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Studies Of Extremely Young Clusters
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Book Synopsis Studies of Extremely Young Clusters by : Merle F. Walker
Download or read book Studies of Extremely Young Clusters written by Merle F. Walker and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Birth of Star Clusters by : Steven Stahler
Download or read book The Birth of Star Clusters written by Steven Stahler and published by Springer. This book was released on 2017-11-04 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: All stars are born in groups. The origin of these groups has long been a key question in astronomy, one that interests researchers in star formation, the interstellar medium, and cosmology. This volume summarizes current progress in the field, and includes contributions from both theorists and observers. Star clusters appear with a wide range of properties, and are born in a variety of physical conditions. Yet the key question remains: How do diffuse clouds of gas condense into the collections of luminous objects we call stars? This book will benefit graduate students, newcomers to the field, and also experienced scientists seeking a convenient reference.
Book Synopsis Publications of the United States Naval Observatory by : United States Naval Observatory
Download or read book Publications of the United States Naval Observatory written by United States Naval Observatory and published by . This book was released on 1968 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Reference Publication written by and published by . This book was released on 1987 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Complex Lives of Star Clusters by : David Stevenson
Download or read book The Complex Lives of Star Clusters written by David Stevenson and published by Springer. This book was released on 2015-05-09 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: As with the author’s recent books Extreme Explosions and Under a Crimson Sun, the complex topic of star clusters is broken down and made accessible with clear links to other areas of astronomy in a language which the non-specialist can easily read and enjoy. The full range of topics are addressed regarding how star clusters are formed. Why is it some are dense conglomerates of stars while others are looser associations? Are the young, brilliant clusters seen in neighboring galaxies such as the Large Magellanic Cloud, M33 or M82 analogous to the ancient globulars seen in the Milky Way? How will these clusters change as their stars wane and die? More interestingly, how does living in a dense star cluster affect the fates of the stars and any attendant planets that accompany them? Star clusters form many of the most dazzling objects in the astronomers’ catalogs. Many amateur astronomers are interested in exploring how these objects are created and what it would be like to live among these objects. From the historical views of how star clusters came about to the most recent assumptions about how stars within these clusters evolve, different strands of science, from observation to theory, are woven together into a compelling investigation specifically targeted at amateur astronomers.
Author :Jean-Claude Mermilliod Publisher :Springer Science & Business Media ISBN 13 :1461384362 Total Pages :1390 pages Book Rating :4.4/5 (613 download)
Book Synopsis Catalogue of Mean UBV Data on Stars by : Jean-Claude Mermilliod
Download or read book Catalogue of Mean UBV Data on Stars written by Jean-Claude Mermilliod and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This catalog contains data on the magnitudes of more than 100,000 stars in the Galaxy. For each star listed, the catalog gives the position, identification, and ultraviolet, blue and visual magnitude from photoelectric measurements. The measurements from which these mean values were computed were collected from observations published between 1953 and 1992. The volume includes more than 1400 references.
Download or read book Star Clusters written by J.E. Hesser and published by Springer. This book was released on 1980-02-29 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 85th Symposium on the International Astronomical Union held in Victoria, B.C., Canada, August 27-30, 1979
Book Synopsis Very Low-Mass Stars and Brown Dwarfs by : Rafael Rebolo
Download or read book Very Low-Mass Stars and Brown Dwarfs written by Rafael Rebolo and published by Cambridge University Press. This book was released on 2000-11-27 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a state-of-the-art review of our current knowledge of brown dwarfs and very low-mass stars. The hunt for and study of these elusive objects is currently one of the most dynamic areas of research in astronomy for two reasons. Brown dwarfs bridge the gap between stars and planets, and they may constitute an important part of the 'dark matter' of the Universe. This volume presents review articles from a team of international authorities who gathered at a conference in La Palma to assess the spectacular progress that has been made in this field in the last few years.
