Wide Field Study of the Globular Cluster Systems in the Elliptical Galaxies NGC 4365 and NGC 4697

Wide Field Study of the Globular Cluster Systems in the Elliptical Galaxies NGC 4365 and NGC 4697 PDF Author: Mauricio Andrés Ortiz Alvarez
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Wide Field Study of the Globular Cluster Systems in the Elliptical Galaxies NGC 4365 and NGC 4697

Wide Field Study of the Globular Cluster Systems in the Elliptical Galaxies NGC 4365 and NGC 4697 PDF Author: Mauricio Andrés Ortiz Alvarez
Publisher:
ISBN:
Category :
Languages : en
Pages :

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A Study of Globular Cluster Systems in the Shapley Supercluster Region with the Hubble Space Telescope

A Study of Globular Cluster Systems in the Shapley Supercluster Region with the Hubble Space Telescope PDF Author: Regina Grace Barber DeGraaff
Publisher:
ISBN:
Category : Stars
Languages : en
Pages : 240

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A Wide-field Survey of the Globular Cluster Systems of Elliptical and Spiral Galaxies

A Wide-field Survey of the Globular Cluster Systems of Elliptical and Spiral Galaxies PDF Author: Katherine Louise Rhode
Publisher:
ISBN:
Category : Elliptical galaxies
Languages : en
Pages : 390

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Globular Clusters - Guides to Galaxies

Globular Clusters - Guides to Galaxies PDF Author: Tom Richtler
Publisher: Springer Science & Business Media
ISBN: 3540769617
Category : Science
Languages : en
Pages : 448

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Book Description
The principal question of whether and how globular clusters can contribute to a better understanding of galaxy formation and evolution is perhaps the main driving force behind the overall endeavour of studying globular cluster systems. Naturally, this splits up into many individual problems. The objective of the Joint ESO-FONDAP Workshop on Globular Clusters - Guides to Galaxies was to bring together researchers, both observational and theoretical, to present and discuss the most recent results. Topics covered in these proceedings are: internal dynamics of globular clusters and interaction with host galaxies (tidal tails, evolution of cluster masses), accretion of globular clusters, detailed descriptions of nearby cluster systems, ultracompact dwarfs, formations of massive clusters in mergers and elsewhere, the ACS Virgo survey, galaxy formation and globular clusters, dynamics and kinematics of globular cluster systems and dark matter-related problems. With its wide coverage of the topic, this book constitutes a valuable reference of the scientific knowledge of the field.

Globular Cluster Systems

Globular Cluster Systems PDF Author: Keith M. Ashman
Publisher: Cambridge University Press
ISBN: 0521550572
Category : Science
Languages : en
Pages : 183

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A comprehensive review of globular cluster systems - for researchers and graduate students.

Extragalactic Globular Cluster Systems

Extragalactic Globular Cluster Systems PDF Author: Markus Kissler-Patig
Publisher: Springer Science & Business Media
ISBN: 9783540404729
Category : Science
Languages : en
Pages : 382

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Book Description
Dramatic progress is a trademark of the recent study of globular cluster systems. Considerations about the formation and evolution compose the first chapter, followed by a chapter on young star clusters. Then come four chapters reviewing the globular cluster system of early-type, late-type and dwarf galaxies, as well as of groups of galaxies. One chapter is dedicated to stellar population models and their applications to the field. Finally a chapter reviews the kinematics of galaxies derived from globular cluster systems and another their role in the context of galaxy formation and evolution studies. As a whole, the book gives an up-to-date view of the field at the beginning of the new decade, which will without doubt again bring significant progress in our understanding of globular cluster systems and galaxy formation and evolution.

