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Millimeter Submillimeter Wavelength Spectroscopy Of Prebiotic Interstellar Molecules With Complex Internal Motion
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Book Synopsis Millimeter/submillimeter Wavelength Spectroscopy of Prebiotic Interstellar Molecules with Complex Internal Motion by : Connor Jorden Wright
Download or read book Millimeter/submillimeter Wavelength Spectroscopy of Prebiotic Interstellar Molecules with Complex Internal Motion written by Connor Jorden Wright and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry of the Interstellar Medium (ISM) is now known to be rich, highly complex, and highly heterogeneous. The identification of over 240 molecular species to date, several of them prebiotic in nature, has been driven entirely by first detecting and characterizing their spectra in the laboratory. Due to the structure specific nature of rotational spectroscopy, the bulk of said identifications have come from spectral line identifications with radio telescopes at microwave, millimeter, and submillimeter wavelengths. The laboratory assignment of rotational transitions can, however, become complicated by certain structural components of the molecules under investigation. Transition splittings caused by internal rotation, nuclear spin, or unpaired electron spin can make identification of molecules possessing these features difficult, especially in telescope data with overlapping molecular signals. Therefore, the spectra of three molecules with these complex internal motions (two of which are potential precursors to amino acids or other biologically relevant molecules in the ISM) have been investigated in the millimeter/submillimeter regime: pyruvic acid (CH3COCOOH), the argon-methanol van der Waals cluster (Ar-CH3OH), and the aminomethyl radical (CH2NH2). Collection, assignment, and fits of their rotational spectra allow for future astronomical searches and identification. The results of the laboratory investigations and some preliminary searches in interstellar spectra are presented herein.
Book Synopsis Submillimeter Laboratory Investigations by : Eric Herbst
Download or read book Submillimeter Laboratory Investigations written by Eric Herbst and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Our group was the first to extend studies of the rotational spectra of small and fundamental gas-phase molecules from the microwave into first the millimeter-wave and subsequently the submillimeter-wave region of the spectrum(King & Gordy 1953;Helmingeret al. 1970,1983).A bibliography of the many molecules studied in the laboratory, consisting of over400 papers, is available upon request. The results presented in these papers provide the basis for the identification of a significant fraction of the interstellar spectral lines. For interstellar molecules previously detected at lower frequencies, our submillimeter-wave spectra provide the opportunity for additional study of these species under warmer conditions. For the duration of this proposal and previously, we have concentrated on those molecules with the Largest number of interstellar spectral lines. These species are so-called internal rotors, in which one portion of the molecule(normally a methyl (CH3) group) undergoes a hindered rotational motion with respect to the other portion of the molecule. The hindered rotational motion, known as torsion, leads to quantized states typically separated by 50-100 K and labeled with a quantum number vt= 0,1,2 ... For the three-fold case, each torsional state is also split into two substates-designated A and E. The existence of these extra states compared with normal molecules is of great use for probing warm regions with temperatures too low to excite normal vibrations but higher than the ambient interstellar medium. Strong interactions between torsional and rotational motion, however, make the spectra of some internal rotors quite complex and, for many years, it was very difficult if not impossible to analyze their spectra to microwave accuracy. Without such a detailed analysis, it is not possible to predict the frequencies of the many lines not measured in the laboratory with sufficient precision for use by radio astronomers, nor to determine intensities."--Page 2.
Book Synopsis Chemistry and Spectroscopy of Interstellar Molecules by : Diethard K. Bohme
Download or read book Chemistry and Spectroscopy of Interstellar Molecules written by Diethard K. Bohme and published by [Tokyo] : University of Tokyo Press. This book was released on 1992 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroscopy from Space by : Jean Demaison
Download or read book Spectroscopy from Space written by Jean Demaison and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many satellites have recently been launched or are in preparation, which operate in the microwave to IR ranges, the main objective being to observe the earth's atmosphere or interstellar clouds. Analysis of the data they supply requires extensive laboratory work because we still only have sufficiently accurate data (line positions, intensities, and profiles) for only a few species. Furthermore, the observer community is making increasing calls for laboratory data, as new development open up new observational possibilities (such as submillimeter observation). Research on these subjects involves many different areas of specialisation in fields of research that generate a wealth of data. In Spectroscopy from Space the people responsible for field observations explain which results they are expecting from their measurements and how laboratory people can help them to analyse their satellite data. Laboratory spectroscopists explain why what they can do now, and what kinds of experiment and theoretical development that might undertake to meet the needs of the remote sensing community. The problems of distributing reliable laboratory data in a timely way are also addressed.
