The Stellar Initial Mass Function and Total Mass Profiles of Early-type Galaxies

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Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (95 download)

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Book Synopsis The Stellar Initial Mass Function and Total Mass Profiles of Early-type Galaxies by : Adriano Poci

Download or read book The Stellar Initial Mass Function and Total Mass Profiles of Early-type Galaxies written by Adriano Poci and published by . This book was released on 2015 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The universality of the stellar Initial Mass Function (IMF) remains an open question to this day. Studies where individual stars can be counted provide strong evidence for universality in and around the Milky Way, while recent extragalactic studies find evidence for a dependence on galactic properties. In this work, we constrain the systematic variations of the IMF that have been observed in early-type galaxies, by constructing detailed dynamical models from kinematic observations. We account for the effects of spatially-varying stellar populations by computing star-formation histories from the observed spectra, and incorporating the resulting stellar mass-to-light ratio variations into the dynamical models. In addition, we determine total mass distributions, and separate the contributions from the stellar and dark matter components. This allows for inferences on the central dark matter fraction, as well as constraints on scaling relations of the total mass profile slope with galactic observables.

Fundamentals of Galaxy Dynamics, Formation and Evolution

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Publisher : UCL Press
ISBN 13 : 1911307614
Total Pages : 200 pages
Book Rating : 4.9/5 (113 download)

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Book Synopsis Fundamentals of Galaxy Dynamics, Formation and Evolution by : Ignacio Ferreras

Download or read book Fundamentals of Galaxy Dynamics, Formation and Evolution written by Ignacio Ferreras and published by UCL Press. This book was released on 2019-04-02 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Galaxies, along with their underlying dark matter halos, constitute the building blocks of structure in the Universe. Of all fundamental forces, gravity is the dominant one that drives the evolution of structures from small density seeds at early times to the galaxies we see today. The interactions among myriads of stars, or dark matter particles, in a gravitating structure produce a system with fascinating connotations to thermodynamics, with some analogies and some fundamental differences. Ignacio Ferreras presents a concise introduction to extragalactic astrophysics, with emphasis on stellar dynamics, and the growth of density fluctuations in an expanding Universe. Additional chapters are devoted to smaller systems (stellar clusters) and larger ones (galaxy clusters). Fundamentals of Galaxy Dynamics, Formation and Evolution is written for advanced undergraduates and beginning postgraduate students, providing a useful tool to get up to speed in a starting research career. Some of the derivations for the most important results are presented in detail to enable students appreciate the beauty of maths as a tool to understand the workings of galaxies. Each chapter includes a set of problems to help the student advance with the material.

The Initial Mass Function in Early-type Galaxies

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Publisher :
ISBN 13 : 9789036763868
Total Pages : 188 pages
Book Rating : 4.7/5 (638 download)

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Book Synopsis The Initial Mass Function in Early-type Galaxies by :

Download or read book The Initial Mass Function in Early-type Galaxies written by and published by . This book was released on 2013 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Stellar Initial Mass Function

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Publisher : Gordon & Breach Publishing Group
ISBN 13 : 9780677215600
Total Pages : 309 pages
Book Rating : 4.2/5 (156 download)

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Book Synopsis The Stellar Initial Mass Function by : John M. Scalo

Download or read book The Stellar Initial Mass Function written by John M. Scalo and published by Gordon & Breach Publishing Group. This book was released on 1986-01-01 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Planets, Stars and Stellar Systems

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Publisher : Springer
ISBN 13 : 9789400756113
Total Pages : 0 pages
Book Rating : 4.7/5 (561 download)

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Book Synopsis Planets, Stars and Stellar Systems by : Gerard Gilmore

