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Author : Christian Haydn
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (634 download)
Download or read book Studying the Spectral Evolution of Stellar Populations Using Artificial Neural Networks written by Christian Haydn and published by . This book was released on 2002 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maurizio Salaris
Publisher : John Wiley & Sons
ISBN 13 : 9780470092224
Total Pages : 386 pages
Book Rating : 4.0/5 (922 download)
Download or read book Evolution of Stars and Stellar Populations written by Maurizio Salaris and published by John Wiley & Sons. This book was released on 2005-12-13 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolution of Stars and Stellar Populations is a comprehensive presentation of the theory of stellar evolution and its application to the study of stellar populations in galaxies. Taking a unique approach to the subject, this self-contained text introduces first the theory of stellar evolution in a clear and accessible manner, with particular emphasis placed on explaining the evolution with time of observable stellar properties, such as luminosities and surface chemical abundances. This is followed by a detailed presentation and discussion of a broad range of related techniques, that are widely applied by researchers in the field to investigate the formation and evolution of galaxies. This book will be invaluable for undergraduates and graduate students in astronomy and astrophysics, and will also be of interest to researchers working in the field of Galactic, extragalactic astronomy and cosmology. comprehensive presentation of stellar evolution theory introduces the concept of stellar population and describes "stellar population synthesis" methods to study ages and star formation histories of star clusters and galaxies presents stellar evolution as a tool for investigating the evolution of galaxies and of the universe in general
Author : Alex Andre Schmidt
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (6 download)
Download or read book Stellar Population Studies in Galaxy Nuclei written by Alex Andre Schmidt and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard O. Gray
Publisher : Princeton University Press
ISBN 13 : 0691125112
Total Pages : 611 pages
Book Rating : 4.6/5 (911 download)
Download or read book Stellar Spectral Classification written by Richard O. Gray and published by Princeton University Press. This book was released on 2009-03-29 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by leading experts in the field, Stellar Spectral Classification is the only book to comprehensively discuss both the foundations and most up-to-date techniques of MK and other spectral classification systems. Definitive and encyclopedic, the book introduces the astrophysics of spectroscopy, reviews the entire field of stellar astronomy, and shows how the well-tested methods of spectral classification are a powerful discovery tool for graduate students and researchers working in astronomy and astrophysics. The book begins with a historical survey, followed by chapters discussing the entire range of stellar phenomena, from brown dwarfs to supernovae. The authors account for advances in the field, including the addition of the L and T dwarf classes; the revision of the carbon star, Wolf-Rayet, and white dwarf classification schemes; and the application of neural nets to spectral classification. Copious figures illustrate the morphology of stellar spectra, and the book incorporates recent discoveries from earth-based and satellite data. Many examples of spectra are given in the red, ultraviolet, and infrared regions, as well as in the traditional blue-violet optical region, all of which are useful for researchers identifying stellar and galactic spectra. This essential reference includes a glossary, handy appendixes and tables, an index, and a Web-based resource of spectra. In addition to the authors, the contributors are Adam J. Burgasser, Margaret M. Hanson, J. Davy Kirkpatrick, and Nolan R. Walborn.
Author : Eija Laurikainen
Publisher : Springer
ISBN 13 : 3319193783
Total Pages : 480 pages
Book Rating : 4.3/5 (191 download)
Download or read book Galactic Bulges written by Eija Laurikainen and published by Springer. This book was released on 2015-09-29 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of invited reviews on Galactic Bulges written by experts in the field. A central point of the book is that, while in the standard picture of galaxy formation a significant amount of the baryonic mass is expected to reside in classical bulges, the question what is the fraction of galaxies with no classical bulges in the local Universe has remained open. The most spectacular example of a galaxy with no significant classical bulge is the Milky Way. The reviews of this book attempt to clarify the role of the various types of bulges during the mass build-up of galaxies, based on morphology, kinematics and stellar populations and connecting their properties at low and high redshifts. The observed properties are compared with the predictions of the theoretical models, accounting for the many physical processes leading to the central mass concentration and their destruction in galaxies. This book serves as an entry point for PhD students and non-specialists and as a reference work for researchers in the field.
