The Origin of StarsWorld Scientific, 2004 - 248 pagine Whre do stars come from and how do they form? These are profound questions which link the nature of our Universe to the roots of mankind. Yet, until a recent revolution in understanding, the proposed answers have been raw speculation. Now, accompanying penetrating observations, a new picture has come into prominence. This book presents the latest astounding observations and scientific ideas covering star formation, star birth and early development. It encompasses all aspects, from the dramatic stories of individual objects, to the collective influence of entire stellar systems. The very first stars to come into existence and the nurturing of planets are discussed to provide the reader with a comprehensive overview. Presenting background information with only the essential mathematics, this book will appeal to scientists wishing to expand their horizons, students seeking solid foundations, and general readers with enquiring minds. |
Sommario
Introduction | 1 |
The Clouds | 32 |
The Internal Dynamics and Structure of Clouds | 44 |
6 | 51 |
4 | 66 |
Turbulence | 72 |
The Collapse | 97 |
The Magnetic Mediation | 101 |
6 | 155 |
1 | 162 |
8 | 179 |
4 | 191 |
8 | 198 |
The Distributions | 219 |
Cosmological Star Formation | 221 |
Epilogue | 237 |
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accretion disk Alfvén speed Alfvén waves ambipolar diffusion angular momentum atomic binary bipolar outflows blackbody bow shocks brown dwarfs circumstellar Class I protostars classical clumps collapse collimation components CTTSS dense density detect distribution dust dynamical emission lines envelope evolution evolve field lines flow flux fraction fragmentation Galactic galaxies high-mass HII regions hydrogen infall infrared instability interactions interstellar interstellar medium ionisation Jeans mass low-mass stars luminosity magnetic field main sequence mass stars massive stars material Mo yr-1 molecular clouds molecules motions near-infrared Nebula objects observed optical orbit Orion parsecs photons photosphere planets predicted pressure produce protostar radiation radius range redshift rotation scale scenario shock waves simulations solar sources spectral spin star formation starbursts starless cores stars form stellar structure supernova supersonic surface Tauri stars temperature theory thermal timescale trigger turbulence typical velocity wavelengths wind young clusters young stars