The Photometric Properties of Extragalactic Globular Cluster Systems

The Photometric Properties of Extragalactic Globular Cluster Systems PDF Author: Zachary Grove Jennings
Publisher:
ISBN: 9780355131499
Category :
Languages : en
Pages : 272

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Globular Clusters (GCs) are powerful tools for understanding the formation of galaxies. GCs are located in the halos of galaxies and, due to their age and density, have borne witness to the major formation events of a galaxy's lifetime. One may study these objects using a wide array of techniques and datasets, including wide-field ground-based imaging, deep space-based imaging, and spectroscopy. All approaches involve tradeoffs, and in this work we consider a variety of ways to study GC systems in imaging data. We examine a wide-field HST/ACS mosaic of the nearby lenticular galaxy NGC 3115, selecting a high-quality GC sample using the superior resolution of the ACS data. We find strong color bimodality in the GC system of NGC 3115 and examine a number of trends in the properties of the GC system. Next, we consider the situation where one is limited to ground-based imaging, where contaminants to the GC population are a major concern. We detail a novel statistical methodology in which we treat the GC population and the contaminant population as a mixture model, and evaluate the model in a Bayesian context. We demonstrate the performance of the model on mock data, and note some areas where current analysis of GC systems may be missing information using traditional selection techniques. We also apply this Bayesian methodology to a subset of SLUGGS survey galaxies with high-quality photometry from either the MegaCam instrument on the Canada France-Hawaii Telescope or the SuprimeCam instrument on the Subaru Telescope. In most cases, the mixture model recovers the GC system well, often finding the traditional bimodality and providing well-calibrated statistical uncertainties for the global parameters of the GC system. Finally, we examine the object NGC 3628 UCD1, a star cluster slightly more massive than the largest GCs. We identify that UCD1 is located in a stellar stream around the galaxy NGC 3628, and therefore is in the process of being accreted. We characterize UCD1 both in wide-field SuprimeCam imaging and in Keck/ESI spectroscopy, and identify a number of interesting parallels between UCD1 and omegaCen, the largest Milky Way GC.

Star Clusters

Star Clusters PDF Author: B.W. Carney
Publisher: Springer Science & Business Media
ISBN: 3540316345
Category : Science
Languages : en
Pages : 429

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Book Description
Star clusters are at the heart of astronomy, being key objects for our understanding of stellar evolution and galactic structure. Observations with the Hubble Space Telescope and other modern equipment have revealed fascinating new facts about these galactic building blocks. This book provides two comprehensive and up-to-date, pedagogically designed reviews on star clusters by two well-known experts in the field. Bruce Carney presents our current knowledge of the relative and absolute ages of globular clusters and the chemical history of our Galaxy. Bill Harris addresses globular clusters in external galaxies and their use as tracers of galaxy formation and cosmic distance indicators. The book is written for graduate students as well as professionals in astronomy and astrophysics.

The Harlow-Shapley Symposium on Globular Cluster Systems in Galaxies

The Harlow-Shapley Symposium on Globular Cluster Systems in Galaxies PDF Author: Jonathan E. Grindlay
Publisher: Springer Science & Business Media
ISBN: 9401511047
Category : Science
Languages : en
Pages : 767

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Book Description
In the centennial year, 1985-86, of Harlow Shapley's birth, the study of globular clusters was no less important to the development of astronomy than in 1915, when Shapley first noted their concentration on the sky. By 1917 Shapley had used the properties of the system of globular clusters to complete the Copernican revolution and locate the solar system, and its Earth-bound observers, far from the center of the Galaxy and the globular cluster distribution. Seven decades later, in the year of these proceedings, globular cluster research and the study of the system of globular clusters in our own and distant galaxies is undergoing a renaissance of activity. The introduction of new observational tools, particularly CCD imagers and digital spectrographs, as well as powerful theoretical methods have transformed the study of globular clusters into one of the main line areas of modern astrophysics. Thus it seemed particularly appropriate to one of us, when considering how the Harvard College Observatory might mark the Shapley centennial, to propose and plan for an IAU Symposium on Globular Cluster Systems in Galaxies. Planning for the Shapley Symposium, as it came to be called, was even more drawn out than the preparation of this volume. The Symposium was originally proposed to the IAU Secretariat in time for it to be held in August, 1985, so that it might occur in the centennial (calendar) year.

Dynamical studies of the globular cluster systems around the giant elliptical galaxies NGC4636 and NGC1399

Dynamical studies of the globular cluster systems around the giant elliptical galaxies NGC4636 and NGC1399 PDF Author: Ylva Schuberth
Publisher:
ISBN:
Category :
Languages : de
Pages : 289

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