Book Synopsis Rotational Spectroscopy of Nitrogen and Chlorine Containing Species to Guide Interstellar and Planetary Observations by : Hayley Ann Bunn
Download or read book Rotational Spectroscopy of Nitrogen and Chlorine Containing Species to Guide Interstellar and Planetary Observations written by Hayley Ann Bunn and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The following dissertation focuses on the collection and analysis of laboratory rotational spectra of molecules predicted to exist in the interstellar medium and/or planetary atmospheres. This dissertation is split into two main sections based on the terrestrial stability of target molecules. The first part investigates the use of O(1D) insertion reactions for the formation of terrestrially unstable prebiotic molecules, with a particular focus on aminomethanol (NH2CH2OH). The insertion of O(1D) into methylamine is one proposed pathway to form aminomethanol. However, this formation pathway is highly exothermic and results in a complex mixture of reaction products, complicating spectral assignment. A systematic experimental study of these reaction pathways is presented by using millimeter/ submillimeter spectroscopy in the frequency and time domain, and a kinetic box model. An examination of the implications of these results is then presented to assist in future studies aimed at forming and detecting aminomethanol. The second part of this dissertation involves the collection and analysis of the rotational spectra of 2-chloroethanol and 1,2,4-triazole, both of which are terrestrially stable but have complex spectral patterns. The spectrum of each molecule is complicated by nuclear quadrupole coupling in addition to multiple vibrational states, perturbed by Coriolis coupling. The spectra are collected in the millimeter/submillimeter regime providing spectral frequencies directly comparable to radio telescopes. This information, along with the determined rotationalconstants and high order centrifugal distortion constants, will allow for the astronomical search of each species. A complete reSE structure of 1H-1,2,4-triazole is also reported following the analysis of an additional 26 isotopologues.
Book Synopsis Laboratory Astrophysics by : Guillermo M. Muñoz Caro
Download or read book Laboratory Astrophysics written by Guillermo M. Muñoz Caro and published by Springer. This book was released on 2018-10-11 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the most recent, relevant, comprehensive and significant aspects in the well-established multidisciplinary field Laboratory Astrophysics. It focuses on astrophysical environments, which include asteroids, comets, the interstellar medium, and circumstellar and circumplanetary regions. Its scope lies between physics and chemistry, since it explores physical properties of the gas, ice, and dust present in those systems, as well as chemical reactions occurring in the gas phase, the bare dust surface, or in the ice bulk and its surface. Each chapter provides the necessary mathematical background to understand the subject, followed by a case study of the corresponding system. The book provides adequate material to help interpret the observations, or the computer models of astrophysical environments. It introduces and describes the use of spectroscopic tools for laboratory astrophysics. This book is mainly addressed to PhD graduates working in this field or observers and modelers searching for information on ice and dust processes.
Book Synopsis Laboratory Astrochemistry by : Stephan Schlemmer
Download or read book Laboratory Astrochemistry written by Stephan Schlemmer and published by John Wiley & Sons. This book was released on 2015-04-27 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by leading scientists in the field and intended for a broader readership, this is an ideal starting point for an overview of current research and developments. As such, the book covers a broad spectrum of laboratory astrophysics and chemistry, describing recent advances in experiments, as well as theoretical work, including fundamental physics and modeling chemical networks. For researchers as well as students and newcomers to the field.
Book Synopsis Astrochemistry: Recent Successes and Current Challenges (IAU S231) by : International Astronomical Union. Symposium
Download or read book Astrochemistry: Recent Successes and Current Challenges (IAU S231) written by International Astronomical Union. Symposium and published by Cambridge University Press. This book was released on 2006-04-27 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date survey of astrochemistry in the early years of the twenty-first century. For researchers and graduate students.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309376629 Total Pages :367 pages Book Rating :4.3/5 (93 download)
Book Synopsis Handbook of Frequency Allocations and Spectrum Protection for Scientific Uses by : National Academies of Sciences, Engineering, and Medicine
Download or read book Handbook of Frequency Allocations and Spectrum Protection for Scientific Uses written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2015-11-02 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electromagnetic spectrum is a vital part of our environment. Measures of radio frequency emissions from natural phenomena enable both practical applications, such as weather predictions and studies of the changing of Earth's climate here at home, and reveal the physical properties of cosmic sources. The spectrum is therefore a resource to be used wisely now and to be protected for future generations. Handbook of Frequency Allocations and Spectrum Protection for Scientific Uses: Second Edition sets forth the principles for the allocation and protection of spectral bands for services using the radio spectrum for scientific research. This report describes the radio frequency bands used by scientific services and includes relevant regulatory information and discussion of scientific use of frequency bands. This reference will guide spectrum managers and spectrum regulatory bodies on science issues and serve as a resource to scientists and other spectrum users.
