Fragmentation Of Molecular Clouds And Star Formation

Author : E. Falgarone,F. Boulanger,G. Duvert
Publisher : Springer Science & Business Media
Page : 557 pages
File Size : 51,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401133845

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Fragmentation of Molecular Clouds and Star Formation by E. Falgarone,F. Boulanger,G. Duvert Pdf

A few years ago, a motivation for organizing one more IAU Symposium on star for mation in Grenoble, was the anticipated completion of the IRAM interferometer on the Plateau de Bures, close to Grenoble. This choice was also a sort of late celebration of the genius of Joseph Fourier, born in Grenoble, whose work is the very fondation of in terferometry. At the time when we finally announced the advent of this conference, the first reactions we got from the community were expressions of saturation and even reject, the Symposium being unfortunately scheduled almost simultaneously as two other major meetings on closely related topics, and sponsored by different organizations. A wave of disappointment then reached the organizers. Some of us were enthusiastic enough to help the others overcome their discouragement. Let them be thanked here. There was, indeed, a deeper motivation for organizing this conference. It was to trigger the meeting and communication of physicists and astrophysicists since many of the difficulties met now in understanding the physics of the interstellar medium and its evolution toward star formation are common to several, if not most, other fields of physics. They are assigned to one origin: complexity.

Author : E. Falgarone,F. Boulanger,G. Duvert
Publisher : Springer
Page : 556 pages
File Size : 45,7 Mb
Release : 1991-03-31
Category : Science
ISBN : 0792311590

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Fragmentation of Molecular Clouds and Star Formation by E. Falgarone,F. Boulanger,G. Duvert Pdf

A few years ago, a motivation for organizing one more IAU Symposium on star for mation in Grenoble, was the anticipated completion of the IRAM interferometer on the Plateau de Bures, close to Grenoble. This choice was also a sort of late celebration of the genius of Joseph Fourier, born in Grenoble, whose work is the very fondation of in terferometry. At the time when we finally announced the advent of this conference, the first reactions we got from the community were expressions of saturation and even reject, the Symposium being unfortunately scheduled almost simultaneously as two other major meetings on closely related topics, and sponsored by different organizations. A wave of disappointment then reached the organizers. Some of us were enthusiastic enough to help the others overcome their discouragement. Let them be thanked here. There was, indeed, a deeper motivation for organizing this conference. It was to trigger the meeting and communication of physicists and astrophysicists since many of the difficulties met now in understanding the physics of the interstellar medium and its evolution toward star formation are common to several, if not most, other fields of physics. They are assigned to one origin: complexity.

Author : Roberto Capuzzo-Dolcetta,C. Chiosi,Alberto Di Fazio
Publisher : Springer Science & Business Media
Page : 462 pages
File Size : 44,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400906051

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Physical Processes in Fragmentation and Star Formation by Roberto Capuzzo-Dolcetta,C. Chiosi,Alberto Di Fazio Pdf

Recent years have witnessed the expansion and multiplication of the observations of star formation and fragmentation accompanied by a consequent growth in the study of the underlying physical processes, the chemistry, the sites, the times, etc. Moreover, recent studies have shown that the formation of stars is likely to share many features with the formation of other self-gravitating objects. The present volume, therefore, discusses the formation of such objects in a systematic and comparative manner.

Author : Ke Wang
Publisher : Unknown
Page : 168 pages
File Size : 55,9 Mb
Release : 2014-11-30
Category : Electronic
ISBN : 3662449706

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The Earliest Stages of Massive Clustered Star Formation by Ke Wang Pdf

Author : Steven W. Stahler,Francesco Palla
Publisher : John Wiley & Sons
Page : 865 pages
File Size : 46,7 Mb
Release : 2008-07-11
Category : Science
ISBN : 9783527618682

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The Formation of Stars by Steven W. Stahler,Francesco Palla Pdf

This book is a comprehensive treatment of star formation, one of the most active fields of modern astronomy. The reader is guided through the subject in a logically compelling manner. Starting from a general description of stars and interstellar clouds, the authors delineate the earliest phases of stellar evolution. They discuss formation activity not only in the Milky Way, but also in other galaxies, both now and in the remote past. Theory and observation are thoroughly integrated, with the aid of numerous figures and images. In summary, this volume is an invaluable resource, both as a text for physics and astronomy graduate students, and as a reference for professional scientists.

Author : Anne-Katharina Jappsen
Publisher : Sudwestdeutscher Verlag Fur Hochschulschriften AG
Page : 152 pages
File Size : 55,8 Mb
Release : 2009
Category : Electronic
ISBN : 383810417X

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Present-day and Early Star Formation by Anne-Katharina Jappsen Pdf

Stars form from molecular cloud cores by gravoturbulent fragmentation. Understanding the angular momentum and the thermal evolution of cloud cores thus plays a fundamental role in completing the theoretical picture of star formation. This is true not only for current star formation as observed in regions like the Orion nebula or the -Ophiuchi molecular cloud but also for the formation of stars of the first or second generation in the universe. In this thesis we show how the angular momentum of prestellar and protostellar cores evolves and compare our results from hydrodynamical simulations with observed quantities. We find that collapse induced by gravoturbulent fragmentation is accompanied by a substantial loss of specific angular momentum. This eases the "angular momentum problem" in star formation. The distribution of stellar masses at birth (the initial mass function, IMF) is another aspect that any theory of star formation must explain. Our investigation generally supports the idea that the distribution of stellar masses depends mainly on the thermodynamic state of the gas.

