Abundances in 8 QSO Absorption Line Systems PDF Download
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Author: James Thomas Lauroesch
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 300
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Book Description
Author: James Thomas Lauroesch
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 300
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Book Description
Author: Sueli M. Viegas
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 200
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Book Description
Author: Georges Meylan
Publisher: Springer Science & Business Media
ISBN: 3540494588
Category : Science
Languages : en
Pages : 481
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Book Description
The controversial question of whether the majority of the narrow absorption lines observed in QSO spectra represent cosmological intervening systems or ejecta from the QSO themselves is settled. QSO absorption line spectroscopy, initially a mere technique, has matured into an essential extragalactic research tool for understanding the content of the Universe at redshifts between 0 and 4, and beyond. The only previous important meeting devoted to "QSO Absorption Lines" was held in May 1987 at the Space Telescope Science Institute in Baltimore, Maryland, U.S.A. Since that time, nearly a decade ago, research has been ex tremely active in this now well-established field of astrophysics. Theoretical stud ies and simulations have taken advantage of the constant progress in computer technology, and during these last few years, the observational results have bene fited largely from the new facillities offered by the Hubble Space Telescope in the UV wavelength range and the Keck Telescope for high-resolution spectroscopy.
Author: J. Chris Blades
Publisher: Cambridge University Press
ISBN: 9780521345613
Category : Science
Languages : en
Pages : 362
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Book Description
This second title in the series published for the Space Telescope Science Institute researches the current models of quasar absorption and the systems of absorption lines in the spectra of quasars. Experts in this field discuss the nature of the absorbing process in the vicinity of quasars, the "Lyman-alpha forest", metal-line systems, and quasars as probes of high redshift galaxies. The Hubble Space Telescope will be a valuable tool for learning more about the physics and astronomy of quasars.
Author: Patrick Petitjean
Publisher: Atlantica Séguier Frontières
ISBN: 9782863322291
Category : Absorption spectra
Languages : en
Pages : 490
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Book Description
Author: Daniel E. Venden Berk
Publisher:
ISBN:
Category : Quasars
Languages : en
Pages : 306
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Book Description
Author: D. Kunth
Publisher: Atlantica Séguier Frontières
ISBN: 9782863321942
Category : Cosmology
Languages : en
Pages : 668
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Book Description
Author: Jeremy Walsh
Publisher: Springer Science & Business Media
ISBN: 3540483608
Category : Science
Languages : en
Pages : 329
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Book Description
Author: R. von Steiger
Publisher: Springer Science & Business Media
ISBN: 0387741836
Category : Science
Languages : en
Pages : 512
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Book Description
This volume consists of papers developed from a joint ACE/ISSI symposium at the occasion of the eightieth birthday of Johannes Geiss. The symposium explored insights into the composition of solar-system and galactic matter that have been brought about by recent space missions, ground-based studies, and theoretical advances. Coverage includes linking primordial to solar composition, planetary samples, solar sources and fractionation processes, and interstellar gas and Cosmic rays.
Author: F.D. Kahn
Publisher: Springer Science & Business Media
ISBN: 9400985347
Category : Science
Languages : en
Pages : 468
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Book Description
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.
