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Variation In Exoplanetary Structure And Mineralogy From Observed Stellar Metallicities And Related Geophysical Implications
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Book Synopsis Variation in Exoplanetary Structure and Mineralogy from Observed Stellar Metallicities, and Related Geophysical Implications by : John Carleton Rarick (Graduate student)
Download or read book Variation in Exoplanetary Structure and Mineralogy from Observed Stellar Metallicities, and Related Geophysical Implications written by John Carleton Rarick (Graduate student) and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Variation in Exoplanetary Structure and Mineralogy from Observed Stellar Metallicities, and Related Geophysical Implications by : John Carleton Rarick
Download or read book Variation in Exoplanetary Structure and Mineralogy from Observed Stellar Metallicities, and Related Geophysical Implications written by John Carleton Rarick and published by . This book was released on 2018 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the detection of thousands of exoplanetary candidates, too few of these are known to resemble Earth in terms of volume and composition for many meaningful statistics on Earth-sized exoplanets to be obtained. Therefore, we instead estimate the bulk mineralogy of Earth-sized planet models, using the emission spectra of Sun-like stars. It is possible to convert the results of many stellar spectral observations into major oxides, thus allowing conversion of these oxides to silicate mantle mineralogies, similar to work done by Unterborn et al. (2017), as well as estimate the relative volume of a metallic core for cases where terrestrial worlds are near Earth's size. This approach provides a way to anticipate how such exoplanets may differ from Earth structurally, compositionally, and perhaps in terms of geologic behavior. In order to isolate the effects on an otherwise Earth-analogue planet due only to initial variations in elemental composition, the volume, surface temperature, hydrosphere, and atmosphere are all considered equal to Earth, as differences in these aspects of a planet are not directly linked to the composition of the host star. The goal is to increase understanding of effects due solely to differences in initial bulk chemical composition and provide improved mineralogical and geophysical constraints of planets which may orbit roughly solar-analogue stars.
Book Synopsis Characterizing Stellar and Exoplanetary Environments by : Helmut Lammer
Download or read book Characterizing Stellar and Exoplanetary Environments written by Helmut Lammer and published by Springer. This book was released on 2014-11-03 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book an international group of specialists discusses studies of exoplanets subjected to extreme stellar radiation and plasma conditions. It is shown that such studies will help us to understand how terrestrial planets and their atmospheres, including the early Venus, Earth and Mars, evolved during the host star’s active early phase. The book presents an analysis of findings from Hubble Space Telescope observations of transiting exoplanets, as well as applications of advanced numerical models for characterizing the upper atmosphere structure and stellar environments of exoplanets. The authors also address detections of atoms and molecules in the atmosphere of “hot Jupiters” by NASA’s Spitzer telescope. The observational and theoretical investigations and discoveries presented are both timely and important in the context of the next generation of space telescopes. The book is divided into four main parts, grouping chapters on exoplanet host star radiation and plasma environments, exoplanet upper atmosphere and environment observations, exoplanet and stellar magnetospheres, and exoplanet observation and characterization. The book closes with an outlook on the future of this research field.
