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2022
Planetary Systems Now offers a broad, interdisciplinary perspective and introduction to the latest results from leading experts in each field. It offers an unusually wide range of research on topics both inside and outside of the solar system, as well as the most recent results from ongoing ground- and space-based investigations. Experts in their field
Lara, Luisa María, Jewitt David
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Planetary Systems Now offers a broad, interdisciplinary perspective and introduction to the latest results from leading experts in each field. It offers an unusually wide range of research on topics both inside and outside of the solar system, as well as the most recent results from ongoing ground- and space-based investigations. Experts in their field
Lara, Luisa María, Jewitt David
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Planetary nebulae in planetary and binary systems
Astrophysics and Space Science, 1981The problem of the survival of a low-mass secondary orbiting a primary that becomes a planetary nebula is studied. The values of the mass of the primary are 1.0, 1.5, and 2.0M ⊙; the values of the mass of the secondary 0.001M ⊙, 0.01M ⊙ and 0.1M ⊡.
Kyu H. Choi, Samuel C. Vila
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On the Spacing of Planetary Systems
Physical Review Letters, 2000We present a simplified model of planetary accretion based on conservation of mass, conservation of momentum, and angular-momentum-deficit stability. Within the limitations of this model, we show how the organization of generic planetary systems may be derived from the knowledge of their initial mass distribution.
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An old disk still capable of forming a planetary system
Nature, 2013From the masses of the planets orbiting the Sun, and the abundance of elements relative to hydrogen, it is estimated that when the Solar System formed, the circumstellar disk must have had a minimum mass of around 0.01 solar masses within about 100 ...
E. Bergin +13 more
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The formation of the planetary system
Celestial Mechanics, 1984One of the most challenging problems of natural science is the question of how our solar system was formed some 4,6 billion years ago. The main difficulties encountered in trying to find any definite answer to this problem are twofold. In the first place we cannot design direct experiments which could give us clues to the relative importance of the ...
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A Planetary Park system for Mars
Space Policy, 2004The increasing robotic exploration of Mars and eventual human exploration and settlement of that planet threatens to have a significant environmental impact on scientifically important sites and sites of natural beauty in the form of contamination with micro-organisms and spacecraft parts.
Horneck, G., Cockell, C.
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Resonances in Multiple Planetary Systems
Celestial Mechanics and Dynamical Astronomy, 2004The authors investigate the dynamical stability of real extra-solar two-planet planetary systems HD 74156, HD 38529, HD 168443 and HD 169830. The reasons to choose these planets are: (a) they were not analyzed from the dynamical point of view before; (b) the two discovered planets of each system are far away from mean motion resonance; (c) the regions ...
Bálint Érdi +4 more
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Fluids in Planetary Systems [PDF]
Elements, 2005 Water and other geofluids play an important role in the geochemical and rheological evolution of the Earth and other bodies in the solar system. These fluids are responsible for the formation of hydrothermal mineral deposits, affect eruption behavior in volcanic systems and the geophysical properties of the mantle, and significantly affect the way in ...
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The cosmochemistry of planetary systems
Nature Reviews ChemistryPlanets form and obtain their compositions from the leftover material present in protoplanetary disks of dust and gas surrounding young stars. The chemical make-up of a disk influences every aspect of planetary composition, including their overall chemical properties, volatile content, atmospheric composition and potential for habitability. This Review
Martin Bizzarro +2 more
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Planetary Systems and Extraterrestrial Life
Origins of Life, 1974The paper reviews the present status of the problem of the existence of other planetary systems in the Galaxy. Observational data and theoretical results are presented to show that the occurrence of planetary systems is, most probably, not a universal phenomenon. Study of the stability of planetary orbits in the vicinity of double stars indicates that,
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