Results 311 to 320 of about 820,585 (334)
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Convection in stellar atmospheres
2022This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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Nature, 1971
Stellar Atmospheres . By Dimitri Mihalas. (Series of Books in Astronomy and Astrophysics.) Pp. xiv + 463. (Freeman: San Francisco and Reading, February 1971.) £7.50.
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Stellar Atmospheres . By Dimitri Mihalas. (Series of Books in Astronomy and Astrophysics.) Pp. xiv + 463. (Freeman: San Francisco and Reading, February 1971.) £7.50.
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The stellar atmospheres problem
Journal of Quantitative Spectroscopy and Radiative Transfer, 1971Abstract This paper discusses the construction of model stellar atmospheres placing particular stress on the mathematical methods used. The basic equations and assumptions of the problem are presented. Techniques which reduce the transfer equation to a set of linear equations are developed.
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2002
We give an overview about the state-of-the-art in cool stellar (and sub-stellar) atmosphere simulations. Recent developments in numerical methods and parallel supercomputers, as well as in the quality of input data such as atomic and molecular line lists have led to substantial improvements in the quality of synthetic spectra when compared to multi ...
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We give an overview about the state-of-the-art in cool stellar (and sub-stellar) atmosphere simulations. Recent developments in numerical methods and parallel supercomputers, as well as in the quality of input data such as atomic and molecular line lists have led to substantial improvements in the quality of synthetic spectra when compared to multi ...
E. Baron +5 more
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Motions in Stellar Atmospheres
Publications of the Astronomical Society of the Pacific, 1959It has become increasingly obvious that we should not regard stellar atmospheres as homogeneous and static but must study special effects of forces other than gravity if we are to gain any satisfactorily complete comprehension of the general behavior of these atmospheres.
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Diffusion in stellar atmospheres [PDF]
EAS Publications Series, 2005 A review of some of the most important studies of the past several decades pertaining to the study of atomic diffusion in stellar atmospheres is presented. A brief description of various studies of radiative accelerations and diffusion calculations in stellar atmospheres is given.
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Do Intrinsic Magnetic Fields Protect Planetary Atmospheres from Stellar Winds?
Space Science Reviews, 2021R. Ramstad, S. Barabash
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The Stability of Stellar Atmospheres
Publications of the Astronomical Society of Australia, 1984There have been extensive calculations of model atmospheres of stars over the past few decades. Almost all of these calculations have assumed radiative equilibrium. Except for convection, very little work has been done on the stability of the surface layers of stars at small optical depths.
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2004
In this note, the formalism used to compute a simple stellar atmosphere model is described. The definition of a stellar atmosphere is strongly connected with the radiation field crossing the boundary layers of a star: the atmosphere is composed of those layers where photons interact with matter for the last time before leaving the star.
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In this note, the formalism used to compute a simple stellar atmosphere model is described. The definition of a stellar atmosphere is strongly connected with the radiation field crossing the boundary layers of a star: the atmosphere is composed of those layers where photons interact with matter for the last time before leaving the star.
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Kinematics and Physics of Celestial Bodies, 2010
Helium, which was first discovered on the sun with the help of spectral analysis, plays, together with hydrogen, a principal role in astrophysics. We consider here two fundamental quantities: primordial helium abundance formed during Big Bang nucleosynthesis and the current initial helium abundances in nearby stars. It is shown that stellar atmospheres
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Helium, which was first discovered on the sun with the help of spectral analysis, plays, together with hydrogen, a principal role in astrophysics. We consider here two fundamental quantities: primordial helium abundance formed during Big Bang nucleosynthesis and the current initial helium abundances in nearby stars. It is shown that stellar atmospheres
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