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Author: Billy Lee Quarles Publisher: ISBN: Category : Celestial mechanics Languages : en Pages :
Book Description
Planetary science in various forms has become interwoven into human culture during all of known human history. The need and desire to expand our horizons has brought humans from basic forms of observation to the development of space satellites that have (in)directly observed other worlds. A major feat of this enterprise during the last half century has been the development of numerical tools and theories to determine the orbital stability of multiple objects orbiting a central body. In this dissertation I have examined two special cases of the gravitational N body problem (N = 3,4) along with the development of a stability criterion based upon the method of Lyapunov exponents. This Lyapunov criterion has shown the existence of a resonance plateau and instability islands within the coplanar circular restricted three body problem (CRTBP). Additionally, the Lyapunov criterion has been used in the determination of resonances for the case of large mass ratios in the CRTBP. I have demonstrated that the 2:1 resonance occurs most frequently as a primary resonance and 3:1 as a secondary resonance within the framework of the coplanar CRTBP. My established methods of using the Lyapunov criterion and determination of resonances have been used to address a controversial system Octantis to ascertain possible ranges of stability that would account for the present observations of a Jupiter-mass planet. The determined stability limits of the planet in Octantis has unveiled the evidence supporting the possibility of a retrograde planet existing in the binary star system and demonstrated the desert of stability when considering a traditional prograde planet. Orbital stability is but one part in the bigger question of habitability. To this end, I have addressed the concerns of habitability within the newly discovered circumbinary system Kepler-16 for possible habitable planets and moons. This exploration has considered many di erent orbital, formation, and habitability scenarios for which a habitable world could exist. I have shown that an Earth-mass object could exist as a Trojan or an exomoon within the standard habitable zone. Furthermore, the orbital stability region resumes for planetary orbits superior to 0.95 AU from Kepler-16A which resides in the extended habitable zone. Finally, the habitability of possible Trojan planets and exomoons in HD 23079 has been addressed and I have shown the improbability of an exomoon from taking excursions from the habitable zone as well as a stable orbit for such an object. My future work will better investigate the possibility of habitable moons in HD 23079. This work will aid in broadening the regions to be considered as habitable since such objects would orbit a Jupiter-like planet within the habitable zone. In addition, I plan to develop theoretical tools to investigate the regions of habitability within multi-stellar environments. I plan to use this new framework to further the investigation of circumbinary planets in Kepler-16, Kepler-34, Kepler-35, and Kepler- 38. Data from the Kepler mission will soon be made public and I will search the public data for the existence of habitable objects within these systems.
Author: Billy Lee Quarles Publisher: ISBN: Category : Celestial mechanics Languages : en Pages :
Book Description
Planetary science in various forms has become interwoven into human culture during all of known human history. The need and desire to expand our horizons has brought humans from basic forms of observation to the development of space satellites that have (in)directly observed other worlds. A major feat of this enterprise during the last half century has been the development of numerical tools and theories to determine the orbital stability of multiple objects orbiting a central body. In this dissertation I have examined two special cases of the gravitational N body problem (N = 3,4) along with the development of a stability criterion based upon the method of Lyapunov exponents. This Lyapunov criterion has shown the existence of a resonance plateau and instability islands within the coplanar circular restricted three body problem (CRTBP). Additionally, the Lyapunov criterion has been used in the determination of resonances for the case of large mass ratios in the CRTBP. I have demonstrated that the 2:1 resonance occurs most frequently as a primary resonance and 3:1 as a secondary resonance within the framework of the coplanar CRTBP. My established methods of using the Lyapunov criterion and determination of resonances have been used to address a controversial system Octantis to ascertain possible ranges of stability that would account for the present observations of a Jupiter-mass planet. The determined stability limits of the planet in Octantis has unveiled the evidence supporting the possibility of a retrograde planet existing in the binary star system and demonstrated the desert of stability when considering a traditional prograde planet. Orbital stability is but one part in the bigger question of habitability. To this end, I have addressed the concerns of habitability within the newly discovered circumbinary system Kepler-16 for possible habitable planets and moons. This exploration has considered many di erent orbital, formation, and habitability scenarios for which a habitable world could exist. I have shown that an Earth-mass object could exist as a Trojan or an exomoon within the standard habitable zone. Furthermore, the orbital stability region resumes for planetary orbits superior to 0.95 AU from Kepler-16A which resides in the extended habitable zone. Finally, the habitability of possible Trojan planets and exomoons in HD 23079 has been addressed and I have shown the improbability of an exomoon from taking excursions from the habitable zone as well as a stable orbit for such an object. My future work will better investigate the possibility of habitable moons in HD 23079. This work will aid in broadening the regions to be considered as habitable since such objects would orbit a Jupiter-like planet within the habitable zone. In addition, I plan to develop theoretical tools to investigate the regions of habitability within multi-stellar environments. I plan to use this new framework to further the investigation of circumbinary planets in Kepler-16, Kepler-34, Kepler-35, and Kepler- 38. Data from the Kepler mission will soon be made public and I will search the public data for the existence of habitable objects within these systems.
