Astronomical observation: observatories, equipment and methods

The nonlinear theory of oscillating systems brings new aspects into the study of variable stars.

In recent years there has been a steadily increasing cross-fertilization between cosmology and particle physics, on both the theoretical and experimental levels.

In this Symposium, researchers specializing in pulsation, rotation, magnetic fields and stellar winds are brought together for the first time in order to broaden our understanding of O and B stars.

The NATO Advanced Study Institute "e;Cosmological Aspects of X-Ray Clus- ters of Galaxies"e; took place in Vel en , Westphalia, Germany, from June 6 to June 18, 1993.

This History has its origin in a suggestion, made in September 1990 by former IAU General Secretary Derek McNally, who felt "e;that a 75 year history of the Union was needed before the col- lective memory of those who knew the Union before the Second World War vanished.

The IAU Colloquium No.

Outstanding progress in near-infrared detection technology and in real-time image processing has led astronomers to start undertaking all-sky surveys in the 1--2 mum range (project DENIS in Europe and 2MASS in the U.

The area of diffuse astrophysical media is enormous and ranges over circum- stellar to extragalactic scales.

In the early summer of '89 a very informal meeting on the bulge of our Galaxy was held in Leiden.

Accretion disks in astrophysics represent the characteristic flow by which compact bodies accrete mass from their environment.

Our Galactic center's proximity allows astronomers to study physical pro- cesses within galactic nuclei at a level of detail that will never be possible in the more distant, but usually also more spectacular, extragalactic systems.

This special issue of the international journal of cosmic physics, Astrophysics and Space Science, contains invited contributions delivered at the Second IEEE International Workshop on Plasma Astrophysics and Cosmology, held from 10 to 12 May 1993 in Princeton, New Jersey.

The ability of storing, managing, and giving access to the huge quantity of data collected by astronomical observatories is one of the major challenges of modern astronomy.

IAU Symposium No.

The mystery of the diffuse interstellar bands has been variously a curiosity, a co- nundrum, and a nuisance for astronomers in the seven decades since the features were first noticed, but recently they have become a forefront issue in astrophysics.

A revolution similar to that brought by CCDs to visible astronomy is still ahead in IR and submillimeter astronomy.

Cataclysmic Variables (CVs) are well furnished laboratories in which one can investigate a number of important physical processes.

This specialized workshop was conceived during the workshop on "e;Non- isotropic and Variable Outflows from Stars"e;, which was held at the Space Telescope Science Institute in October, 1991.

Freja is a joint Swedish and German satellite, launched on October 6, 1992 and orbiting at 600--1750 km, covering the lower part of the auroral acceleration region.

In this IAU Symposium on Wolf--Rayet stars, binary aspects received ample attention, notably because of the recognition that many observations of spectral and photometric variability at all accessible wavelengths are related to colliding winds or other forms of wind interaction.

The launch in October 1990 of the joint ESA-NASA Ulysses mission marked the start of a new era in the study of the heliosphere.

The conference recorded in this volume was one of the events organised to celebrate the centenary of the (re)establishment of the Royal Observatory, Edinburgh, on Blackford Hill in 1884.

This book, which has been in the making for some eighteen years, would never have begun were it not for Dr.

The concept of Stellar Populations has played a fundamental role in astronomy in the last few decades.

An up-to-date presentation of the progress and current problems in the early universe, cosmic microwave background radiation, large scale structure formation, and the interplay between them.

Astrometry is on the threshold of great changes due to the fact that this decade, alone, is witnessing an improvement of stellar positions equivalent to the total improvement of the previous two centuries.

This volume consists of invited lectures and seminars presented at the NATO Advanced Study Institute "e;The Gamma Ray Sky with COMPTON GRO and SIGMA"e; , which was held at the Centre de Physique Theorique of Les Houches (France) in January / February 1994.

The 15th ESLAB symposium was held at the end of June 1981 in Amsterdam with the topic being X-ray astronomy.

In this volume a thorough review is given of waves in dusty plasmas, a fascinating new domain combining plasmas and charged dust, two omnipresent ingredients of the Universe.

Jacobus Cornelius Kapteyn (1851-1922) of the University of Groningen was one of the foremost astronomers of his time, resulting in a leading role internationally of Dutch astronomy throughout the twentieth century.

Gaseous nebulae offer outstanding opportunities to atomic physicists, spectroscopists, plasma experts, and to observers and theoreticians alike for the study of attenuated ionized gases.

This volume is the proceedings of IAU Symposium No.

This written account of the Symposium on Planetary Nebulae was prepared from manuscripts submitted by the participants.

IAU Symposium Number 52 on Interstellar Dust and Related Topics was held at Albany, N.

The International Association of Geochemistry and Cosmochemistry was organized in 1967, and held its first meeting at UNESCO Headquartels that year in association with its symposium on The Origin and Distribution of the Elements'.

The publication of this book is extremely timely, for the next major advances in manned space flight after Project Apollo will most likely be made in earth orbital operations.

The XIIlth General Assembly of the International Astronomical Union, held in Prague from 22 to 31 August, 1967, brought together more than 1800 active astron- omers from 40 countries.

The following text forms the proceedings of a conference.

The subjects of resonance and stability are closely related to the problem of evolution of the solar system.

Socrates knew all that was known by his contemporaries.

The International Astronomical Union Colloquium on Stellar Rotation was held at the Ohio State University in Columbus, Ohio, U.

The European Space Research Organisation put its first satellite into orbit in March 1968 and was successful with two more before the end of that year.

The idea of the organization of a Symposium on Spiral Structure came at a special meeting of Commission 33 on Spiral Structure during the 12th General Assembly of the IAU in Prague, 1967.