Book Synopsis Electronic and Photoelectron Spectroscopy by : Andrew M. Ellis
Download or read book Electronic and Photoelectron Spectroscopy written by Andrew M. Ellis and published by Cambridge University Press. This book was released on 2005-01-13 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronic and photoelectron spectroscopy can provide extraordinarily detailed information on the properties of molecules and are in widespread use in the physical and chemical sciences. Applications extend beyond spectroscopy into important areas such as chemical dynamics, kinetics and atmospheric chemistry. This book aims to provide the reader with a firm grounding of the basic principles and experimental techniques employed. The extensive use of case studies effectively illustrates how spectra are assigned and how information can be extracted, communicating the matter in a compelling and instructive manner. Topics covered include laser-induced fluorescence, resonance-enhanced multiphoton ionization, cavity ringdown and ZEKE spectroscopy. The volume is for advanced undergraduate and graduate students taking courses in spectroscopy and will also be useful to anyone encountering electronic and/or photoelectron spectroscopy during their research.
Book Synopsis Astrochemistry and Astrobiology by : Ian W. M. Smith
Download or read book Astrochemistry and Astrobiology written by Ian W. M. Smith and published by Springer Science & Business Media. This book was released on 2012-10-28 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astrochemistry and Astrobiology is the debut volume in the new series Physical Chemistry in Action. Aimed at both the novice and experienced researcher, this volume outlines the physico-chemical principles which underpin our attempts to understand astrochemistry and predict astrobiology. An introductory chapter includes fundamental aspects of physical chemistry required for understanding the field. Eight further chapters address specific topics, encompassing basic theory and models, up-to-date research and an outlook on future work. The last chapter examines each of the topics again but addressed from a different angle. Written and edited by international experts, this text is accessible for those entering the field of astrochemistry and astrobiology, while it still remains interesting for more experienced researchers.
Book Synopsis Prebiotic Chemistry and the Origin of Life by : Anna Neubeck
Download or read book Prebiotic Chemistry and the Origin of Life written by Anna Neubeck and published by Springer Nature. This book was released on 2022-01-03 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of current views on the origin of life and its earliest evolution. Each chapter describes key processes, environments and transition on the long road from geochemistry and astrochemistry to biochemistry and finally to the ancestors of today ́s organisms. This book combines the bottom-up and the top-down approaches to life including the origin of key chemical and structural features of living cells and the nature of abiotic factors that shaped these features in primordial environments. The book provides an overview of the topic as well as its state of the art for graduate students and newcomers to the field. It also serves as a reference for researchers in origins of life on Earth and beyond.
Author :National Academies of Sciences, Engineering, and Medicine Publisher : ISBN 13 :9780309467346 Total Pages :615 pages Book Rating :4.4/5 (673 download)
Book Synopsis Pathways to Discovery in Astronomy and Astrophysics for the 2020s by : National Academies of Sciences, Engineering, and Medicine
Download or read book Pathways to Discovery in Astronomy and Astrophysics for the 2020s written by National Academies of Sciences, Engineering, and Medicine and published by . This book was released on 2022-08-04 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The steering committee was specifically asked to (1) provide an overview of the current state of astronomy and astrophysics science, and technology research in support of that science, with connections to other scientific areas where appropriate; (2) identify the most compelling science challenges and frontiers in astronomy and astrophysics, which shall motivate the committee’s strategy for the future; (3) develop a comprehensive research strategy to advance the frontiers of astronomy and astrophysics for the period 2022-2032 that will include identifying, recommending, and ranking the highest-priority research activities; (4) utilize and recommend decision rules, where appropriate, that can accommodate significant but reasonable deviations in the projected budget or changes in urgency precipitated by new discoveries or unanticipated competitive activities; (5) assess the state of the profession, including workforce and demographic issues in the field, identify areas of concern and importance to the community, and where possible, provide specific, actionable, and practical recommendations to the agencies and community to address these areas. This report proposes a broad, integrated plan for space- and ground-based astronomy and astrophysics for the decade 2023-2032. It also lays the foundations for further advances in the following decade.
Book Synopsis Atmospheric Evolution on Inhabited and Lifeless Worlds by : David C. Catling
Download or read book Atmospheric Evolution on Inhabited and Lifeless Worlds written by David C. Catling and published by Cambridge University Press. This book was released on 2017-04-13 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive and authoritative text on the formation and evolution of planetary atmospheres, for graduate-level students and researchers.
Book Synopsis But it was Fun by : Felix J. Lockman
Download or read book But it was Fun written by Felix J. Lockman and published by . This book was released on 2007 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Spectroscopy by : Jörg Grunenberg
Download or read book Computational Spectroscopy written by Jörg Grunenberg and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unique in its comprehensive coverage of not only theoretical methods but also applications in computational spectroscopy, this ready reference and handbook compiles the developments made over the last few years, from single molecule studies to the simulation of clusters and the solid state, from organic molecules to complex inorganic systems and from basic research to commercial applications in the area of environment relevance. In so doing, it covers a multitude of apparatus-driven technologies, starting with the common and traditional spectroscopic methods, more recent developments (THz), as well as rather unusual methodologies and systems, such as the prediction of parity violation, rare gas HI complexes or theoretical spectroscopy of the transition state. With its summarized results of so many different disciplines, this timely book will be of interest to newcomers to this hot topic while equally informing experts about developments in neighboring fields.
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.