Book Synopsis The Spatial Structure of Young Stellar Clusters by : Michael Kuhn
Download or read book The Spatial Structure of Young Stellar Clusters written by Michael Kuhn and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Star formation is an extremely active area of astronomical research, and young stellar clusters in our Galaxy offer a useful laboratory where star-formation processes can be studied. Young stars form from the the gravitational collapse of molecular clouds that have a hierarchical spatial structure. This leads to stars forming in clustered environments, often with thousands of other young stars in environments that are strongly affected by feedback from massive O-type stars. The environments in these massive star-forming regions (MSFR) can affect how stars form and whether the young stellar clusters remain bound after star formation ends, both of which are questions that have received considerable attention from researchers. Studies of stellar populations in Galactic MSFRs are made difficult due to large numbers of fields stars in the Galactic Plane, large areas of the sky that must be surveyed, high optical extinction from dust, and nebulosity in the the optical and infrared. The Massive Young Star-Forming Complex Study in Infrared and X-ray (MYStIX) uses multiwavelength observations to overcome some of these difficulties, providing some of the most complete, clean membership lists for 20 MSFRs within 3.6 kpc of the Sun. I described X-ray catalogs and mid-infrared catalogs that were used in this survey. The spatial distribution of young stars in 17 MYStIX regions are used to probe the origin and dynamics of the young stellar clusters. Intrinsic stellar surface-density maps are made for each region, which reveal complex structures with dense subclusters. I examine in detail one of the nearest MYStIX young stellar clusters, W~40 (d=500 pc), which has properties similar to many of the subclusters in more massive and more distant star-forming regions. The cluster in W~40 has a simple structure with mass segregation, indicating that it has undergone dynamical evolution, even though its young age (~0.8 Myr) is insufficient for relaxation from two-body interactions. This apparent contradiction may be evidence of more rapid dynamical evolution accelerated by the merger of subclusters. Overall, 142 subclusters of young stars are found in the 17 MSFRs using the statistical "finite-mixture model" cluster analysis method, and the intrinsic stellar populations for these clusters are inferred using "initial mass functions" and "X-ray luminosity functions." Four structural classes are seen in MSFR: linear chains of subclusters, clumpy structures, core-halo structures, and simple isolated clusters. The subclusters do follow the structure of the molecular clouds, but do not appear to be coeval with each other. There is strong evidence in the subcluster properties for gas expulsion and subcluster expansion (e.g., the density~radius and age~radius relations), and evidence that is consistent with subcluster mergers (e.g., the ellipticity distribution and the number~density}$ relation). The cluster analysis provides evidence to support hierarchical models of stellar cluster formation, which have been theorized to explain mass segregation and dynamical relaxation in very young clusters. The ~1 Myr age spreads in the subclusters of a MSFR appear to require slower star-formation in giant molecular clouds with continually driven turbulence, rather than clouds with rapidly decaying turbulence. And, the diverse range of stellar surface density environment in MSFRs will have implications for models of cluster survival after gas removal.
Book Synopsis Catalog of Infrared Observations by : Daniel Y. Gezari
Download or read book Catalog of Infrared Observations written by Daniel Y. Gezari and published by . This book was released on 1987 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Literature 1972, Part 1 by : Siegfried Böhme
Download or read book Literature 1972, Part 1 written by Siegfried Böhme and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of Iiterature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original Iiterature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Valurne 7 contains Iiterature published in 1972 and received before August 15, 1972; some older Iiter ature which was received late and which is not recorded in earlier volumes is also included.
Book Synopsis Catalog of Infrared Observations: Appendixes by : Daniel Y. Gezari
Download or read book Catalog of Infrared Observations: Appendixes written by Daniel Y. Gezari and published by . This book was released on 1987 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interstellar Turbulence by : José Franco
Download or read book Interstellar Turbulence written by José Franco and published by Cambridge University Press. This book was released on 1999-05-28 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely volume presents a series of review articles covering every aspect of interstellar turbulence--from accretion disks, molecular clouds, atomic and ionized media, through to spiral galaxies - based on a major international conference held in Mexico City.With advances in observational techniques and the development of more efficient computer codes and faster computers, research in this area has made spectacular progress in recent years. This book provides a comprehensive overview of the most important developments in observing and modelling turbulent flows in the cosmos. It provides graduate student and researchers with a state-of-the-art summary of observational, theoretical and computational research in interstellar turbulence.
Book Synopsis The Formation and Evolution of Star Clusters by : Simon Goodwin
Download or read book The Formation and Evolution of Star Clusters written by Simon Goodwin and published by Imperial College Press. This book was released on 2013-09-01 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past decade, our picture of star and cluster formation has changed hugely, we now believe that many — if not most — stars form in clusters, and the process of star and cluster formation is extremely rapid and dynamic. This book will provide an overview of our current understanding of the formation and evolution of star clusters. This book will cover our understanding of how gas turns into stars and the structure and kinematics of very young star forming regions. It will then describe how we think these young star forming regions evolve into clusters before destroying themselves. It will also cover our understanding of young clusters in external galaxies, especially starbursts, and how these populations could evolve into globular cluster systems.
Book Synopsis Galactic and Solar System Optical Astrometry by : L. V. Morrison
Download or read book Galactic and Solar System Optical Astrometry written by L. V. Morrison and published by Cambridge University Press. This book was released on 1994-05-26 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astrometry - the study of the positions of astronomical objects and how they move across the sky - is a cornerstone of modern astronomy. Pinning down the distances to and motions of stars in our Galaxy is fundamental - it can lead to an understanding of the origin of these stars and how together they affect the evolution of our Galaxy. Similarly, measuring the motions of planets, their satellites and asteroids is crucial to unravelling the origin and evolution of our solar system (as well as to the planning of space missions to explore them). A workshop held jointly by the Royal Greenwich Observatory and the Institute of Astronomy, in Cambridge, offered an unusual opportunity to bring together astronomers from the fields of Galactic and solar system astrometry. Gathered in this volume are the articles they presented. Together, these provide an auspicious review of optical astrometry and our understanding of the evolution of the Galaxy and solar system for graduate students and researchers.
Book Synopsis The Future of Small Telescopes in the New Millennium: Science in the shadows of giants by : Terry D. Oswalt
Download or read book The Future of Small Telescopes in the New Millennium: Science in the shadows of giants written by Terry D. Oswalt and published by Taylor & Francis US. This book was released on 2003 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: