Results 161 to 170 of about 173,010 (211)

Definition and empirical structure of the range of stellar chromospheres-coronae across the H-R diagram: cool stars.

, 1985
J. L. Linsky
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The energy input mechanism into the lower transition regions between stellar chromospheres and coronae

, 1988
E. Boehm-Vitense
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Evidence for stellar chromospheres presented by ultraviolet observations of the sun and stars

, 1973
L. R. Doherty
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The stellar corona-chromosphere connection

S. Freund, S. Czesla, B. Fuhrmeister, P. Predehl, J. Robrade, P. C. Schneider, J. H. M. M. Schmitt   +6 more
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A phenomenological interpretation of stellar chromospheres

Astrophysics and Space Science, 1986
An attempt is made to develop a phenomenological interpretation of stellar chromospheres. The following problems are examined: observed emission powers of ‘magnesium’ chromospheres on stars based on the ultraviolet doublet, 2800 Mgii, observations; dependence of chromosphere emission on spectral and luminosity classes; stellar chromospheres as an ...
G. A. Gurzadyan
semanticscholar   +3 more sources

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Stellar Model Chromospheres and Spectroscopic Diagnostics

Annual Review of Astronomy and Astrophysics, 2017
The discovery of exoplanets and the desire to understand their atmospheric chemical composition and habitability provides a new rationale for understanding the radiation from X-rays to radio wavelengths emitted by their host stars. Semiempirical models of stellar atmospheres that include accurate treatment of radiative transfer of all important atoms ...
J. Linsky
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Stellar Chromospheres: The Source of UV Emission

Lecture Notes in Physics, 2019
The lower layer of a star’s atmosphere, its photosphere, has a thermal structure that decreases outward controlled by the balance of radiative and convection heat from below and the loss of radiation to space. With increasing height in a stellar atmosphere, magnetic heating processes become important in the energy balance, forcing the temperature to ...
J. Linsky
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PREDICTED ULTRAVIOLET SPECTRA FROM STELLAR CHROMOSPHERES

Journal of Quantitative Spectroscopy and Radiative Transfer, 1968
Abstract Perhaps the most tangible evidence of the existence and structure of postulated stellar chromospheres of otherwise relatively cool stars would be the detection of an intense ultraviolet spectrum. The solar case for which a variety of measurements is available now reveals that the observed spectrum depends in a very complex and not thoroughly
Ludwig Oster, N. P. Patterson
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Stellar Chromospheres, Coronae, and Winds

1986
The three subjects listed in the title of this chapter were originally defined for phenomena that are observed in the Sun. Observations of other stars have now been made at a wide range of wavelengths and have revealed that one or more of these phenomena are present in stars of every class.
J. P. Cassinelli, K. B. MacGregor
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Stellar Chromospheres, Coronae, and Winds (Invited Review)

Astrophysics and Space Science, 1986
Within the last few years there have been important advances in our understanding of the chromospheres, coronae, and winds of late-type stars. This progress has been the result of ultraviolet and X-ray observations obtained from space with the International Ultraviolet Explorer andEinstein satellites. In addition, ground-based astronomy has contributed
T. Simon
semanticscholar   +3 more sources