Advances in Astronomy and Astrophysics - 1st Edition - ISBN: 9781483199214, 9781483224244

Advances in Astronomy and Astrophysics, Volume 3

1st Edition

Editors: Zdeněk Kopal
eBook ISBN: 9781483224244
Imprint: Academic Press
Published Date: 1st January 1965
Page Count: 402
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Table of Contents


Contributors to Volume 3


Contents of Volume 1 and 2


The Abundance of Elements in the Solar Atmosphere


I. Introduction


II. Theory


III. Factors Influencing the Determination of Elemental Abundances in the Solar Atmosphere


IV. The Role of Transition Probabilities in Abundance Determination


V.Solar Abundances of Particular Elements


References


Determination of the Elements of Eclipsing Variables from Fourier Transforms of Their Light Curves


I. Introduction


II. Incomplete Fourier Transforms of the Light Curve


III. Characteristic Functions of the Eclipse


IV. Relations between Occultation and Transit for Functions E and Fn


V. Determination of Limb-Darkening Coefficients of the Components


VI. Practical Method of Solution


VII. Incomplete Fourier Transforms Sn and Cn Evaluated Numerically by the Trapezoidal Rule from the Observed Light Variation


VIII. Method of Differential Corrections for Improving Values of the Elements


IX. Examples of Practical Analysis


References


Internal Structure of the Stars and Apsidal Motions


I. Introduction


II. Apsidal Motion in Close Binary Systems


III. Apsidal Motion: Observable Consequences


IV. Apsidal Motions: Observations


V. Comparison with the Theory


VI. Remarks


List of Symbols


References


Spectral Analysis of Solar Flares


I. Basic Formulas


II. Review of the Methods Applied


III. Critical Summary of the Present Results


IV. Evidences of Stark Broadening of Balmer Lines in Flares


V. Electron Density


VI. Optical Thickness


VII. Electron Temperature and Deviations from Thermody


Description

Advances in Astronomy and Astrophysics, Volume 3 is a collection of papers that describes the elements found in the solar atmosphere, Fourier transforms, internal structure of the stars, and apsidal motions. Two papers discuss the spectral analysis of solar flares and a survey of modern cosmology. One paper discusses the solar abundance of particular elements such as iron, sodium, potassium, zinc, gallium, strontium. The loss of heavier elements from the upper layers of the solar atmosphere depends on the atomic number: the heavier the atom the greater the amount of depletion. Another paper describes a method to determine the elements of an eclipsing binary system by defining the characteristic functions of the eclipse derived from some integral transforms of the ascending and descending parts in minima of the light curve. One paper compares the general physical theory of self-gravitating gas spheres and of thermonuclear processes with certain phenomena present in close binary systems. One paper notes that the estimates of electron density made by various methods at different flares (solar) and the resulting optical thickness of flares yield values within a wide range. The differences observed in optical thickness are due to various presuppositions on the broadening mechanism of the Balmer lines. The collection is suitable for astronomers, geochemists, astro-physicists, and scientists whose works involve cosmology.


Details

No. of pages:
402
Language:
English
Copyright:
© Academic Press 1965
Published:
Imprint:
Academic Press
eBook ISBN:
9781483224244

Ratings and Reviews


About the Editors

Zdeněk Kopal Editor