Fundamental stellar properties : the interaction between observation and theory : proceedings of the 189th Symposium of the International Astronomical Union, held at the Women's College, University of Sydney, Australia, 13-17 January 1997

This Symposium began with a proposal for a meeting to honour Emer­ itus Professor Robert Hanbury Brown on the occasion of his 80th birthday. He requested that any such meeting should be on a topic that would be of benefit to the Sydney University Stellar Interferometer (SUSI) program. With SUSI and several other high angular resolution instruments either in operation or coming on line within the next decade, and with advances in astrometry, spectroscopy and in theoretical models of stellar atmospheres and interiors, it appeared to be both appropriate and timely to hold a symposium on "Fundamental Stellar Properties: the Interaction between Observation and Theory. " The emphasis of the meeting was on the critical assessment of the qual­ ity, accuracy, and prospects for improvement of the observational data and theoretical models, on the outstanding problems in stellar astrophysics, and on the feasibility of achieving the observational and theoretical advances required for their solution. Invited papers comprised the major part of the oral program and the speakers responded to the challenge issued by the Scientific Organising Committee to critically review the current status and prospects for their area of expertise. The Symposium was opened by the Chancellor of the University of Sydney, Emeritus Professor Dame Leonie Kramer, who welcomed the 126 participants from 22 countries on behalf of the University. The oral program included . 52 invited reviews and papers and 10 contributed papers. Front Matter....Pages i-xxix Front Matter....Pages 1-1 Introductory Overview....Pages 3-6 Front Matter....Pages 7-7 The Hipparcos Results....Pages 9-18 Review of CCD Parallax Measurements....Pages 19-24 Stellar Distances by the Baade-Wesselink Method....Pages 25-28 Front Matter....Pages 29-29 Stellar Angular Diameter Measurements by Interferometry....Pages 31-38 Astrometry Using Interferometry at Optical Wavelengths....Pages 39-44 Lunar Occultation Measurements of Stellar Angular Diameters....Pages 45-50 Stellar Radii....Pages 51-58 Front Matter....Pages 59-59 The Visual and Infrared Flux Calibrations....Pages 61-66 Review of the Ultraviolet Flux Calibration....Pages 67-72 The Bolometric Luminosities of Stars....Pages 73-82 The Colours of the Sun....Pages 83-88 The ISO-SWS Flux Standard Stars: Synthetic Spectra and Observations....Pages 89-92 UV Energy Distributions of Active Cool Stars....Pages 93-96 Front Matter....Pages 97-97 Precise Stellar Mass and Mass-Luminosity Data....Pages 99-108 Interferometric Measurements of Binaries....Pages 109-114 Determining the Masses of White Dwarfs in Magnetic Cataclysmic Variables from X-Ray Observations....Pages 115-118 Empirical Surface Gravities....Pages 119-124 Front Matter....Pages 125-125 Cool Star Empirical Temperature Scales....Pages 127-136 The Effective Temperatures of Hot Stars....Pages 137-146 Front Matter....Pages 125-125 The Stellar Temperature Scale from Angular Diameters and Flux Distributions....Pages 147-152 Stellar Effective Temperatures through the Infrared Flux Method....Pages 153-158 Tests of Effective Temperature — Colour Relations....Pages 159-168 Front Matter....Pages 169-169 Review of Abundances for Mid-Teff Range Stars....Pages 171-178 The Broadening of Metallic Lines in Cool Stars....Pages 179-183 Abundances of the Elements in the Halo Stars, Interaction between Observation and Theory....Pages 185-192 Abundance Anomalies in Globular Clusters....Pages 193-202 Stellar Parameters in the Bulge Cluster NGC 6553....Pages 203-206 Front Matter....Pages 207-207 Non-LTE Line Blanketed Atmospheres for Hot Stars....Pages 209-216 Progress on Model Atmospheres and Line Data....Pages 217-226 Atmosphere Models for Very Low Mass Stars, Brown Dwarfs and Exoplanets....Pages 227-233 Parameter Identification — A New Way of Assessing Errors in Stellar Atmosphere Analysis....Pages 235-238 Atmospheric Motions and Granulation in Cool Stars — Observations and Theory....Pages 239-244 Chromospheres, Activity and Magnetic Fields....Pages 245-252 Pulsating Stellar Atmospheres....Pages 253-260 What Do We Do when Models Don’t Fit? On Model Atmospheres and Real Stellar Spectra....Pages 261-276 Front Matter....Pages 277-277 Observing Solar-Like Oscillations....Pages 279-284 Constraints on Stellar Interior Physics from Helioseismology....Pages 285-292 Bulge δ Scuti Stars in the Macho Database....Pages 293-298 Properties of Cepheids and Long-Period Variables....Pages 299-304 Front Matter....Pages 277-277 RR Lyrae Variables....Pages 305-310 Front Matter....Pages 311-311 The Evolution of Massive Stars....Pages 313-322 Evolution of Intermediate Mass Stars....Pages 323-330 Theory of Low Mass Stars, Brown Dwarfs and Extra-Solar Giant Planets....Pages 331-340 Front Matter....Pages 341-341 Rotation: A Fundamental Parameter of Massive Stars....Pages 343-348 The Effect of Rotation on RGB Surface Abundances....Pages 349-354 The Importance of Helium and Metals Diffusion in Stars....Pages 355-360 Front Matter....Pages 361-361 Non-Variable Horizontal-Branch Stars....Pages 363-368 NLTE Analyses of PG 1159 Stars: Constraints for the Structure and Evolution of Post-AGB Stars....Pages 369-372 The Asymptotic Giant Branch....Pages 373-380 Cool White Dwarfs: Cooling Theory and Galactic Implications....Pages 381-388 Theory, Observation and Experiment: Stellar Hydrodynamics....Pages 389-394 Summary and Review: Interaction of Observations and Theory of Stellar Interiors....Pages 395-404 Front Matter....Pages 405-405 Stellar Chemical Evolution....Pages 407-416 Chemical Evolution of Galaxies — Challenges for Stellar Astronomy....Pages 417-426 Front Matter....Pages 427-427 New Model Atmosphere Analyses of Cool White Dwarfs: A Revised Luminosity Function and Constraints on the Age of the Galaxy....Pages 429-432 Hipparcos Subdwarfs and Globular Cluster Ages: Towards Reliable Absolute Ages....Pages 433-438 Globular Cluster Ages: Are They Converging?....Pages 439-448 Front Matter....Pages 449-449 Achievements and Prospects....Pages 451-457 Back Matter....Pages 459-478 This Symposium on fundamental stellar properties was held to honour Emeritus Professor Robert Hanbury Brown on the occasion of his 80th birthday. The speakers described recent advances in interferometry, astrometry, spectroscopy and in theoretical models of stellar atmospheres and interiors. The emphasis was on the critical assessment of the quality, accuracy, and prospects for improvement of the observational data and theoretical models, on the outstanding problems in stellar astrophysics, and on the feasibility of achieving the observational and theoretical advances required for their solution. These Proceedings will be of interest to researchers and graduate students in all fields of astrophysics Proceedings of the 189th Symposium of the International Astronomical Union, held at the Women's College, University of Sydney, Australia, 13-17 January 1997 Edited By T.r. Bedding, A.j. Booth, And J. Davis. Includes Bibliographical References And Indexes.