WorldCat Identities

Ashman, Keith M. 1963-

Overview
Works: 13 works in 49 publications in 4 languages and 1,997 library holdings
Genres: Academic theses 
Roles: Author, Thesis advisor, Editor
Publication Timeline
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Most widely held works by Keith M Ashman
After the science wars by Keith M Ashman( )

17 editions published between 2000 and 2001 in English and German and held by 1,702 WorldCat member libraries worldwide

The ""War"" in science is largely the discussion between those who believe that science is above criticism and those who do not. After the Science Wars is a collection of essays by leading philosophers and scientists, all attempting to bridge interdisciplinary gulfs in this discussion
Globular cluster systems by Keith M Ashman( Book )

14 editions published between 1998 and 2008 in English and held by 266 WorldCat member libraries worldwide

A comprehensive review of globular cluster systems - for researchers and graduate students
Cambridge Astrophysics, 30 by Keith M Ashman( )

1 edition published in 1998 in English and held by 9 WorldCat member libraries worldwide

The low metallicity globular clusters by Craig Eugene Masters( )

3 editions published between 2005 and 2006 in English and held by 5 WorldCat member libraries worldwide

The question of where the low metallicity globular clusters in early-type galaxies came from has profound implications for how these galaxies form. In this thesis it is proposed that the low metallicity globular clusters in massive early type galaxies formed in dwarf galaxies that have been subsumed by their more massive counterparts. It is shown that correlations between the metallicity of metal-poor clusters and the properties of the galaxies in which they are found contradict claims in the literature that these globular clusters form in situ. Instead, the analysis of this thesis indicates that all metal-poor globular clusters form in dwarf galaxies
Mixture modeling analysis of bimodal globular cluster color distributions by Blake Allen Miller( )

3 editions published between 2006 and 2007 in English and held by 4 WorldCat member libraries worldwide

Globular clusters are dense collections of stars which are abundant in bright galaxies. They are formed during periods of intense star formation and therefore contain information about the galactic conditions at that time. Within many galaxies these clusters have been observed to be divided into two group along a color distribution, thus leading to the conclusion that there were two major star forming events in these galaxies. Considerable globular cluster system research is predicated on the KMM algorithm which was developed to detect this bimodal color distribution. This algorithm is more adept at detecting bimodality then classifying the parameters of the two populations of clusters. The emphasis of this thesis is the evaluation of a new statistical algorithm, EMMIX. This new algorithm is compared to KMM and used to provide better fits for the color distributions while maximizing the retrieval of the information the data contains
The formation of low metallicity globular clusters by Craig Eugene Masters( )

3 editions published in 2007 in English and held by 4 WorldCat member libraries worldwide

The question of where the low metallicity globular clusters in early-type galaxies came from has profound implications as to how those galaxies formed. Evidence is presented that these globular clusters formed within dwarf galaxies that have been subsumed by their more massive counterparts. One of the difficulties with this idea is that the pressures of the interstellar media of dwarfs are not expected to be high enough to produce dense, bound star clusters. Therefore, this work has been extended to examine in more detail how the low metallicity clusters formed in dwarfs. It has been found that an increase in gas pressure from supernovae can produce dense star clusters and that this is consistent with the amount of chemical enrichment in the remaining interstellar gas associated with such supernovae. Additionally, the subsumation scenerio [i.e. scenario] presented in this thesis suggests a theoretical reason for the decrease in the density and metallicity of globular clusters with increasing galactocentric distance in the Milky Way and other galaxies
A study of the viability of the dissipationless hierarchical clustering model of galaxy formation by Timothy M Walker( )

2 editions published in 2008 in English and held by 3 WorldCat member libraries worldwide

Globular cluster systems of many elliptical exhibit color bimodality. The model of galactic formation we examine proposes that this color bimodality is the result of dissipationless hierarchical clustering. Our primary goal in this study is to establish the likelihood such a model produces color distributions like those seen in astronomical observations. A large computer program was written in FORTRAN to do Monte Carlo simulations of galactic formation on a high speed computer. We confirm the findings of previous authors that this model can produce bimodal color distributions, like those observed in the heavens. However, we find the frequency of bimodal distributions produced is low. We conclude this is not a viable model for the origin of the majority of globular cluster systems in elliptical galaxies
Discovering astronomy by R. Robert Robbins( Book )

1 edition published in 2006 in English and held by 1 WorldCat member library worldwide

From the Back Cover: What was the big bang? How did the universe evolve? What is gravity and why does it exist? These are just some of the questions that are discussed in Discovering Astronomy, Fifth Edition. This totally new edition is designed for the introductory astronomy course at the college level. Filled with relevant history as well as the latest theories and techniques, Discovering Astronomy makes the learning process fun and exciting yet challenging and productive
Cumulos globulares jovenes by Stephen E Zepf( )

1 edition published in 2003 in Spanish and held by 1 WorldCat member library worldwide

Zagadkowe gromady kuliste by Stephen E Zepf( )

1 edition published in 2003 in Polish and held by 1 WorldCat member library worldwide

The unexpected youth of globular clusters by Stephen E Zepf( Book )

1 edition published in 2003 in Undetermined and held by 1 WorldCat member library worldwide

Pregalactic cooling flows and baryonic dark matter by Keith M Ashman( )

1 edition published in 1989 in English and held by 0 WorldCat member libraries worldwide

Regulation of intracellular calcium by a signalling complex of irag, ip3 receptor and cgmp kinase by Aldo Ammendola( )

1 edition published in 2000 in English and held by 0 WorldCat member libraries worldwide

 
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After the science wars
Covers
Globular cluster systems
Alternative Names
Ashman, Keith Martin

Keith M. Ashman British theoretical astrophysicist

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