Book Synopsis The Effects of Stellar Magnetic Activity and Variability on Observations of Exoplanets by : Brett M. Morris
Download or read book The Effects of Stellar Magnetic Activity and Variability on Observations of Exoplanets written by Brett M. Morris and published by . This book was released on 2019 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The search for life in the Universe outside of the Solar System focuses on the study of potentially habitable exoplanets. Exoplanets have been discovered principally via the transit method, which reveals planetary radii and orbital periods, among other things. In transiting multi-planet systems, we can measure the masses of exoplanets without expensive spectroscopy by using transit timing variations. The orbit of a single transiting planet around a single star would be (nearly) perfectly periodic, but if there's more than one planet in the system, the gravitational influence of each planet on each other changes the orbital shape and orientation. The apparent variation in the exoplanet transit times thus transmits information about the mass and orbit of the perturbing planet. Transits can also reveal the composition of exoplanet atmospheres via transmission spectroscopy. When the planet passes in front of the host star, it will appear largest at wavelengths where the planet's atmosphere is opaque, and smallest at wavelengths where the atmosphere is transparent. Thus by measuring the apparent radius of the planet as a function of wavelength, we can obtain a spectrum of an exoplanet's atmosphere. However, there are additional signals generated by magnetic activity and variability at the stellar surface which inject confounding time- and wavelength-dependent signals into the spectrophotometry of exoplanet host stars which complicate all of the aforementioned measurements. We must understand heterogeneous stellar surfaces in order to accurately answer astrobiological questions such as: does this planet have a surface, and what is the composition of its atmosphere? The goal of this dissertation is to explore stellar magnetic activity and variability and their impacts on measurements of exoplanets with implications for astrobiology. I used the transiting planet HAT-P-11 b to measure the size and latitude distributions of starspots on its active K4 dwarf host star, to find that its magnetic activity mirrors the Sun's. I measured the chromospheric activity of HAT-P-11 and compared it to stars of similar temperature and rotation period to find that it's the most active of its peers, perhaps suggestive of star-planet interaction. I directly measured starspot coverage on a sample of bright stars via TiO molecular band modeling. I identified the possibility of detecting stellar activity cycles of nearby stars using precision astrometry. I devised a technique for measuring robust exoplanet radii even in the presence of significant starspot distributions by reparameterizing the transit light curve of Mandel & Agol (2002). Finally, I devised a simulator for James Webb Space Telescope observations of transiting exoplanets, to explore the limits imposed by stellar magnetic activity on transit timing and transmission spectroscopy measurements for three systems with potentially habitable exoplanets.
Book Synopsis Ultrahigh-pressure Mineralogy by : Russell Julian Hemley
Download or read book Ultrahigh-pressure Mineralogy written by Russell Julian Hemley and published by de Gruyter. This book was released on 1998 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 37 of Reviews in Mineralogy moves from the complexity of rocks to their mineral components and finally to fundamental properties arising directly from the play of electrons and nuclei. This volume was prepared for a short course by the same t
Book Synopsis Saturn in the 21st Century by : Kevin H. Baines
Download or read book Saturn in the 21st Century written by Kevin H. Baines and published by Cambridge University Press. This book was released on 2018-12-06 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed overview of Saturn's formation, evolution and structure written by eminent planetary scientists involved in the Cassini Orbiter mission.
Book Synopsis Earth as an Evolving Planetary System by : Kent C. Condie
Download or read book Earth as an Evolving Planetary System written by Kent C. Condie and published by Academic Press. This book was released on 2011-08-22 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earth as an Evolving Planetary System, Second Edition, explores key topics and questions relating to the evolution of the Earth's crust and mantle over the last four billion years. This updated edition features exciting new information on Earth and planetary evolution and examines how all subsystems in our planet—crust, mantle, core, atmosphere, oceans and life—have worked together and changed over time. It synthesizes data from the fields of oceanography, geophysics, planetology, and geochemistry to address Earth’s evolution. This volume consists of 10 chapters, including two new ones that deal with the Supercontinent Cycle and on Great Events in Earth history. There are also new and updated sections on Earth's thermal history, planetary volcanism, planetary crusts, the onset of plate tectonics, changing composition of the oceans and atmosphere, and paleoclimatic regimes. In addition, the book now includes new tomographic data tracking plume tails into the deep mantle. This book is intended for advanced undergraduate and graduate students in Earth, Atmospheric, and Planetary Sciences, with a basic knowledge of geology, biology, chemistry, and physics. It also may serve as a reference tool for structural geologists and professionals in related disciplines who want to look at the Earth in a broader perspective. Kent Condie's corresponding interactive CD, Plate Tectonics and How the Earth Works, can be purchased from Tasa Graphic Arts here: http://www.tasagraphicarts.com/progptearth.html Two new chapters on the Supercontinent Cycle and on Great Events in Earth history New and updated sections on Earth's thermal history, planetary volcanism, planetary crusts, the onset of plate tectonics, changing composition of the oceans and atmosphere, and paleoclimatic regimes Also new in this Second Edition: the lower mantle and the role of the post-perovskite transition, the role of water in the mantle, new tomographic data tracking plume tails into the deep mantle, Euxinia in Proterozoic oceans, The Hadean, A crustal age gap at 2.4-2.2 Ga, and continental growth