Download or read book Planets, Stars and Stellar Systems written by Gerard Gilmore and published by Springer. This book was released on 2013-02-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is volume 5 of Planets, Stars and Stellar Systems, a six-volume compendium of modern astronomical research, covering subjects of key interest to the main fields of contemporary astronomy. This volume on “Galactic Structure and Stellar Populations”, edited by Gerard F. Gilmore, presents accessible review chapters on Stellar Populations, Chemical Abundances as Population Tracers, Metal-Poor Stars and the Chemical Enrichment of the Universe, The Stellar and Sub-Stellar Initial Mass Function of Simple and Composite Populations, The Galactic Nucleus, The Galactic Bulge, Open Clusters and Their Role in the Galaxy, Star Counts and the Nature of Galactic Thick Disk, The Infrared Galaxy, Interstellar PAHs and Dust, Galactic Neutral Hydrogen, High-Velocity Clouds, Magnetic Fields in Galaxies, Astrophysics of Galactic Charged Cosmic Rays, Gamma-Ray Emission of Supernova Remnants and the Origin of Galactic Cosmic Rays, Galactic Distance Scales, Globular Cluster Dynamical Evolution, Dynamics of Disks and Warps, Mass Distribution and Rotation Curve in the Galaxy, Dark Matter in the Galactic Dwarf Spheroidal Satellites, and History of Dark Matter in Galaxies. All chapters of the handbook were written by practicing professionals. They include sufficient background material and references to the current literature to allow readers to learn enough about a specialty within astronomy, astrophysics and cosmology to get started on their own practical research projects. In the spirit of the series Stars and Stellar Systems published by Chicago University Press in the 1960s and 1970s, each chapter of Planets, Stars and Stellar Systems can stand on its own as a fundamental review of its respective sub-discipline, and each volume can be used as a textbook or recommended reference work for advanced undergraduate or postgraduate courses. Advanced students and professional astronomers in their roles as both lecturers and researchers will welcome Planets, Stars and Stellar Systems as a comprehensive and pedagogical reference work on astronomy, astrophysics and cosmology.

Stellar Initial Mass Function

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Publisher :
ISBN 13 : 9782881240874
Total Pages : pages
Book Rating : 4.2/5 (48 download)

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Book Synopsis Stellar Initial Mass Function by : Scalo

Download or read book Stellar Initial Mass Function written by Scalo and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Unravelling the Stellar Initial Mass Function of Early-type Galaxies with Hierarchical Bayesian Modelling

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Publisher :
ISBN 13 : 9789403404646
Total Pages : pages
Book Rating : 4.4/5 (46 download)

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Book Synopsis Unravelling the Stellar Initial Mass Function of Early-type Galaxies with Hierarchical Bayesian Modelling by : Matthijs Dries

Download or read book Unravelling the Stellar Initial Mass Function of Early-type Galaxies with Hierarchical Bayesian Modelling written by Matthijs Dries and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Chemical Evolution of Galaxies

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Publisher : Springer Science & Business Media
ISBN 13 : 3642224911
Total Pages : 237 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Chemical Evolution of Galaxies by : Francesca Matteucci

Download or read book Chemical Evolution of Galaxies written by Francesca Matteucci and published by Springer Science & Business Media. This book was released on 2012-01-05 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term “chemical evolution of galaxies” refers to the evolution of abundances of chemical species in galaxies, which is due to nuclear processes occurring in stars and to gas flows into and out of galaxies. This book deals with the chemical evolution of galaxies of all morphological types (ellipticals, spirals and irregulars) and stresses the importance of the star formation histories in determining the properties of stellar populations in different galaxies. The topic is approached in a didactical and logical manner via galaxy evolution models which are compared with observational results obtained in the last two decades: The reader is given an introduction to the concept of chemical abundances and learns about the main stellar populations in our Galaxy as well as about the classification of galaxy types and their main observables. In the core of the book, the construction and solution of chemical evolution models are discussed in detail, followed by descriptions and interpretations of observations of the chemical evolution of the Milky Way, spheroidal galaxies, irregular galaxies and of cosmic chemical evolution. The aim of this book is to provide an introduction to students as well as to amend our present ideas in research; the book also summarizes the efforts made by authors in the past several years in order to further future research in the field.

Outskirts of Galaxies

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Publisher : Springer
ISBN 13 : 3319565702
Total Pages : 367 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Outskirts of Galaxies by : Johan H. Knapen

Download or read book Outskirts of Galaxies written by Johan H. Knapen and published by Springer. This book was released on 2017-07-09 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of invited reviews written by world-renowned experts on the subject of the outskirts of galaxies, an upcoming field which has been understudied so far. These regions are faint and hard to observe, yet hide a tremendous amount of information on the origin and early evolution of galaxies. They thus allow astronomers to address some of the most topical problems, such as gaseous and satellite accretion, radial migration, and merging. The book is published in conjunction with the celebration of the end of the four-year DAGAL project, an EU-funded initial training network, and with a major international conference on the topic held in March 2016 in Toledo. It thus reflects not only the views of the experts, but also the scientific discussions and progress achieved during the project and the meeting. The reviews in the book describe the most modern observations of the outer regions of our own Galaxy, and of galaxies in the local and high-redshift Universe. They tackle disks, haloes, streams, and accretion as observed through deep imaging and spectroscopy, and guide the reader through the various formation and evolution scenarios for galaxies. The reviews focus on the major open questions in the field, and explore how they can be tackled in the future. This book provides a unique entry point into the field for graduate students and non-specialists, and serves as a reference work for researchers in this exciting new field.

