A Study of the Double Cluster in Perseus PDF Download
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Author: Pieter Theodorus Oosterhoff
Publisher:
ISBN:
Category : Stars
Languages : en
Pages : 472
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Book Description
Author: Pieter Theodorus Oosterhoff
Publisher:
ISBN:
Category : Stars
Languages : en
Pages : 472
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Book Description
Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 56
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Author: University of Virginia
Publisher:
ISBN:
Category :
Languages : en
Pages : 366
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Book Description
Author: A.B. Underhill
Publisher: Springer Science & Business Media
ISBN: 9401035563
Category : Science
Languages : en
Pages : 295
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Book Description
At this time when astronomers are being surprised by the discovery of objects which emit a fabulously large amount of energy, that is the quasi-stellar radio sources and the quasi-stellar galaxies, and when by the means of space vehicles X rays, gamma rays and cosmic rays are being observed to come from the depths of interstellar space, one may ask why write a book about stars. Stars seem to be almost incidental when one looks at the universe in terms of exceedingly great energies. Nevertheless, stars exist. They are accessible to study and they have not yet revealed all their secrets. This is enough to arouse interest and to cause one to try to find answers to the questions which arise. The early type stars are particularly interesting because they are spendthrift stars pouring out their energy at a great rate. But their brilliance is also their undoing. They must evolve rather quickly, on an astrophysical scale. Thus by studying these stars we are studying a population in change. The implications from the local and from the cosmological viewpoint are important if one wishes to understand the details of stellar evolution and of galactic structure. Perhaps one of the simplest reasons for writing a book about the early type stars is to see if some of the conundrums pre sented by the spectra of these stars can be unravelled when all the available infor mation is brought together.
Author: Charles Edward Saint John
Publisher:
ISBN:
Category :
Languages : en
Pages : 478
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Book Description
Author: Jerzy Neyman
Publisher: Univ of California Press
ISBN: 0520350693
Category : Science
Languages : en
Pages : 264
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Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 1256
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Author: Herbert Alonzo Howe
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 352
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Author: National Research Council (U.S.). Research Information Service
Publisher:
ISBN:
Category : Endowment of research
Languages : en
Pages : 552
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Author: B. Hauck
Publisher: Springer Science & Business Media
ISBN: 9401026459
Category : Science
Languages : en
Pages : 301
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Book Description
In connection with arranging IAU Symposium No. 50 on 'Spectral Classification and Multicolour Photometry', sponsored by Commissions 45 and 25, it was decided to exclude all calibration problems. Instead it was agreed that we should attempt to arrange a separate symposium, dealing with the fundamental problems of the cali bration of absolute magnitudes and temperatures of stars. The Executive Committee of the IAU accepted our proposal, and IAU Symposium No. 54 was held in Geneva on September 12-15, 1972, sponsored by thefollowing IAU Commissions: 24, 25, 29, 33, 35, 37,44 and 45. It was attended by about 90 scientists representing 16 countries. The Symposium was divided into eight sessions. Each session started with a review paper by an invited speaker; this was followed by a general discussion including a few contributed papers. The contents of the present volume follow closely the programmes of the individual sessions of the Symposium. Most of the recorded discussions have been kept, and only in a few cases have the order of questions and comments been altered so as to obtain more homogeneity in the presentation.
