A comprehensive handbook on the tools, methods, and results of stellar taxonomy, this book describes modern methods of spectroscopic and photometric classification, and identifies particular families of stars, progressing from the hottest to the coolest. Within each category a description is given of the normal types and all the peculiar stars. The emphasis throughout is on the phenomenology of classification, rather than the underlying astrophysics.

This book presents a summary of our observational knowledge of the behavior of all chemical elements identified in stars. Whenever possible the behavior is described quantitatively, with the help of equivalent widths in different types of stars (e.g. dwarfs and supergiants), or different ionization stages, for both absorption and emission features. The authors also describe the behavior of isotopes, and there is a separate section on molecules in stars and circumstellar envelopes. This book will be a fundamental reference for observational astronomers and astrophysicists.

The idea of having a meeting came to the Editors when working on several aspects of galactic Be and B e] stars. They found that a general summary of the properties of B e] stars was missing, so that the organiza tion of a first meeting on these objects appeared as very useful. B e] stars have hydrogen line emission and forbidden Fe 11] and 0 I] emission lines in their spectra; they are also characterized by a strong IR excess due to circumstellar dust. Having a large amount of extinction in the UV and the visual they have been less frequently observed than other emission line objects....

The idea of the symposium came during the XVllth General Assembly of the IAU at Montreal. The Working Group on Be stars adopted both the proposal of holding a meeting, and of having it at the Universitats- sternwarte Munich. The meeting was organized under the auspices of IAU Comm. 29 (Stel- lar Spectra) and the sponsorship of Comm. 45 (Stellar Classification). The Scientific Organizing Committee was composed of Mercedes Jaschek (chairman), W. Bonsack, C. de Loore, A. Feinstein, H. G. Groth, P. Harmanec, L. Houziaux, A. M. Hubert-De1p1ace, L. S. Luud, A. Slettebak and A. Underhill. The...

The idea of this Colloquium came during the XVIIth General Assembly of the I. A. U. at Montreal. The meeting was organized under the auspices of I. A. U. Commission 5 (Documentation and Astronomical Data). The Scientific Organizing Committee consisted of C. Jaschek (chairperson), O. Dluzhnevskaya, B. Hauck (vice chairperson), W. Heintz, P. Lantos, Th. Lederle, J. Mead G. Ruben, Y. Terashita, G. Wilkins. The members of this Committee are to be thanked for their devotion to the organization of what turned out to be a very successful meeting. The program was organized so as to cover most of the...

This book presents a summary of our observational knowledge of the behavior of all chemical elements identified in stars. Whenever possible the behavior is described quantitatively, with the help of equivalent widths in different types of stars (e.g. dwarfs and supergiants), or different ionization stages, for both absorption and emission features. The authors also describe the behavior of isotopes, and there is a separate section on molecules in stars and circumstellar envelopes. This book will be a fundamental reference for observational astronomers and astrophysicists.

The idea of this Colloquium came during the XVIIth General Assembly of the I. A. U. at Montreal. The meeting was organized under the auspices of I. A. U. Commission 5 (Documentation and Astronomical Data). The Scientific Organizing Committee consisted of C. Jaschek (chairperson), O. Dluzhnevskaya, B. Hauck (vice chairperson), W. Heintz, P. Lantos, Th. Lederle, J. Mead~ G. Ruben, Y. Terashita, G. Wilkins. The members of this Committee are to be thanked for their devotion to the organization of what turned out to be a very successful meeting. The program was organized so as to cover most of the...

The principal purpose of IAU Colloquium No. 35 was to discuss those aspects of the techniques of the compilation, evaluation, and distribution of data that are common to astrometry, photometry and spectrometry of stars and stellar systems. In the announcement of the Colloquium, it was suggested that there would be special emphasis on the techniques of quality control, and on the standards for the presentation of numerical data in both printed and com puter-readable form. As the meeting progressed it became clear that the lack of a standard, unambiguous system for the identifi cation of...