Results 1 to 10 of about 820,585 (334)
On the Radiative Equilibrium of a Stellar Atmosphere. VIII.
The Astrophysical Journal, 1945 In this paper the methods developed in earlier papers are extended to solving the problem of radiative transfer in curved atmospheres, i.e., to solving the equation of transfer μ∂l/∂r+(1-μ 2 )/r 2 ∂l/∂μ=-κρI+½κρ∫ +1 -1 Idμ, where κρ is a function only of r.
S. Chandrasekhar
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Pressure in Stellar Atmospheres [PDF]
Nature, 1911 WITHIN the last fifteen years the spectroscopic equipment applied to the study of both laboratory and celestial investigation has been very materially modified both in dispersive power and design. In the early nineties there were very few of the 21.5-feet Rowland concave grating spectrographs in regular commission for terrestrial research, and it is ...
C. P. Butler
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On the Radiative Equilibrium of a Stellar Atmosphere. XIX.
The Astrophysical Journal, 1947 In this paper we tabulate the various H-functions which occur in the solutions of transfer problems involving Rayleigh's phase function and Rayleigh scattering (including the state of polarization of the scattered radiation). The H-functions have been determined numerically as the solutions of the exact functional equations which they satisfy.
S. Chandrasekhar, Frances H. Breen
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Abundance of Helium in Stellar Atmospheres [PDF]
Highlights of Astronomy, 1971 Helium abundance in stellar atmospheres has been the subject of several recent investigations, essentially induced by progresses in the computation of non-grey model atmospheres (including line blanketing in the far U.V.), by considerable advances in the theory of Stark broadening of helium lines, by non local thermodynamic equilibrium (LTE) work for ...
R. Cayrel
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The Opacity of Extended Stellar Atmospheres [PDF]
Proceedings of the National Academy of Sciences, 1940 Otto Struve
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Microlensing and the Physics of Stellar Atmospheres
, 2000 8 pages including 6 figures. To appear in ``Microlensing 2000: A New Era of Microlensing Astrophysics,'' an ASP conference proceedings, eds. J.W.
Penny D. Sackett
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Stellar coronal mass ejections [PDF]
Serbian Astronomical Journal, 2022 Stellar coronal mass ejections (CMEs) are a growing research field, especially during the past decade. The large number of so far detected exoplanets raises the open question for the CME activity of stars, as CMEs may strongly affect ...
Leitzinger M., Odert P.
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Quantifying the Key Factors Affecting the Escape of Planetary Atmospheres
The Astrophysical Journal, 2023 The habitability of Earth-like planets is an increasingly important subject in astrophysics and in planetary sciences. Atmospheric escape plays a vital role in the evolution of the habitability of Earth-like planets.
J. Luo, H.-Q. He, G.-S. Tong, Jiao Li
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Non-Thermal Nitric Oxide Formation in the Earth’s Polar Atmosphere
Atmosphere, 2023 Auroral events are the prominent manifestation of solar/stellar forcing on planetary atmospheres because they are closely related to the stellar energy deposition by and evolution of planetary atmospheres.
Valery Shematovich +2 more
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Nonthermal Motions and Atmospheric Heating of Cool Stars
The Astrophysical Journal, 2023 The magnetic processes associated with the nonthermal broadening of optically thin emission lines appear to carry enough energy to heat the corona and accelerate the solar wind.
S. Boro Saikia +8 more
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