Author : Peter Bodenheimer
Publisher : Springer Science & Business Media
Page : 352 pages
File Size : 52,7 Mb
Release : 2011-07-10
Category : Science
ISBN : 9783642150630

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Principles of Star Formation by Peter Bodenheimer Pdf

Understanding star formation is one of the key fields in present-day astrophysics. This book treats a wide variety of the physical processes involved, as well as the main observational discoveries, with key points being discussed in detail. The current star formation in our galaxy is emphasized, because the most detailed observations are available for this case. The book presents a comparison of the various scenarios for star formation, discusses the basic physics underlying each one, and follows in detail the history of a star from its initial state in the interstellar gas to its becoming a condensed object in equilibrium. Both theoretical and observational evidence to support the validity of the general evolutionary path are presented, and methods for comparing the two are emphasized. The author is a recognized expert in calculations of the evolution of protostars, the structure and evolution of disks, and stellar evolution in general. This book will be of value to graduate students in astronomy and astrophysics as well as to active researchers in the field.

Author : Charles J. Lada,N.D. Kylafis
Publisher : Springer Science & Business Media
Page : 756 pages
File Size : 50,9 Mb
Release : 1999-07-31
Category : Science
ISBN : 9780792359098

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The Origin of Stars and Planetary Systems by Charles J. Lada,N.D. Kylafis Pdf

The Origin of Stars and Planetary Systems is a collection of tutorial reviews that critically and systematically discuss the current state of our knowledge of star formation and early stellar evolution, from the genesis of giant molecular clouds to the birth of young stars and their surrounding planetary systems. The chapters are written at the graduate student level by a group of twenty internationally distinguished scientists. The emphasis is on fundamentals rather than recent research results. The book thus provides a rigorous treatment of the basic empirical and theoretical foundations of modern star formation research. The book is a unique reference, based on the authors' own pioneering research. Readership: Primary or supplementary text for graduate courses on star formation. Basic reference for professional scientists needing a solid background in the area.

Author : G.E. Morfill,M. Scholer
Publisher : Springer Science & Business Media
Page : 551 pages
File Size : 49,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400939455

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Physical Processes in Interstellar Clouds by G.E. Morfill,M. Scholer Pdf

This book is the result of a meeting held in August, 1986 in Irsee, West Germany. As the title suggests, the aim of the meeting was to discuss physical processes in interstellar clouds, determine the current status, aims and future direction of the research in this area. Interstellar clouds contain nearly all the mass of diffuse gas in our galaxy, some 10% of the total galactic mass. They represent the birth site for stars and the final "dumping ground" for matter ejected from stars (winds, ex plosive ejecta) and thus play an integral part in the galactic recycling of material. Not only are the clouds important for the structure and evolution of our galaxy, they are also interesting objects of study "per se". Because of their vast scales (up to about 100 parsec), extreme temperatures (as low as about lOOK), and long life 8 times (estimated a about 10 years) a number of physical and chemical processes occur in these environments, which we are not able to study elesewhere, certainly not in laboratories. It is for this reason that the meeting, and hence this book, was organized in such a way that firstly the latest observational results were sum m~ized, going from the global, large scales, to finer details and dynamics, then progressing onwards to the processes -dynamical, chemical, electromagnetic, etc.

Author : Henny J. G. L. M. Lamers,Emily M. Levesque
Publisher : CRC Press
Page : 342 pages
File Size : 52,7 Mb
Release : 2018-02-28
Category : Stars
ISBN : 0750312793

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Understanding Stellar Evolution by Henny J. G. L. M. Lamers,Emily M. Levesque Pdf

'Understanding Stellar Evolution' is based on a series of graduate-level courses taught at the University of Washington since 2004, and is written for physics and astronomy students and for anyone with a physics background who is interested in stars. It describes the structure and evolution of stars, with emphasis on the basic physical principles and the interplay between the different processes inside stars such as nuclear reactions, energy transport, chemical mixing, pulsation, mass loss, and rotation. Based on these principles, the evolution of low- and high-mass stars is explained from their formation to their death. In addition to homework exercises for each chapter, the text contains a large number of questions that are meant to stimulate the understanding of the physical principles. An extensive set of accompanying lecture slides is available for teachers in both Keynote(R) and PowerPoint(R) formats.