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :030947941X Total Pages :187 pages Book Rating :4.3/5 (94 download)
Book Synopsis Exoplanet Science Strategy by : National Academies of Sciences, Engineering, and Medicine
Download or read book Exoplanet Science Strategy written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-01-17 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past decade has delivered remarkable discoveries in the study of exoplanets. Hand-in-hand with these advances, a theoretical understanding of the myriad of processes that dictate the formation and evolution of planets has matured, spurred on by the avalanche of unexpected discoveries. Appreciation of the factors that make a planet hospitable to life has grown in sophistication, as has understanding of the context for biosignatures, the remotely detectable aspects of a planet's atmosphere or surface that reveal the presence of life. Exoplanet Science Strategy highlights strategic priorities for large, coordinated efforts that will support the scientific goals of the broad exoplanet science community. This report outlines a strategic plan that will answer lingering questions through a combination of large, ambitious community-supported efforts and support for diverse, creative, community-driven investigator research.
Book Synopsis Planets, Stars and Stellar Systems by : Linda M. French
Download or read book Planets, Stars and Stellar Systems written by Linda M. French and published by Springer. This book was released on 2013-02-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is volume 3 of Planets, Stars and Stellar Systems, a six-volume compendium of modern astronomical research covering subjects of key interest to the main fields of contemporary astronomy. This volume on “Solar and Stellar Planetary Systems” edited by Linda French and Paul Kalas presents accessible review chapters From Disks to Planets, Dynamical Evolution of Planetary Systems, The Terrestrial Planets, Gas and Ice Giant Interiors, Atmospheres of Jovian Planets, Planetary Magnetospheres, Planetary Rings, An Overview of the Asteroids and Meteorites, Dusty Planetary Systems and Exoplanet Detection Methods. All chapters of the handbook were written by practicing professionals. They include sufficient background material and references to the current literature to allow readers to learn enough about a specialty within astronomy, astrophysics and cosmology to get started on their own practical research projects. In the spirit of the series Stars and Stellar Systems published by Chicago University Press in the 1960s and 1970s, each chapter of Planets, Stars and Stellar Systems can stand on its own as a fundamental review of its respective sub-discipline, and each volume can be used as a textbook or recommended reference work for advanced undergraduate or postgraduate courses. Advanced students and professional astronomers in their roles as both lecturers and researchers will welcome Planets, Stars and Stellar Systems as a comprehensive and pedagogical reference work on astronomy, astrophysics and cosmology.
Book Synopsis Ultraviolet Astronomy and the Quest for the Origin of Life by : Ana I. Gomez de Castro
Download or read book Ultraviolet Astronomy and the Quest for the Origin of Life written by Ana I. Gomez de Castro and published by Elsevier. This book was released on 2021-03-27 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultraviolet Astronomy and the Quest for the Origin of Life addresses the use of astronomical observations in the ultraviolet range to better understand the generation of complex, life-precursor molecules. The origin of RNA is still under debate but seems to be related to the generation of pools of complex organic molecules submitted to heavy cycles of solution in water and drying. This book investigates whether these cycles require a planetary surface or may occur in space by examining both the theoretical and observational aspects of the role of UV radiation in the origin of life. This book offers the latest advances in these studies for astronomers, astrobiologists and planetary scientists. Addresses both the theoretical and observational aspects of the role of Ultraviolet (UV) radiation in the origin of life Builds on the requirements to produce prebiotic molecules in space and the implications for the origin of RNA Investigates the use of ultraviolet observations related to planetary system formation, the evolution of young planetary disks, and the interaction of stars with planetary atmospheres
Book Synopsis Advances in Lithium Isotope Geochemistry by : Paul Tomascak
Download or read book Advances in Lithium Isotope Geochemistry written by Paul Tomascak and published by Springer. This book was released on 2015-12-01 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work summarizes the historical progression of the field of lithium (Li) isotope studies and provides a comprehensive yet succinct overview of the research applications toward which they have been directed. In synthesizing the historical and current research, the volume also suggests prospective future directions of study. Not even a full decade has passed since the publication of a broadly inclusive summary of Li isotope research around the globe (Tomascak, 2004). In this short time, the use of this isotope system in the investigation of geo- and cosmochemical questions has increased dramatically, due, in part, to the advent of new analytical technology at the end of the last millennium. Lithium, as a light element that forms low-charge, moderate-sized ions, manifests a number of chemical properties that make its stable isotope system useful in a wide array of geo- and cosmochemical research fields.