Astronomy with Radioactivities

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Publisher : Springer Science & Business Media
ISBN 13 : 3642126979
Total Pages : 577 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Astronomy with Radioactivities by : Roland Diehl

Download or read book Astronomy with Radioactivities written by Roland Diehl and published by Springer Science & Business Media. This book was released on 2010-10-02 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the reader to the field of nuclear astrophysics, i.e. the acquisition and reading of measurements on unstable isotopes in different parts of the universe. The authors explain the role of radioactivities in astrophysics, discuss specific sources of cosmic isotopes and in which special regions they can be observed. More specifically, the authors address stars of different types, stellar explosions which terminate stellar evolutions, and other explosions triggered by mass transfers and instabilities in binary stars. They also address nuclear reactions and transport processes in interstellar space, in the contexts of cosmic rays and of chemical evolution. A special chapter is dedicated to the solar system which even provides material samples. The book also contains a description of key tools which astrophysicists employ in those particular studies and a glossary of key terms in astronomy with radioactivities.

Galactic Dynamics

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Publisher : Princeton University Press
ISBN 13 : 1400828724
Total Pages : 902 pages
Book Rating : 4.4/5 (8 download)

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Book Synopsis Galactic Dynamics by : James Binney

Download or read book Galactic Dynamics written by James Binney and published by Princeton University Press. This book was released on 2011-10-30 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since it was first published in 1987, Galactic Dynamics has become the most widely used advanced textbook on the structure and dynamics of galaxies and one of the most cited references in astrophysics. Now, in this extensively revised and updated edition, James Binney and Scott Tremaine describe the dramatic recent advances in this subject, making Galactic Dynamics the most authoritative introduction to galactic astrophysics available to advanced undergraduate students, graduate students, and researchers. Every part of the book has been thoroughly overhauled, and many sections have been completely rewritten. Many new topics are covered, including N-body simulation methods, black holes in stellar systems, linear stability and response theory, and galaxy formation in the cosmological context. Binney and Tremaine, two of the world's leading astrophysicists, use the tools of theoretical physics to describe how galaxies and other stellar systems work, succinctly and lucidly explaining theoretical principles and their applications to observational phenomena. They provide readers with an understanding of stellar dynamics at the level needed to reach the frontiers of the subject. This new edition of the classic text is the definitive introduction to the field. ? A complete revision and update of one of the most cited references in astrophysics Provides a comprehensive description of the dynamical structure and evolution of galaxies and other stellar systems Serves as both a graduate textbook and a resource for researchers Includes 20 color illustrations, 205 figures, and more than 200 problems Covers the gravitational N-body problem, hierarchical galaxy formation, galaxy mergers, dark matter, spiral structure, numerical simulations, orbits and chaos, equilibrium and stability of stellar systems, evolution of binary stars and star clusters, and much more Companion volume to Galactic Astronomy, the definitive book on the phenomenology of galaxies and star clusters

Dynamics and Evolution of Hot Gases in Early Type Galaxies

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Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (321 download)

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Book Synopsis Dynamics and Evolution of Hot Gases in Early Type Galaxies by : Michael Loewenstein

Download or read book Dynamics and Evolution of Hot Gases in Early Type Galaxies written by Michael Loewenstein and published by . This book was released on 1986 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Star-Formation Rates of Galaxies

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Publisher : Cambridge University Press
ISBN 13 : 1316877523
Total Pages : 318 pages
Book Rating : 4.3/5 (168 download)

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Book Synopsis Star-Formation Rates of Galaxies by : Andreas Zezas