Author : Arthur Eigenbrot
Publisher :
ISBN 13 :
Total Pages : 446 pages
Book Rating : 4.:/5 (1 download)
Download or read book Three Dimensional Population Gradients in NGC 891 written by Arthur Eigenbrot and published by . This book was released on 2016 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of the Milky Way show that the vertical velocity dispersion of stars in the disk tends to increase with age. However it is not clear how this "heating" ties into the formation of the observed Milky Way disk structure, or disk galaxies in general. In this thesis I present a study of stellar populations in NGC 891 that adds information to our information on the structure of galaxies outside the Milky Way. This study was enabled by the construction of HexPak/GradPak, two fiber integral field units that together form the worlds first dual-head, multi-pitch fiber instrument. The unique design of GradPak allowed for the rapid collection of high quality data over a large range in surface brightness and at a high filling factor. Using GradPak I measure trends in stellar population as revealed by both spectral indices and full-spectrum fitting. I find that the overall picture of disk heating in NGC 891 is remarkably similar to trends measured in the Milky Way; the presence of young populations is abruptly cut off at about 1 scale height. Furthermore I find that populations generally get younger farther from the center of NGC 891, perhaps the signature of an inside-out formation scenario. It also appears that each generation of stars forms a flared disk, with later generations forming flares at larger radii. Finally, I identify two distinct epochs in the enrichment history of NGC 891: (i) a period of self-enrichment lasting from galaxy formation until about 6 Gyr ago, and (ii) a period of decreasing metallicity caused by the infall of pristine gas from outside the galaxy that began 6 Gyr ago and continues today.
Author : David Mark Wilkinson
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)
Download or read book Full Spectral Fitting of Stellar Population Models for Studies of Galaxy Evolution written by David Mark Wilkinson and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hillol Kargupta
Publisher : SIAM
ISBN 13 : 9780898715934
Total Pages : 670 pages
Book Rating : 4.7/5 (159 download)
Download or read book Proceedings of the Fifth SIAM International Conference on Data Mining written by Hillol Kargupta and published by SIAM. This book was released on 2005-04-01 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fifth SIAM International Conference on Data Mining continues the tradition of providing an open forum for the presentation and discussion of innovative algorithms as well as novel applications of data mining. Advances in information technology and data collection methods have led to the availability of large data sets in commercial enterprises and in a wide variety of scientific and engineering disciplines. The field of data mining draws upon extensive work in areas such as statistics, machine learning, pattern recognition, databases, and high performance computing to discover interesting and previously unknown information in data. This conference results in data mining, including applications, algorithms, software, and systems.
Author : Adrian-Horia Dediu
Publisher : Springer
ISBN 13 : 3642338607
Total Pages : 237 pages
Book Rating : 4.6/5 (423 download)
Download or read book Theory and Practice of Natural Computing written by Adrian-Horia Dediu and published by Springer. This book was released on 2012-09-26 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the First International Conference, TPNC 2012, held in Tarragona, Spain, in October 2012. The 12 revised full papers presented together with 6 invited talks were carefully reviewed and selected from 34 submissions. The papers are organized in topical sections on nature-inspired models of computation; synthesizing nature by means of computation; nature-inspired materials; and information processing in nature.
Author : B. Barbuy
Publisher : Springer Science & Business Media
ISBN 13 : 9401124345
Total Pages : 529 pages
Book Rating : 4.4/5 (11 download)
Download or read book The Stellar Populations of Galaxies written by B. Barbuy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: One approach to learning about stellar populations is to study them at three different levels of resolution. First in our own Galaxy; secondly from nearby galaxies where stars can still be resolved; and thirdly in remote galaxies in which the stellar population can only be studied in integrated light. This IAU Symposium covered the entire range of galaxies in its study of their stellar populations. Interspersed with theoretical papers, the wealth of observational results provides an important state-of-the-art presentation of the progress that has been made in this field.