Author: Marc Ollivier Publisher: Springer Science & Business Media ISBN: 3540757481 Category : Science Languages : en Pages : 351
Book Description
Over the past ten years, the discovery of extrasolar planets has opened a new field of astronomy, and this area of research is rapidly growing, from both the observational and theoretical point of view. The presence of many giant exoplanets in the close vicinity of their star shows that these newly discovered planetary systems are very different from the solar system. New theoretical models are being developed in order to understand their formation scenarios, and new observational methods are being implemented to increase the sensitivity of exoplanet detections. In the present book, the authors address the question of planetary systems from all aspects. Starting from the facts (the detection of more than 300 extraterrestrial planets), they first describe the various methods used for these discoveries and propose a synthetic analysis of their global properties. They then consider the observations of young stars and circumstellar disks and address the case of the solar system as a specific example, different from the newly discovered systems. Then the study of planetary systems and of exoplanets is presented from a more theoretical point of view. The book ends with an outlook to future astronomical projects, and a description of the search for life on exoplanets. This book addresses students and researchers who wish to better understand this newly expanding field of research.
Author: Rudolf Dvorak Publisher: John Wiley & Sons ISBN: 3527621377 Category : Science Languages : en Pages : 305
Book Description
This latest, up-to-date resource for research on extrasolar planets covers formation, dynamics, atmospheres and detection. After a look at the formation of giant planets, the book goes on to discuss the formation and dynamics of planets in resonances, planets in double stars, atmospheres and habitable zones, detection via spectra and transits, and the history and prospects of ESPs as well as satellite projects. Edited by a renowned expert in solar system dynamics with chapters written by the leading experts in the method described -- from the US and Europe -- this is an ideal textbook for graduates, students in astronomy, and astronomers.
Author: Jack J. Lissauer Publisher: Cambridge University Press ISBN: 1107354617 Category : Science Languages : en Pages : 601
Book Description
A quantitative introduction to the Solar System and planetary systems science for advanced undergraduate students, this engaging new textbook explains the wide variety of physical, chemical and geological processes that govern the motions and properties of planets. The authors provide an overview of our current knowledge and discuss some of the unanswered questions at the forefront of research in planetary science and astrobiology today. They combine knowledge of the Solar System and the properties of extrasolar planets with astrophysical observations of ongoing star and planet formation, offering a comprehensive model for understanding the origin of planetary systems. The book concludes with an introduction to the fundamental properties of living organisms and the relationship that life has to its host planet. With more than 200 exercises to help students learn how to apply the concepts covered, this textbook is ideal for a one-semester or two-quarter course for undergraduate students.