Book Synopsis Protostars and Planets V by : Bo Reipurth
Download or read book Protostars and Planets V written by Bo Reipurth and published by University of Arizona Press. This book was released on 2007 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Protostars and Planets V' builds on the latest results from recent advances in ground and space-based astronomy and in numerical computing techniques to offer the most detailed and up-to-date picture of star and planet formation - including the formation and early evolution of our own solar system.
Book Synopsis Halogens and Noble Gases, Second Edition by : Monica Halka
Download or read book Halogens and Noble Gases, Second Edition written by Monica Halka and published by Infobase Holdings, Inc. This book was released on 2019-12-01 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of their adjacency in the periodic table, halogens and nonmetals have very different properties. Halogens are among the most chemically reactive elements in the periodic table, exhibiting a diverse chemistry in terms of the large numbers of compounds they can form. On the other hand, noble gases are the least chemically reactive elements. In fact, before the 1960s, chemists referred to these elements as inert gases, because it was believed that they exhibited no chemistry whatsoever. Providing the basics of these elements, including their role in history and some of the important scientists involved in their discovery, this newly updated, full-color resource features up-to-date scientific understanding in a clear and accessible format. Halogens and Noble Gases, Second Edition examines the ways humans use halogens and noble gases and the resulting benefits and challenges to society, health, and the environment. Fluorine, chlorine, bromine, iodine, helium, and krypton are covered in this eBook, along with the fundamentals of chemistry and physics as well as possible future developments in halogen and noble gas science and its applications.
Book Synopsis Of Distant Worlds by : The Publishing Room
Download or read book Of Distant Worlds written by The Publishing Room and published by Independently Published. This book was released on 2021-03-25 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: At The Publishing Room, we believe in new and emerging writers. Because of this, we decided to hold a Fantasy Short Story Contest and select the ten best stories. We have compiled these stories into one brilliant anthology that will keep you wanting more. If you are a fan of Game of Thrones, Harry Potter or Westworld, you will love this book!
Download or read book Astrobiology written by Gerda Horneck and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book bridges a gap in the literature by bringing together leading specialists from different backgrounds. It addresses the specific need for a readable book on this very interdisciplinary and new topic at research level.
Book Synopsis Planetary Systems and the Origins of Life by : Ralph Pudritz
Download or read book Planetary Systems and the Origins of Life written by Ralph Pudritz and published by Cambridge University Press. This book was released on 2013-01-17 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several major breakthroughs have helped contribute to the emerging field of astrobiology. Focusing on these developments, this fascinating book explores some of the most important problems in this field. It examines how planetary systems formed, and how water and the biomolecules necessary for life were produced. It then focuses on how life may have originated and evolved on Earth. Building on these two themes, the final section takes the reader on a search for life elsewhere in the Solar System. It presents the latest results of missions to Mars and Titan, and explores the possibilities of life in the ice-covered ocean of Europa. This interdisciplinary book is an enjoyable overview of this exciting field for students and researchers in astrophysics, planetary science, geosciences, biochemistry, and evolutionary biology. Colour versions of some of the figures are available at www.cambridge.org/9780521875486.
Download or read book Titan written by Ingo Müller-Wodarg and published by Cambridge University Press. This book was released on 2014-02-24 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference and guide examines the processes that shape the atmosphere and surface of Titan, Saturn's largest moon.
