Bücher der Reihe Astrophysics and Space Science Library

Written by experts who created the field, this volume explores uncharted scientific territory, with articles discussing the effect of our galactic environment on the heliosphere, planetary system and Earth.

Invited Papers presented at the IAU Colloquium No. 29, held in Budapest, September 1-5, 1975

Anyone who doubts that astronomy is enjoying a golden age has only to browse the pages of Organizations and Strategies in Astronomy, Vol.

This unique volume forestalls the scientific injustice that could have been inflicted on William Gascoigne. The captivating narrative tracks the gradual recovery of the 17th-century astronomer's trailblazing work on the telescopic sight and the micrometer.

Fully updated and revised, this second edition of the classic text on plasma astrophysics covers all the fundamentals and includes new sections on subjects such as plasma heating by reverse current, the moment equations, and the Grad-Shafranov equation.

The new edition of this second volume in the set retains a focus on reconnection and flares, but features numerous revisions and updates, including fresh material on classification of zeroth points, motions of the coronal HXR sources, and much else.

The primary inducement for organizing an international Conference on 'Image Processing Techniques in_Astronomy' was the fact that the recording microdensitometer VAMP ('Vol Automatische Micro Photometer') of the Utrecht Astronomical Institute was operative for a few years. The necessity of comparing the in­ strument and its performance with similar instruments nowadays available at many other institutes, was stimulating enough to organize a meeting on the above subject. It took place in Utrecht on March 25, 26 and 27, 1975. The Scientific Organizing Committee consisted of J. Borgman (Groningen), R.B. Dunn (Sacramento Peak), H. Elsasser (Heidelberg), L.D. de Feiter, T. de Groot, J.R.W. Heintze, C. de Jager, H. Nieuwenhuijzen (Utrecht) and W. Wiskott (Geneve). About 175 scientists from 14 countries participated in the meeting which appeared to be successful and offered a good opportunity of exchanging information and comparing experiences. The VAMP was bought with financial support of the Utrecht University and the Netherlands Foundation for Scientific Research (Z.W.O.). The conference was organized with financial support from The Netherlands Ministry of Science and Education, The European Southern Observatory, The Leids Kerkhoven-Bosscha Fonds, The Astronomical Institute of Utrecht, to which Institutes and Organisations we express our sincere gratitude. C. de Jager H. Nieuwenhuijzen editors PAR T WHAT INFORMATION DO WE NEED, FOR WHICH ASTRONOMICAL PROBLEM? ASTROMETRY K. Aa. Strand U. S. Naval Observatory Washington, D. C, INTRODUCTION Considerable progress has taken place in astrometry over the past two decades.

Understanding the growth and destruction of dust, its internal evolution, as well as the optical properties and the detection of nanoparticles is of fundamental importance for astrophysical research.This book provides a focused description of the current state of research and experimental results concerning nanodust in the solar system.

The 50th anniversary of the discovery of quasars in 1963 presents an interesting opportunity to ask questions about the current state of quasar research.

Proceedings of the Kona Symposium on Millimetre and Submillimetre Astronomy, held at Kona, Hawaii, October 3-6, 1988

The Andromeda Galaxy, or M31, is an attractive galaxy for astronomers. It is close to us, it is of about the size of our galaxy, it provides some intriguing observational puzzles because the galaxy is nearly edge-on, and many objects can be studied in detail, because they are still sufficiently bright.

Proceedings of a Workshop held in Ottawa, Canada, August 24-25, 1979

Proceedings of the Second Workshop, Held at the Ettore Majorana Centre for Scientific Culture, Advanced School of Astronomy, in Erice, Sicily, Italy, September 3-13, 1980

Proceedings of the Workshop held in Calgary, Canada from June 2-5, 1986

Proceedings of the Midnight Sun Conference, held in Tromso, Norway, July 1-8, 1987

The Science of Solar System Ices

Proceeding of the European Physical Society Study Conference, held in Noto (Sicily), Italy, June 16-20, 1988

Proceedings of the Fifth International Workshop of the Osservatorio Astronomico di Capodimonte, held in Sant'Agata Sui Due Golfi, Italy, September 3-7, 1990

Proceedings of the Summer Advanced Study Institute held at Graz, Austria, August 4-15, 1975

Proceedings of a Special IAU Session on Supernovae held on September 1, 1976 in Grenoble, France

Proceedings of the 99th Colloquium of the International Astronomical Union, held in Balaton, Hungary, June 22-27, 1987

Proceedings of the Symposium on `Neutral Clouds Near Hll Regions - Dynamics and Photochemistry' held in Penticton, British Columbia, 24-26 June 1981

Eclipsing Variables - What They can Tell Us and What We can do with Them The aim of the present book will be to provide an introduction to the inter pretation of the observed light changes of eclipsing binary stars and their analysis for the elements of the respective systems.

The general background of this monograph and the aim of it is described in detail in Chapter I. As stated in 1.7 it is written according to the principle that "when rigour appears to conflict with simplicity, simplicity is given preference", which means that it is intended for a rather broad public. Not only graduate students but also advanced undergraduates should be able to understand at least most of it. This monograph is the result of many years of inspiring discussions with a number of colleagues, for which I want to thank them very much. Especially I should mention the groups in Stockholm and La Jolla: in Stockholm, Dr Carl-Gunne Flilthammar and many of his collaborators, including Drs Lars Block, Per Carlqvist, Lennart lindberg, Michael Raadu, Staffan Torven, Miroslav Babic, and Itlgvar Axniis, and further, Drs Bo Lehnert and Bjorn Bonnevier, all at the Royal Institute of Technology. Of other col­ leagues in Sweden, I should mention Dr Bertel Laurent, Stockholm University, Dr Aina Elvius, The Stockholm Observatory, and Dr Bengt Hultqvist, Kiruna. In La Jolla my thanks go first of all to Dr Gustaf Arrhenius, who once invited me to La Jolla, which was the start of a most interesting collaboration; further, to Dr W. B.

Proceedings of the HEAD/AAS Meeting held in Cambridge, Mass., U.S.A., January 1980

Proceedings of the 63rd Colloquium of the International Astronomical Union, held at Grasse, France, May 22-27, 1982

Proceedings of a Symposium held in Austin, Texas, U.S.A., June 8-10, 1976

Recent advances in our understanding of instabilities in galactic type systems have led to an unravelling of some of the mysteries of what determines the form galaxies take. The book also includes a chapter discussing numerical simulation techniques, with attention paid to their limitations and to recent advances in this approach.

At the time of writing, in fact, books of this kind were not available with the exception of the excellent book by Bernard Pagel on "Nucleosynthesis and Chemical Evolution of Galaxies" (Cambridge University Press, 1997), and the subject of galactic chem ical evolution has appeared only as short chapters in books devoted to other subjects.

This development of higher quality and more sensitive equipment makes it very necessary to improve the accuracy of the measurements. This guide helps the astronomer and astronomy student to improve the quality of their photometric measurements and to extract a maximum of information from their observations.