Author: Bonnie Steves Publisher: CRC Press ISBN: 1420083457 Category : Science Languages : en Pages : 305
Book Description
Since the discovery of the first exoplanet orbiting a main sequence star in 1995, nearly 500 planets have been detected, with this number expected to increase dramatically as new ground-based planetary searches begin to report their results. Emerging techniques offer the tantalizing possibility of detecting an Earth-mass planet in the habitable zon
Author: Jean-Pierre de Vera Publisher: Springer Science & Business Media ISBN: 9400765460 Category : Science Languages : en Pages : 432
Book Description
Is the Earth the right model and the only universal key to understand habitability, the origin and maintenance of life? Are we able to detect life elsewhere in the universe by the existing techniques and by the upcoming space missions? This book tries to give answers by focusing on environmental properties, which are playing a major role in influencing planetary surfaces or the interior of planets and satellites. The book gives insights into the nature of planets or satellites and their potential to harbor life. Different scientific disciplines are searching for the clues to classify planetary bodies as a habitable object and what kind of instruments and what kind of space exploration missions are necessary to detect life. Results from model calculations, field studies and from laboratory studies in planetary simulation facilities will help to elucidate if some of the planets and satellites in our solar system as well as in extra-solar systems are potentially habitable for life.
Author: Publisher: ISBN: 9782008933290 Category : Extrasolar planets Languages : en Pages : 400
Book Description
Over the past ten years, the discovery of extrasolar planets has opened a new field of astronomy, and this area of research is rapidly growing, from both the observational and theoretical point of view. The presence of many giant exoplanets in the close vicinity of their star shows that these newly discovered planetary systems are very different from the solar system. New theoretical models are being developed in order to understand their formation scenarios, and new observational methods are being implemented to increase the sensitivity of exoplanet detections. In the present book, the authors address the question of planetary systems from all aspects. Starting from the facts (the detection of more than 300 extraterrestrial planets), they first describe the various methods used for these discoveries and propose a synthetic analysis of their global properties. They then consider the observations of young stars and circumstellar disks and address the case of the solar system as a specific example, different from the newly discovered systems. Then the study of planetary systems and of exoplanets is presented from a more theoretical point of view. The book ends with an outlook to future astronomical projects, and a description of the search for life on exoplanets. This book addresses students and researchers who wish to better understand this newly expanding field of research.
Author: Rudolf Dvorak Publisher: Springer ISBN: 9783540814078 Category : Science Languages : en Pages : 281
Book Description
This book is intended as an introduction to the field of planetary systems at the postgraduate level. It consists of four extensive lectures on Hamiltonian dynamics, celestial mechanics, the structure of extrasolar planetary systems and the formation of planets. As such, this volume is particularly suitable for those who need to understand the substantial connections between these different topics.
Author: Pilat-lohinger Elke Publisher: World Scientific ISBN: 9813275146 Category : Science Languages : en Pages : 204
Book Description
Astrophysical research has led to the detection of thousands of planets outside the Solar System. About one-tenth of the extrasolar planets discovered so far reside in binary- or multi-stellar systems, and some of the closest known rocky exoplanets populate these multiple-star systems. While such environments seem good places to look for a second Earth, can Earth-like planets with two or more suns be habitable? And do solar system-like configurations have to be detected to find a habitable exo-Earth?This book addresses these questions. Starting with a brief overview of the various types of double star-planet configurations that have been observed so far, the book discusses the intriguing variety of planetary motion in such environments, taking into account the stellar type, evolution, and activity, and elaborates on how the presence of an additional stellar companion affects planet formation, system architectures and the habitability of planets in binary star systems. New methodologies developed in this area of research are explained and demonstrated for systems such as Alpha-Centauri, HD41004, Kepler-35, and many others. This monograph provides a grand entry to the exciting results that we expect from new missions like TESS, CHEOPS and Plato.
Author: Daniel Benest Publisher: Springer Science & Business Media ISBN: 3540729836 Category : Science Languages : en Pages : 419
Book Description
This set of lectures collects surveys of open problems in celestial dynamics and dynamical astronomy applied to solar, extra-solar and galactic systems. The discovery and thus the possibility to study many new extra-solar planetary systems have spurred new developments in the field and enabled the testing and enlargement of the domains of validity of theoretical predictions through the Nekhoroshev theorem.
Author: Billy Lee Quarles
Author: Billy Lee Quarles
Author: Marc Ollivier
Author: Rudolf Dvorak
Author: Jack J. Lissauer
Author: Bonnie Steves
Author: Jean-Pierre de Vera
Author: 
Author: Rudolf Dvorak
Author: Pilat-lohinger Elke
Author: Daniel Benest