Download or read book Star-Formation Rates of Galaxies written by Andreas Zezas and published by Cambridge University Press. This book was released on 2021-04-29 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Star-formation is one of the key processes that shape the current state and evolution of galaxies. This volume provides a comprehensive presentation of the different methods used to measure the intensity of recent or on-going star-forming activity in galaxies, discussing their advantages and complications in detail. It includes a thorough overview of the theoretical underpinnings of star-formation rate indicators, including topics such as stellar evolution and stellar spectra, the stellar initial mass function, and the physical conditions in the interstellar medium. The authors bring together in one place detailed and comparative discussions of traditional and new star-formation rate indicators, star-formation rate measurements in different spatial scales, and comparisons of star-formation rate indicators probing different stellar populations, along with the corresponding theoretical background. This is a useful reference for students and researchers working in the field of extragalactic astrophysics and studying star-formation in local and higher-redshift galaxies.

Globular Cluster Systems

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Publisher : Cambridge University Press
ISBN 13 : 0521550572
Total Pages : 183 pages
Book Rating : 4.5/5 (215 download)

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Book Synopsis Globular Cluster Systems by : Keith M. Ashman

Download or read book Globular Cluster Systems written by Keith M. Ashman and published by Cambridge University Press. This book was released on 1998-05-13 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of globular cluster systems - for researchers and graduate students.

Stars and Stellar Processes

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Publisher : Cambridge University Press
ISBN 13 : 1107197880
Total Pages : 573 pages
Book Rating : 4.1/5 (71 download)

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Book Synopsis Stars and Stellar Processes by : Mike Guidry

Download or read book Stars and Stellar Processes written by Mike Guidry and published by Cambridge University Press. This book was released on 2019-02-07 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the physics of stars in relation to modern topics such as neutrino oscillations, supernovae, black holes, and gravitational waves.

Astrophysics in a Nutshell

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Publisher : Princeton University Press
ISBN 13 : 0691164797
Total Pages : 310 pages
Book Rating : 4.6/5 (911 download)

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Book Synopsis Astrophysics in a Nutshell by : Dan Maoz

Download or read book Astrophysics in a Nutshell written by Dan Maoz and published by Princeton University Press. This book was released on 2016-02-23 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ideal one-semester astrophysics introduction for science undergraduates—now expanded and fully updated Winner of the American Astronomical Society's Chambliss Award, Astrophysics in a Nutshell has become the text of choice in astrophysics courses for science majors at top universities in North America and beyond. In this expanded and fully updated second edition, the book gets even better, with a new chapter on extrasolar planets; a greatly expanded chapter on the interstellar medium; fully updated facts and figures on all subjects, from the observed properties of white dwarfs to the latest results from precision cosmology; and additional instructive problem sets. Throughout, the text features the same focused, concise style and emphasis on physics intuition that have made the book a favorite of students and teachers. Written by Dan Maoz, a leading active researcher, and designed for advanced undergraduate science majors, Astrophysics in a Nutshell is a brief but thorough introduction to the observational data and theoretical concepts underlying modern astronomy. Generously illustrated, it covers the essentials of modern astrophysics, emphasizing the common physical principles that govern astronomical phenomena, and the interplay between theory and observation, while also introducing subjects at the forefront of modern research, including black holes, dark matter, dark energy, and gravitational lensing. In addition to serving as a course textbook, Astrophysics in a Nutshell is an ideal review for a qualifying exam and a handy reference for teachers and researchers. The most concise and current astrophysics textbook for science majors—now expanded and fully updated with the latest research results Contains a broad and well-balanced selection of traditional and current topics Uses simple, short, and clear derivations of physical results Trains students in the essential skills of order-of-magnitude analysis Features a new chapter on extrasolar planets, including discovery techniques Includes new and expanded sections and problems on the physics of shocks, supernova remnants, cosmic-ray acceleration, white dwarf properties, baryon acoustic oscillations, and more Contains instructive problem sets at the end of each chapter Solutions manual (available only to professors)

Galaxy Formation and Evolution

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Publisher : Cambridge University Press
ISBN 13 : 0521857937
Total Pages : 841 pages
Book Rating : 4.5/5 (218 download)

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Book Synopsis Galaxy Formation and Evolution by : Houjun Mo

Download or read book Galaxy Formation and Evolution written by Houjun Mo and published by Cambridge University Press. This book was released on 2010-05-20 with total page 841 pages. Available in PDF, EPUB and Kindle. Book excerpt: A coherent introduction for researchers in astronomy, particle physics, and cosmology on the formation and evolution of galaxies.