Chemical Evolution from Zero to High Redshift: Proceedings of the Eso Workshop Held at Garching, Germany, 14-16 October 1998

ISBN-13: 9783662216972 / Angielski / Miękka / 2014 / 314 str.

Jeremy Walsh; Michael R. Rosa

Opis

With the new era of 8-10 m telescopes the power to spectroscopically examine the light of fainter and more distant targets has taken a 'photon' leap. It is now becoming routinely possible to obtain high signal-to-noise spectra of very distant objects and to attempt the determination of their abundances. The motivation for a workshop on this topic could be summarized thus: Do we understand enough about chemical abundances at zero redshift to trust any conclusions on chem- ical evolution at high redshift? Given our observational background in gaseous nebulae, we thought at first in terms of a workshop largcly devoted to the inter- stellar medium. However, we were encouraged by Jacqueline Bergeron and Alvio Renzini to pitch the theme much wider. The members of the Scientific Organiz- ing Committee (Francoise Combes, Don Garnett, Guinevere Kauffmann, Claus Leitherer, Danny Lennon, Max Pettini, Peter Shaver, Elena Terlevich and David Tytler), under the chair of John Mathis, made sure that we kept the conference broad in scope. We thank them for their encouragement and advice. Informally the working title for the conference thus became "High and low Z from low to high z" (or Z@O

Spis treści

Chemical Abundances of Local “Unevolved” Stars.- Supernova Nucleosynthesis: Models Versus Observations.- Abundance Gradients from Massive, Early-Type Stars: The Milky Way and Beyond.- Galactic H II Region Abundances.- Nebular Abundances from Recombination Lines.- Abundances in Interstellar Gas.- Constraints on the Nature of Interstellar Dust.- UV Spectral Synthesis for Iron Group Elements in A Supergiants.- Be Abundance in Li-Rich Giants.- The “Abundance Attractor” and the Primordial Lithium Enigma.- Field Blue Stragglers: The Chemical Composition Revisited.- The RGB Bump as a Metallicity Indicator for Globular Clusters.- Observing Boron in Metal-Poor Stars.- Oxygen Abundance in Solar-Type Stars.- Galactic Oxygen Abundance and Gradient from Photometry of H II Regions.- Small-Scale Structure in the Orion Nebula: Evidence for High-Density Condensations.- Chemical Abundances of Planetary Nebulae in the Galaxy and LMC.- Photo-Ionization Modelling of New Planetary Nebulae Within 2° of the Galactic Center.- The s-Process Elements Cadmium and Tin.- Abundance Ratios in Galactic Bulge Stars.- Abundance Gradients in the Galactic Disk: A Clue to Galaxy Formation.- Chemical Evolution of the Magellanic Clouds.- Detection of Extragalactic 15N: Nitrogen Nucleosynthesis and Chemical Evolution.- Chemical Abundances at Large Galactocentric Radii: A Progress Report.- Gas Flows and the Chemical Evolution of Galaxies.- Chemospectral Evolution of the Milky Way and of Spiral Disks.- NLTE Analyses of Magellanic Cloud B Stars.- Alpha-Elements Differential Abundances in M33 B-Supergiants.- Extragalactic Stellar Abundances: Oxygen in Extreme A-Type Supergiants.- Backyard Cosmology: Abundance Observations of Nearby Galaxies.- Empirical Calibrations of Nebular Abundances: The Sulphur Abundance Parameter.- Abundances in Spiral and Irregular Galaxies in the Local Universe.- Heavy Element Abundances in the Most Metal Deficient Dwarf Galaxies.- Chemical Evolution of Low Mass Disc Galaxies.- On the Oxygen Abundance Deficiency in Spiral Galaxies.- Spectrophotometric Analysis of HII Regions in the Galaxy NGC 4258.- Diffuse Warm and Hot Gas in I Zw 18.- The Role of Starbursts in the Chemical Evolution of Galaxies.- Metallicity of Dwarf Galaxies in Clusters.- Chemical Evolution and Abundance Ratios in Dwarf Irregular Galaxies.- Constraints on the Chemical Evolution of Nearby Dwarf Galaxies from CMDs.- Elliptical Galaxy Chemical Evolution.- Effects of the Environment on Star Formation and Abundances in Galaxies.- Chemical Evolution on the Scale of Clusters of Galaxies, and Beyond.- Enrichment of the Intracluster Medium.- Stellar Population in a High-Density Environment: Elliptical Galaxies in the Coma Cluster.- The Effects of Cluster Environment on the Chemical Evolution of Galaxies.- The Chemical Composition of Star-Forming Galaxies at High Redshift.- Dust and Molecules at High Redshift.- Molecules in the Shell of Quasars 1556+3517 and 0840+3633.- The N V/C IV Ratio in High-Redshift Radio Galaxies.- Element Abundances at High Redshifts.- Early Metal Formation and the Intergalactic Medium.- Predicting Spectral Properties of DLA Galaxies.- Search for a High-Redshift Damped Lyman-Alpha Absorber with NICMOS.- The Contribution of Galaxies to the Ionising Background Radiation.- Origin of the Continuum in High-Redshift Radio Galaxies.- Element Abundances in Damped Lyman-Alpha Quasar Absorbers.- Interpreting the Redshift Evolution of DLA Galaxies.- The Metal Systems in the Line of Sight Towards GB1759+7539.- The z = 1.6748 C I Absorber Toward the QSO PKS 1756+237.- DLA at Low and Intermediate Redshift.- Present and Forthcoming UV Missions.- Prospects for Chemical Evolution Studies in the Infrared.- Abundance Determinations Through Astrophysical X-Ray Spectroscopy.- Conference Summary.

Blurb

The observational and interpretive tools for the study of chemical evolution are starting to be mature enough that they can be applied with some confidence to extra-galactic systems and integrated populations at increasingly high redshift. This book is devoted to the study of the interplay between different methods of measuring chemical abundances with astrophysical models. Studies of chemical abundances and evolution from stars, inter-stellar medium and local group galaxies at zero redshift to distant galaxies, clusters of galaxies and inter-galactic medium at high redshift are presented. There are also synopses on progress in instrumentation for abundance determination.