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Author: Vitautas Straĭzhis
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 590
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Book Description
Author: Vitautas Straĭzhis
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 590
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Book Description
Author: C. J. Butler
Publisher: Cambridge University Press
ISBN: 9780521418669
Category : Science
Languages : en
Pages : 398
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Book Description
Stellar photometry from space, automatic photometric telescopes, and CCD photometers, these are just some of the exciting areas of current interest and future developments in stellar photometry covered in this timely review. Articles from international experts - drawn together at the IAU Colloquium 136, in Dublin, 1992 - are gathered here to cover all aspects of this fundamental technique. In this survey, professionals discuss state-of-the-art and future technology including photometry with millimagnitude accuracy, multichannel arrays used in the optical and IR, a global network of automatic photometric telescopes, time-series photometry of faint sources using CCDs, and photometry from space. These articles provide an up-to-date account of all aspects of photometry and a guide to future developments - an essential survey for professionals involved in the design and use of such instruments.
Author: CH. Fehrenbach
Publisher: Springer Science & Business Media
ISBN: 9401026270
Category : Science
Languages : en
Pages : 318
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Book Description
Dr J. Landi Dessy, Director of the Astronomical Observatory, Cordoba, Argentina, invited the International Astronomical Union to hold a Symposium in Cordoba in connection with the celebration of the Centennial of the Cordoba Observatory; the date of foundation is October 24, 1871. He proposed that the Symposium should deal with Spectral Classification and Multicolour Photometry as seven years had elapsed since the Symposium No. 24 in Saltsj6baden, and much development had occurred in the field. The invitation and the proposal were accepted by the IAU, and the Symposium was held in Villa Carlos Paz, near Cordoba, between October 18 and October 24, 1971. It was attended by about 50 scientists representing Argentina, Canada, Chile, Den mark, France, Germany, Italy, Mexico, Sweden, Switzerland, U.K., U.S.A., Vatican City State and Venezuela. The Symposium was divided into four sessions: 1. Classification of slit spectra, 2. Classification of objective-prism spectra, 3. Photometric classification, 4. Catalogues and documentation. It was decided not to include problems of calibration of absolute magnitudes and temperatures of stars but to refer this to a separate symposium. The contents of the present volume follow closely the programmes of the individual sessions of the Symposium. All the participants at the Symposium appreciated the excellent hospitality of their Argentinian hosts and the efficient help given by the staff ofthe Cordoba Observatory.
Author: Paul B. Davenport
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 13
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Author: A. G. Davis Philip
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 544
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Author: M. Golay
Publisher: Springer Science & Business Media
ISBN: 9401021694
Category : Science
Languages : en
Pages : 376
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Book Description
The material given in this 'Introduction to astronomical photometry' is the subject matter of a lecture at the University of Geneva. It is, therefore, intended for those students, physicists or mathematicians, who have completed their bachelor's degree or diploma, and are intending to work for their Ph.D. in astronomy. We assume then the elementary ideas of astrophysics, magnitude, colour index, spectral classes, luminosity classes, gradient, atmospheric extinction are already known. The student may find it useful to re-read the work of Schatzman [1], Dufay [2] and Aller [254] before embarking upon the study of this 'Introduction to astronomical photometry'. It is not our aim in this book to deal with every aspect of stellar photometry. On the contrary, we shall restriet ourselves to looking at subjects ofwhich knowledge seems to us essential for someone who has to use photometrie quantities in his astronomical research. We are, therefore, keeping the interests of the photometrie measurements user partieularly in mind. We shall only discuss very superficially the technical prob lems and reduction methods for atmospheric extinction. These problems are dealt with very clearly in Astronomical Techniques [3]; the first by A. Lallemand, H. L.
Author: A. G. Davis Philip
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 538
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Author: David Belden Wood
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 478
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Author: Harold L. Johnson
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Multicolor photometric observations, were made over the range of wavelength from 0.35 microns in the ultraviolet to nearly 10 microns in the infrared, were made on thirty-nine carbon stars and six late-type long period variable stars. The bolometric corrections and effective temperatures of these stars were computed and used to construct the absolute bolometric-magnitude---effectivetemperature diagram for carbon stars. The effective temperatures of the carbon stars range from 5500 degrees K downward to 2270K. The bolometric corrections range from almost zero to nearly 5 mag. The apparent angular diameters of some of the carbon stars are as large as 0.01 inches---large enough to be measurable by a Michelson interferometer with a 50-foot beam. (Author).
Author:
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 874
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Book Description
