Comparison Between Model Atmospheres And Spectra From Early Type Stars
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Comparison Between Model Atmospheres And Spectra From Early Type Stars
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Author : E. H. AVRETT
language : en
Publisher:
Release Date : 1964
Comparison Between Model Atmospheres And Spectra From Early Type Stars written by E. H. AVRETT and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.
To assist in the interpretation of ultraviolet continuum observations, observational features are presented of a grid of non-grey model atmospheres in strict radiative equilibrium which have effective temperatures in the range 10000K to 20000K and surface gravities 1000 and 10000. For three models, the blended wings of the higher Balmer and Lyman hydrogen lines are added and include in an approximate way further effects of line blanketing in the ultraviolet. Finally, a preliminary calculation is presented of the effect of departures from L.T.E. on the continuous flux. To examine the validity of the models, the predicted continuous flux and predicted line profiles are compared with the corresponding observed quantities for Vega and Sirius. The question of discrepancies between theory and observations in the ultraviolet is considered from the viewpoint of these new calculations, and find generally good agreement with recent observations made by T. Stecher. (Author).
Comparisons Between Model Atmospheres And Observations Of Early Type Stars
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Author : Stephen Eric Strom
language : en
Publisher:
Release Date : 1964
Comparisons Between Model Atmospheres And Observations Of Early Type Stars written by Stephen Eric Strom and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Early stars categories.
The Early Type Stars
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Author : A.B. Underhill
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
The Early Type Stars written by A.B. Underhill and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
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.
Low Resolution Spectra Of Bright A Type Stars Compared With Model Atmosphere Fluxes
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Author : Robert Joseph Panek
language : en
Publisher:
Release Date : 1976
Low Resolution Spectra Of Bright A Type Stars Compared With Model Atmosphere Fluxes written by Robert Joseph Panek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with A stars categories.
The Astrophysics Of Emission Line Stars
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Author : Tomokazu Kogure
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-05-05
The Astrophysics Of Emission Line Stars written by Tomokazu Kogure and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-05-05 with Science categories.
Emission line stars are attractive to many people because of their spectacular phenomena and their amazing varieties and variability. This book offers general information on emission line stars, starting from a brief introduction to stellar astrophysics and then moving to a broad overview of emission line stars including early and late type stars as well as pre-main sequence stars.
Comparison Between Model Atmospheres And Observations Of Early Type Stars
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Author : Stephen Eric Strom
language : en
Publisher:
Release Date : 1964
Comparison Between Model Atmospheres And Observations Of Early Type Stars written by Stephen Eric Strom and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Stars categories.
The Atmospheres Of Early Type Stars
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Author : Ulrich Heber
language : en
Publisher: Springer
Release Date : 1992
The Atmospheres Of Early Type Stars written by Ulrich Heber and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Astronomy categories.
These workshop proceedings aim to provide a broad overview of recent developments in the study of hot stars, both from the observational and the theoretical point of view. Included are first results from the Hubble Space Telescope and ROSAT, the effects of non-radial pulsations, mass loss, magnetic fields, and diffusion, as well as modern theoretical methods to treat radiative transfer and compute model atmospheres. Many new results are described, including the discovery of a B star in the halo of M31. Together the reviews provide a general overview of hot-star spectroscopy suitable for preparing advanced lecture courses and as an introductory text for graduate students.
Model Atmosphere Studies Of The Spectra Of Early Type Stars
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Author : Daniel Joseph Lennon
language : en
Publisher:
Release Date : 1983
Model Atmosphere Studies Of The Spectra Of Early Type Stars written by Daniel Joseph Lennon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Blanketed Model Atmospheres For Early Type Stars
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Author : Robert L. Kurucz
language : en
Publisher:
Release Date : 1974
Blanketed Model Atmospheres For Early Type Stars written by Robert L. Kurucz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Early stars categories.
Spectrum Formation In Stars With Steady State Extended Atmospheres
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Author : International Astronomical Union. Colloquium
language : en
Publisher:
Release Date : 1970
Spectrum Formation In Stars With Steady State Extended Atmospheres written by International Astronomical Union. Colloquium and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Astronomy categories.