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Searching for the Oldest Stars
A leading astronomer takes readers behind the scenes of the thrilling science of stellar archaeology and explains how sections of the night sky are "excavated" in the hunt for extremely rare, 13-billion-year-old relic stars and how this quest reveals tantalizing new details about the origins and evolution of the cosmos.
Anomaly
In June 2021, the U.S. National Intelligence publicly admitted that UFOs are real physical objects and that they have been penetrating restricted military airspace since at least 2004. Despite this bombshell and further recent admissions by the Pentagon, the identity of these mysterious craft remains unknown. This book brings the full scientific method to bear on this enigmatic issue. Written by Daniel Coumbe, a former research scientist at the Niels Bohr Institute in Copenhagen with a PhD in theoretical particle physics, this book defines one of the first scientifically credible studies of UFOs in the modern era. Anomaly reveals new results derived from radar, optical sensors, and scientific instruments, rather than speculating on unreliable eyewitness testimony. This scientific approach provides the reader with clear and reliable answers, something that is desperately needed in the murky field of UFOs.
The Influence of Binaries on Stellar Population Studies
This book reviews recent observations of non-evolved and evolved binary populations in clusters and the field with special emphasis on statistical biases, incompleteness, and distribution functions. It considers different binary types and presents and discusses recent results in the field.
Principles and Perspectives in Cosmochemistry
A fundamental question in contemporary astrophysics is the origin of the elements. Cosmochemistry seeks to answer when, how and where the chemical elements arose. Quantitative answers to these fundamental questions require a multi-disciplinary approach involving stellar evolution, explosive nucleosynthesis and nuclear reactions in different astrophysical environments. There remain, however, many outstanding problems and cosmochemistry remains a fertile area of research. This book is among the first in recent times to put together the essentials of cosmochemistry, combining contributions from leading astrophysicists in the field. The chapters have been organized to provide a clear description of the fundamentals, an introduction to modern techniques such as computational modelling, and glimpses of outstanding issues.
Asymptotic Giant Branch Stars
The underlying astrophysical mechanisms of the objects known as asymptotic giant branch stars - the structures that occur during the dramatic period prior to a star's death - is the main theme of this text. Over the past three decades, asymptotic giant branch stars have become a topic of their own, and the contributions to this volume all focus on these entities themselves, rather than their connections to other fields of astronomy. Among the many topics covered are new methods of high- quality infrared observation and the more detailed and realistic simulations made possible by increasingly fast computers. This collection should be useful to graduate students who work in the field, teachers who want to address the subject in their courses, and to astronomers from various backgrounds who are interested in the astrophysics of AGB stars.
Isotopic fractionation study towards massive star-forming regions across the Galaxy
One of the most important tools to investigate the chemical history of our Galaxy and our own Solar System is to measure the isotopic fractionation of chemical elements. In the present study new astronomical observations devoted to the study of hydrogen and nitrogen fractionation (D/H and 14N/15N ratios) of molecules, towards massive star-forming regions in different evolutionary phases, have been presented. Moreover, a new detailed theoretical study of carbon fractionation, 12C/13C ratios, has been done. One of the main results was the confirmation that the 14N/15N ratio increases with the galactocentric distance, as predicted by stellar nucleosynthesis Galactic chemical evolution models. This work gives new important inputs on the understanding of local chemical processes that favor the production of molecules with different isotopes in star-forming regions.
Chemical Abundances in the Universe
Session I : Primordial nucleosynthesis and the first stars in the Universe -- Session II : First stars in the Galaxy -- Session III : Chemical abundances in the high red-shift Universe -- Session IV : Chemical abundance constraints on mass assembly and star formation in local galaxies and the Milky Way -- Session V : Extrasolar planets: the chemical abundance connection -- Session VI : Abundance surveys and projects in the era of future large telescopes.
Nuclei in the Cosmos XV
These peer-reviewed NIC XV conference proceedings present the latest major advances in nuclear physics, astrophysics, astronomy, cosmochemistry and neutrino physics, which provide the necessary framework for a microscopic understanding of astrophysical processes. The book also discusses future directions and perspectives in the various fields of nuclear astrophysics research. In addition, it also includes a limited number of section of more general interest on double beta decay and dark matter.
Things That Go Bump in the Universe
"This new book explores the pioneering field of transient - or time-domain - astronomy, the incredible discoveries being made, the tools that we use to detect these cosmic events, and the aspects that continue to puzzle observers and theorists. In an engaging style accessible to the layperson, the astronomer and popular science author gives us an up-to-date overview of the "transient universe," and explains how astronomers came to see the cosmos as a dynamic place, rather than a static one"--
Planetary Nebulae
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