Author :
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chengyuan Li
Publisher : Springer
ISBN 13 : 9811056811
Total Pages : 137 pages
Book Rating : 4.8/5 (11 download)
Download or read book Not-So-Simple Stellar Populations in Star Clusters written by Chengyuan Li and published by Springer. This book was released on 2017-09-19 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on understanding the stellar populations of massive star clusters and aims to investigate the origin, evolution and properties of binary systems, their collision products, as well as the general characteristics (e.g. ages, metal content) of stellar population(s) in star clusters. It introduces the basic background knowledge of various stellar populations in star clusters as well as their formation, interaction and evolution and offers high impact observational results on our understanding of the formation and evolution mode of star clusters. Based on these discoveries, this book proposes a series of future projects that can shed light on these topics. The research introduced in this book reveals key features of star clusters formation and by extension how all stars formed in our universe.
Author : George Ellery Hale
Publisher :
ISBN 13 :
Total Pages : 480 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Study of Stellar Evolution written by George Ellery Hale and published by . This book was released on 1908 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard J. Tuffs
Publisher : Cambridge University Press
ISBN 13 : 9781107019843
Total Pages : 533 pages
Book Rating : 4.0/5 (198 download)
Download or read book The Spectral Energy Distribution of Galaxies - SED 2011 (IAU S284) written by Richard J. Tuffs and published by Cambridge University Press. This book was released on 2012-08-30 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent observational developments are providing the first truly panchromatic view of galaxies, extending from the radio to TeV gamma-rays. This is motivating the development of new models for the interpretation of spectral energy distributions (SEDs) of galaxies in terms of the formation, evolution and emission of stellar and accretion-driven sources of photons, the interaction of the photons with the gaseous and dust components of the interstellar medium, and high-energy processes involving cosmic rays. IAU Symposium 284 details progress in the development of such models, their relation to fundamental theory, and their application to the interpretation of the panchromatic emission from the Milky Way and nearby galaxies, connecting the latter with models for the evolution of the SEDs of distant galaxies, and the extragalactic background light. IAU S284 is a useful resource for all researchers working with the copious amounts of multiwavelength data for galaxies now becoming available.
Author : Eric D. Feigelson
Publisher : Springer Science & Business Media
ISBN 13 : 146143520X
Total Pages : 544 pages
Book Rating : 4.4/5 (614 download)
Download or read book Statistical Challenges in Modern Astronomy V written by Eric D. Feigelson and published by Springer Science & Business Media. This book was released on 2012-08-15 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains a selection of chapters based on papers to be presented at the Fifth Statistical Challenges in Modern Astronomy Symposium. The symposium will be held June 13-15th at Penn State University. Modern astronomical research faces a vast range of statistical issues which have spawned a revival in methodological activity among astronomers. The Statistical Challenges in Modern Astronomy V conference will bring astronomers and statisticians together to discuss methodological issues of common interest. Time series analysis, image analysis, Bayesian methods, Poisson processes, nonlinear regression, maximum likelihood, multivariate classification, and wavelet and multiscale analyses are all important themes to be covered in detail. Many problems will be introduced at the conference in the context of large-scale astronomical projects including LIGO, AXAF, XTE, Hipparcos, and digitized sky surveys.
Author :
Publisher :
ISBN 13 :
Total Pages : 1042 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gestal Pose, Marcos
Publisher : IGI Global
ISBN 13 : 1615208941
Total Pages : 452 pages
Book Rating : 4.6/5 (152 download)
Download or read book Soft Computing Methods for Practical Environment Solutions: Techniques and Studies written by Gestal Pose, Marcos and published by IGI Global. This book was released on 2010-05-31 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This publication presents a series of practical applications of different Soft Computing techniques to real-world problems, showing the enormous potential of these techniques in solving problems"--Provided by publisher.
