Instituto de Astrofisica de Canarias
La Laguna, Tenerife, Canary Islands (Spain)
November 16th - 27th, 1998
Approach to Populations in Globular Clusters.
Ivan R. King. Univ. of California, USA
Populations and the History of the Galaxy.
Steven Majewski. Univ. of Virginia, USA
Clusters as a Test for Stellar Evolution.
Vittorio Castellani. Univ. of Pisa, Italia.
Abundances of Stars in Globular Clusters. Early Nucleosynthesis.
Raffaele Gratton. Obs. Astronomico di Padova, Italia.
Dynamics in Globular Clusters.
Rebecca A. W. Elson. Univ. of Cambridge, UK.
Stars in Globular Clusters.
Michael W. Feast. Univ. of Cape Town, South Africa.
Sources in Globular Clusters.
Ramón Canal. Univ. of Barcelona, Spain.
Clusters in Galaxies.
William E. Harris. McMaster Univ. Canada.
2.- Morphology of globular-clusters CMDs: The various branches of the CMD, and differences between individual clusters.
3.- The globular-cluster distance scale: A description of the various methods, the problems in each of them, and the contradictions that some of them pose. The essential role of the distance scale in the determination of ages.
4.- Luminosity functions (LFs) and mass functions (MFs): The photometric steps need in deriving and LF. Use of dynamical models in correcting from a small field to a global LF. The use of LFs in age/distance determinations.
5.- Very-low-mass stars in globular clusters: The pursuit of the bottom of the main sequence in NGC 6397. Estimation of the number of brown dwarfs. Possible observation of brown dwarfs by microlensing.
2.- Galactic structure from starcount analyses. The thin disk, Intermediate Population II, and halo density distributions. Luminosity functions. The extent of the Galaxy.
3.- Age, kinematical and abundance analyses of the thin disk, Intermediate Population II and halo from deep surveys and tracer surveys. Rotational velocities, abundance distributions. The thin disk/IPII interface. Age distribution of open and globular clusters.
4.- Dual halo scenarios. The division of the halo globular clusters into "young" and "old" halo systems and implications for the formation of the "dual halo". The second parameter problem and "young" halo globular clusters.
5.- Accretion and the Galactic halo. Discovery of "moving groups" of halo stars and possible moving groups of globular clusters. The Sgr galaxy and its system of globulars. The Magellanic Stream and the recent discovery of a tidel star stream thereform and implications for the Galactic halo. Alignments of globular clusters and Galactic satellites. The origin of "young" and second parameter globular systems.
ii)the problem of superadiabatic convection;
iii) the role of element diffusion.
3.- From models to observation: Cluster isochrones, the role of model atmospheres, using the luminosity function, old and young globulars as a test of stellar evolution, Synthetic clusters.
4.- RR Lyrae variables as a test of stellar models. Using double mode pulsators.
5.- Globular cluster ages. A theoretical scenario for the second parameter problem.
Chemical Abundances of Stars in Globular Clusters. Early Nucleosynthesis.
Raffaele Gratton. Osservatorio Astronomico di Padova. Italy.
2.- High dispersion analysis: methods.
3.- Results of abundance analysis for globular cluster stars: the abundance scale, element-to-
element ratios and their impact.
4.- Results of abundance analysis for globular cluster stars: abundance inhomogeneities.
5.- Abundance indices for globular cluster stars.
2.- Basic Theoretical Tools for Understanding Star Clusters
3.- Observations of Globular Clusters
4.- Modelling Globular Clusters
5.- Some Case Studies of Rich Star Clusters
Stars in Globular Clusters.
Michael W. Feast. Univ. of Cape Twon. South Africa.
2.- RR Lyrae Variables in Globular Clusters (1).
3.- RR Lyrae Variables in Globular Clusters (2).
4.- Mira, Semiregular and SRd Variables in Globular Clusters.
5.- Other Pulsating and Double Stars in Globular Clusters.
2.- Formation of neutron stars in globular clusters.
3.- Compact binaries in globular clusters.
4.- Formation of binaries containing neutron stars. The tidal capture mechanism.
5.- White dwarf/neutron star and X-ray binary/millisecond pulsar connections.
2.- Globular Cluster Systems in Other Galaxies: I. Specific Frequencies and Spatial Structures.
3.- Globular Cluster Systems in Other Galaxies: II. Metallicity Distributions and Mass Distributions.
4.- Formation Theories: Internal Influences.
5.- Formation Theories: External Influences.