  • The Galactic Warp in Hipparcos (R.L. Smart et al.)  [PDF]
  • Towards an Improved Model of the Galaxy (J. Holmberg et al.)  [PDF]
  • Statistical Astrometry based on a Comparison between FK5 and Hipparcos (R. Wielen et al.)  [PDF]
  • Astrometric Radial Velocities from Hipparcos (D. Dravins et al.)  [PDF]
  • The Educational Potential of the Hipparcos Database (J.R. Percy)  [PDF]

Session 11: Prospects of Microarcsec Astrometry: the Science

  • The Scientific Goals of the GAIA Mission (M.A.C. Perryman et al.)  [PDF]
  • The Scientific Basis for the Space Interferometry Mission (D. Peterson, M. Shao)  [PDF]
  • GAIA and the Hunt for Extra-Solar Planets (M.G. Lattanzi et al.)  [PDF]
  • The Strömvil Seven-Colour Photometric System for GAIA (V. Straizys et al.)  [PDF]
  • A Relativistic Model for the GAIA Observations (F. De Felice et al.)  [PDF]
  • Parallel Acquisition of Radial Velocities and Metallicities for the GAIA Mission (F. Favata, M.A.C. Perryman)  [PDF]

Session 12: Prospects of Microarcsec Astrometry: the Projects

  • DIVA - Towards Microarcsecond Global Astrometry (S. Röser et al.)  [PDF]
  • Optical Design for GAIA (E. Høg et al.)  [PDF]
  • Global Astrometry with the Space Interferometry Mission (A. Bodenet al.)  [PDF]
  • An Optical/Infrared Astrometric Satellite Project LIGHT (M. Yoshizawa et al.)  [PDF]
  • GAIA: Global Astrometric Interferometer for Astrophysics (L. Lindegren, M.A.C. Perryman)  [PDF]


  • A New Optical Configurations Proposed for GAIA (M. Cecconi et al.)  [PDF]
  • Lagrangian L2 or Geostationary Orbit: A System Level Trade-Off for the GAIA Mission (O. Pace)  [PDF]
  • Opto/Mechanical Analysis for the Space Interferometry Project GAIA (M. Cecconi et al.)  [PDF]
  • Simulated Dispersed Fringes of an Astrometric Space Interferometry Mission (R.-D. Scholz et al.)  [PDF]
  • Use of Conjugate Gradient Methods for the Great-Circle Reduction (A. Ilin)  [PDF]
  • Large-Scale Distortions of Hipparcos-like Coordinate Systems (V.V. Makarov)  [PDF]
  • Astrometric and Photometric Performance of the Astrometric Interferometer Satellite DIVA (U. Bastian, R.-D. Scholz)  [PDF]
  • Project STRUVE (A.E. Ilin et al.)  [PDF]
  • GAIA Feasibility: Current Research on Critical Aspects (M. Gai et al.)  [PDF]