On The Origin Of Planets: By Means Of Natural Simple ProcessesWorld Scientific, 23 de set. de 2010 - 500 páginas The book begins with a historical review of four major theories for the origin of the Solar System in particular, or of planets in general, which highlight the major problems that need to be solved by any plausible theory. In many theories, including that which form the major theme of this book, the formation of planets and stars is intimately linked, so four chapters are devoted to the processes that can be described as the birth, life and death of stars.Recent observations that have revealed the existence of planets around many Sun-like stars are described in detail, followed by a clear exposition of the Capture Theory for the origin of planets. Many aspects of this theory are illustrated with sophisticated computer modelling that convincingly demonstrates the plausibility of the theory. The Capture Theory is in complete accord with all observations, including the estimate it gives for the proportion of Sun-like stars with planets. It is the only theory that sits comfortably with all present observational and theoretical constraints.The general theory of planet formation does not explain the detailed structure of the Solar System. An early postulated collision of two major planets is shown to explain many disparate features of the Solar System — the nature of the terrestrial planets, surface features of the Moon and its relationship with Earth, asteroids, comets and dwarf planets, the relationship between Neptune, Triton and Pluto and the characteristics of meteorites, including the isotopic anomalies found in them. The postulate of a planetary collision is given support by a 2009 NASA observation of the residue of such an event around a distant young star./a |
Conteúdo
1 Observations of Stars | 1 |
2 Producing Protostars Embryonic Stars | 19 |
3 The Life and Death of a Star | 39 |
4 The Evolution of a Galactic Cluster | 55 |
5 Exoplanets Planets Around Other Stars | 65 |
The Capture Theory | 85 |
7 Orbital Evolution | 95 |
8 The Frequency of Planetary Systems | 119 |
FreeFall Collapse | 345 |
Fragmentation and Binary Characteristics | 348 |
Spin Slowing Due to a Stellar wind | 351 |
The Virial Theorem and KelvinHelmholtz Contraction | 353 |
The Lifetime of Stars on the Main Sequence | 356 |
The Eddington Accretion Mechanism | 358 |
The Mass and Orbit of an Exoplanet | 360 |
Radiation Pressure and the PoyntingRobertson Effect | 361 |
9 Satellite Formation | 131 |
10 Features of the Solar System | 151 |
11 Interactions Between Planets | 185 |
12 The Moon | 203 |
13 Mars and Mercury | 219 |
14 Neptune Triton and Pluto | 235 |
15 Dwarf Planets Asteroids Comets and the Kuiper Belt | 241 |
Their Physical and Chemical Properties | 255 |
17 Isotopic Anomalies in Meteorites | 269 |
18 Overview and Conclusions | 295 |
Angular Momentum | 313 |
Equipotential Surfaces of a Tidally Distorted Star | 316 |
The Instability of a Gaseous Filament | 318 |
The Jeans Critical Mass | 320 |
The LyndenBell and Pringle Mechanism | 322 |
Grains in Molecular Clouds | 324 |
The Structure of a Spiral Galaxy | 328 |
The Centre of Mass and the Orbits of Binary Stars | 330 |
The Doppler Effect | 333 |
Atomic Energy Levels and Stellar Spectra | 335 |
Stellar Masses from Observations of Binary Systems | 338 |
SmoothedParticle Hydrodynamics | 341 |
Active Stars and Their Effect on a Stellar Disk | 364 |
The Structure and Decay of a Stellar Disk | 369 |
The Formation of Exoplanets | 372 |
Disrupting a Planetary System | 376 |
From Dust to Satellitesimals | 383 |
From Satellitesimals to Satellites | 387 |
The Tidal Heating of Io | 391 |
The Trojan Asteroids | 395 |
Orbital Precession | 399 |
The Temperature Generated by Colliding Planets | 401 |
Heating by DeuteriumBased Reactions | 414 |
The Thermal Evolution of the Moon | 416 |
The Abrasion of a Hemisphere of the Moon | 420 |
The Roundingoff of a Highly Eccentric Satellite Orbit | 422 |
Continental Drift on Mars | 426 |
The Oort Cloud and Perturbing Stars | 429 |
Planetary Perturbation of New Comets | 433 |
Reactions and Decays | 435 |
Cooling and Grain Formation | 440 |
445 | |
Termos e frases comuns
angular momentum Appendix asteroids astronomical atoms Bellona binary systems body capture-theory centre of mass chondrites chondrules cloud collapse colliding planets collision interface comets condensations cooling core decay detected deuterium diameter disk distance dust particle dwarf planets Earth eccentricity effect electrons embedded cluster estimated exoplanets force gives grains gravitational helium hydrogen increase initial interaction iron isotopes Jeans critical mass Jupiter Kuiper Belt main sequence main-sequence major planets Mars massive material mean plane medium Mercury meteorites Moon motion moving nebula Neptune neutron nuclear reactions number density observed Oort cloud orbital period original perturbation planetary collision planetary orbit planetary systems planetesimals Pluto produced proportion protons protoplanet protostar radiation radius range ratio region satellites satellitesimals semi-major axis shown in Fig shows silicate silicon simulation solar mass Solar System speed spin axis star stellar surface temperature terrestrial planets theory tidal Triton Uranus velocity