Author : Robert L. Dickman,Ronald Lee Snell,Judith S. Young
Publisher : Unknown
Page : 504 pages
File Size : 50,9 Mb
Release : 1988
Category : Astronomy
ISBN : UOM:39015017177935

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Molecular Clouds in the Milky Way and External Galaxies by Robert L. Dickman,Ronald Lee Snell,Judith S. Young Pdf

The volume consists of up-to-date reviews and a selection of contributed papers on subjects including the structure and physical properties of molecular clouds, their role in the star formation process, their dust and chemical properties, molecular cloud surveys of the Milky Way, cloud evolution, problems in cloud mass determinations (a panel discussion and review), the CO properties of external galaxies, nuclei of galaxies as revealed by molecular observations, and galactic spiral structure as reflected by molecular cloud distributions. The abstracts of poster papers on these topics presented at the conference are also included. This book is both a valuable reference and a compendium of current knowledge in this field. It should be of special interest to all students and researchers who work on the physics of star formation, the interstellar medium, molecular clouds and galactic structure.

Author : Norbert S. Schulz
Publisher : Springer Science & Business Media
Page : 530 pages
File Size : 43,7 Mb
Release : 2012-05-24
Category : Science
ISBN : 9783642239267

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The Formation and Early Evolution of Stars by Norbert S. Schulz Pdf

Starburst regions in nearby and distant galaxies have a profound impact on our understanding of the early universe. This new, substantially updated and extended edition of Norbert Schulz’s unique book "From Dust to Stars" describes complex physical processes involved in the creation and early evolution of stars. It illustrates how these processes reveal themselves from radio wavelengths to high energy X-rays and gamma–rays, with special reference towards high energy signatures. Several sections devoted to key analysis techniques demonstrate how modern research in this field is pursued and new chapters are introduced on massive star formation, proto-planetary disks and observations of young exoplanets. Recent advances and contemporary research on the theory of star formation are explained, as are new observations, specifically from the three great observatories of the Spitzer Space Telescope, the Hubble Space Telescope and the Chandra X-Ray Observatory which all now operate at the same time and make high resolution space based observing in its prime. As indicated by the new title two new chapters have been included on proto-planetary disks and young exoplanets. Many more colour images illustrate attractive old and new topics that have evolved in recent years. The author gives updates in theory, fragmentation, dust, and circumstellar disks and emphasizes and strengthens the targeting of graduate students and young researchers, focusing more on computational approaches in this edition.

Author : V C Reddish
Publisher : Elsevier
Page : 304 pages
File Size : 46,9 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483139555

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Stellar Formation by V C Reddish Pdf

Stellar Formation focuses on the properties, distributions, characteristics, and formation of stars and galaxies. The manuscript first offers information on locations of star formation, as well as the distribution of interstellar gas, clouds, and globules; spatial relationships between young stars and interstellar matter; and distribution of young stars. The book also tackles frequency distribution of stellar masses and aggregates of stars. The text ponders on the frequency distribution of cloud masses, rate and environment of star formation, and cloud structure in the interstellar gas. The publication also examines the fragmentation of clouds into protostars and the frequency distribution of protostar masses, rate of formation of stars, and evolution of galaxies. Discussions focus on random fragmentation, gravitational turbulence, and fragmentation induced by molecule formation. The manuscript is a vital reference for scientists and readers interested in stellar formation.

Author : M.S. Nanda Kumar,M. Tafalla,P. Caselli
Publisher : Springer Science & Business Media
Page : 232 pages
File Size : 43,5 Mb
Release : 2008-04-07
Category : Science
ISBN : 9780387263571

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Cores to Clusters by M.S. Nanda Kumar,M. Tafalla,P. Caselli Pdf

It was with pleasure that CAUP became for three days the core to the cloud of star formation experts all over the world. Close to the celebration of its 15th anniversary – therefore still in the early stages of institutional evolution – we are proud of our multiple activities in Astronomy: a productive research centre, classi?ed as “Institution of excellence” within the Portuguese research units, but also an “Institution of Public Utility” as recognised by the Government. Fifteen years ago we choose to play a role not only in research, as expected from any research centre but also in the training of the future astronomers and the promotion of science and scienti?c culture. This choice is clearly stated in our by-laws and also in the multiple activities we have carried out since. Along the years we have organized on a regular basis international Workshops similar to “Cores to Clusters”. Sometimes we have chosen to organize int- national conferences of a larger size. On other occasions the choice has been for smaller and more informal discussion meetings. Or even doctoral schools with very different objectives. In common all those meetings have always had, besides the formal registered participants, a group of informal participants, our undergraduate students of Astronomy, so eager to be in touch with the real world.

Author : Astronomisches Rechen-Institut
Publisher : Springer Science & Business Media
Page : 1592 pages
File Size : 46,6 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783662123768

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Literature 1991, Part 2 by Astronomisches Rechen-Institut Pdf

"Astronomy and Astrophysics Abstracts" appearing twice a year has become oneof the fundamental publications in the fields of astronomy, astrophysics andneighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. The abstrats are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world.