Results 1 to 10 of about 26,693 (100)
Symposium - International Astronomical Union, 1999 The evolution of massive stars is far from being fully understood, as we outline by pointing to a number of open problems related to massive stars in the Magellanic Clouds. We argue that rotation may be a key ingredient in the physics of massive stars.
Langer, Norbert, Heger, Alexander
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Progress of Theoretical Physics Supplement, 1962 Modern theories on the evolution of stars are extended to the phases of helium burning, carbon burning, and later burnings as far as possible, and the theoretical results are compared wth the Hertzsprung-Russell diagrams of star clusters. The topics discussed include nuclear generation and energy loss by neutrinos, quasi-static equilibrium, envelope ...
Hayashi, Chushiro +2 more
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THE SOLITON STARS EVOLUTION [PDF]
International Journal of Modern Physics D, 1998 The evolution of a soliton star filled with fermions is studied in the framework of general relativity. Such a system could be described by the surface tension σ0, the bag constant B, and the fermion number density ρ. One of the parameters mentioned above could prevail in the system and thus affect the spacetime inside the bubble.
Bednarek, Ilona, Manka, Ryszard
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Evolution of Proto–Neutron Stars [PDF]
The Astrophysical Journal, 1999 We study the thermal and chemical evolution during the Kelvin-Helmholtz phase of the birth of a neutron star, employing neutrino opacities that are consistently calculated with the underlying equation of state (EOS). Expressions for the diffusion coefficients appropriate for general relativistic neutrino transport in the equilibrium diffusion ...
Pons, J. A. +4 more
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Interactive science, 2020 In the article, the authors’ concept is presented, according to which all planets rotate about their axis due to their satellites. The planet and its satellite are interconnected by a shared gravity, which moves along the surface of the planet as the result of the satellite moving in an orbit.
Lev Borisovich Velgas +1 more
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Thermal evolution of compact stars [PDF]
Nuclear Physics A, 1996 41 pages, revised ...
Schaab, Ch. +3 more
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Evolution of ultra-massive stars [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractWe discuss the evolution of ultra-massive stars.
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Chemical evolution of star clusters [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2010 I discuss the chemical evolution of star clusters, with emphasis on old Galactic globular clusters (GCs), in relation to their formation histories. GCs are clearly formed in a complex fashion, under markedly different conditions from any younger clusters presently known. Those special conditions must be linked to the early formation epoch of the Galaxy
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Massive Stars and Galactic Evolution [PDF]
Symposium - International Astronomical Union, 1991 The evolution and nucleosynthesis in massive stars are briefly reviewed, and compared with the information derived from SN1987A in LMC. Most of the theoretical models agree with the measured abundances and they can be used in models of galactic evolution.Models of chemical evolution of galaxies are presented and the role of massive stars in their ...
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EVOLUTION OF NUCLEAR STAR CLUSTERS [PDF]
The Astrophysical Journal, 2009 Two-body relaxation times of nuclear star clusters are short enough that gravitational encounters should substantially affect their structure in 10 Gyr or less. In nuclear star clusters without massive black holes, dynamical evolution is a competition between core collapse, which causes densities to increase, and heat input from the surrounding galaxy,
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