Bøger i Astrophysics and Space Science Library serien

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.

Proceedings of the Joint Discussion-17 at the 23rd IAU General Assembly, organised by the Commission 41, held in Kyoto, Japan, August 25-26, 1997

Proceedings of a Conference held at UMIST, Manchester, U.K., September 21-24, 1987

At the same time, analysis of interaction between radiation and astrophysical plasmas under extreme conditions (strong magnetic fields of white dwarfs and neutron stars or strong gravitational fields in the vicinity of black holes) stimulates the development of plasma physics as a whole.

Proceedings of IAU Colloquium No. 59 held in Miramare, Trieste, Italy, September 15-19, 1980

Proceedings of the 64th Colloquium of the International Astronomical Union, held in Strasbourg, France, July 7-10, 1981

It was about fourteen years ago that some of us became intrigued with the idea of searching the sky for X-ray and gamma-ray sources other than the Sun, the only celestial emitter of high-energy photons known at that time.

Proceedings of the International Workshop held at Gakushi-Kaikan, Tokyo, Japan, April 14-15, 1980

Professor Zdenek Kopal is sixty-seven this year even though his scientific activity, enthusiasm and springy step hardly betray the ad­ vancement in years. He carne to Manchester as Professor of Astronomy thirty years ago after a very fruitful association of fourteen years with the Harvard Observatory. Much impressed with the young man, Harlow Shapley, who with characteristic insight had recognised in Kopal the qualities that have since made him an outstanding leader in ec1ipsing binary research, had invited him over as a Research Associate. In the subsequent decade Kopal set about the task of introducing analytical rigour in the solution of orbit al elements that hitherto had depended ex­ c1usively on the semigraphical procedures introduced by Russell and exploited fully by Shapley. These first efforts stimulated publication of the first of his many books on ec1ipsing variables; the Introductian ta the Study of Ec/ipsing Variables summarized these iterative methods and remains a c1assic in this field. Soon after the appearance of this volume in print, Kopal gave a course on this subject for the graduate students at Harvard. I was one of those who had the opportunity to attend it and learn much on the need of care and precision in the practice of photoelectric photometry and the importance of exploiting such data to the fullest extent with methods of increasing resolving power.

Proceedings of an International Workshop held in Torino, Italy, October 7-9, 1982

Proceedings of the International Workshop, Delhi, India, November 14-16, 1985

Light scattering and absorption by small homogeneous particles can be worked-out exactly for spheres and infinite cylinders. Accurately formed graphite spheres with radii close to O.02p,m could conceivably provide an explanation of this ultraviolet feature but no convincing laboratory preparation of such spheres has ever been achieved.

Proceedings of the Third ESRO Summer School in Space Physics, held in Alpbach, Austria, July 19-August 13, 1965

Based on the Symposium on the Magellanic Clouds, held in Santiago de Chile, March 1969, on the occasion of the Dedication of the European Southern Observatory

Here, Ed Salpeter introduced the terms "original mass function" and "original luminosity function", and estimated the pro- bility for the creation of stars of given mass at a particular time, now known as the "Salpeter Initial Mass Function", or IMF.

Starting from the language of plasma physics, from Maxwell's equations, this work guides the reader into the more specialized concepts of cosmic electrodynamics. It can also be useful for professional astronomers and for specialists, who investigate cosmic plasmas from space, as well as for those who are interested in modern astrophysics.

Proceedings of the 1996 INAOE Summer School of Millimeter-Wave Astronomy held at INAOE, Tonantzintla, Puebla, Mexico, 15-31 July 1996

Proceedings of a Symposium held in Philadelphia, Penn., USA, June 8-10, 1976

The astronomer Jan Hendrik Oort (1900-1992) left behind an extensive collection of notes and correspondence, both on his research and on matters that concerned him in a variety of official functions.

This is quite simply the first volume of its kind dedicated to the area of high time resolution astrophysics. High time resolution astrophysics (HTRA) is an important new window on the universe and a vital tool in understanding a range of phenomena from diverse objects and radiative processes.

Black hole gravitohydromagnetics (GHM) is developed from the rudiments to the frontiers of research in this book. This second edition of the book is updated throughout and contains a completely new chapter discussing the state-of-the-art.

Proceedings of the Yohkoh Fifth Anniversary Symposium held in Yoyogi, Tokyo, Japan, November 6-8, 1996

Proceedings of a Conference held at the University of California at Los Angeles, U.S.A., June 2--21, 1984

Edith Alicia Muller (1918-1995) was the IAU General Secretary from 1976 to 1979, the first woman to have this responsibility. Her fundamental work in solar physics concerned the chemical composition of the Sun, the time variation of its infra-red spectrum, and its thermal structure.

This volume contains the reviews and poster papers presented at the workshop Solar Convection and Oscillations and their Relationship: SCORe '96, held in Arhus, Denmark, May 27 - 31, 1996.

That piece 2 of art, a 1.8x 1.8m oil on canvas plus collage entitled Berinl in honour of the Danish explorer, gathers together many navigation-related themes of the time: Suns, Moons, planets, sky maps, astrolabes, small telescopes, as well as drawings, diagrams and charts of all kinds.

This review of the most up-to-date observational and theoretical information concerning the chemical evolution of the Milky Way compares the abundances derived from field stars and clusters, giving information on the abundances and dynamics of gas.

A personal account of the evolution of millimeter-wave astronomy at the US National Radio Astronomy Observatory. The author recounts the behind-the-scenes activities of the staff from the beginnings at Kitt Peak to the closing of the Tuscon offices.

Comets are small bodies, but of great cosmic relevance. I have taken the challenge to write a new book on comets that summarizes most of the recent advances on thesubject, including my own workdeveloped during the last 25 years.

The aim of this book is to serve as a reference work which not only reviews the progress made since the early days of pulsar astronomy, but especially focuses on questions such as: "What have we learned about the subject and how did we learn it?"