Download or read book Internal Kinematics and Stellar Populations of Dwarf Early type Galaxies in the Coma Cluster written by Ana Matković and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: In this dissertation, we characterize the dwarf early-type galaxies (dE/dS0s) in the Coma cluster based on their internal kinematics (velocity dispersion [sigma]) and properties of their underlying stellar populations. We derive scaling relations of dEs including the luminosity--velocity dispersion (L- [sigma] the Faber-Jackson relation), color--[sigma], line strength index--[sigma], age-metallicity, and relations between age, metallicity and [alpha/Fe] with velocity dispersion. We also assess how these relations are affected by cluster environment. Our galaxy sample consists of 74 early-type galaxies in the 30 [arcmin] diameter region in the center of the Coma cluster and 48 early-type galaxies in a 1 degree region centered around NGC 4839, a region believed to be infalling into the cluster. We measure velocity dispersions and line strength indices for these galaxies.
Download or read book Kinematics and Stellar Populations of Early type Dwarf Galaxies in the Virgo Cluster written by Bahar Bidaran and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Kinematics and Stellar Populations of Early type Galaxies in the Fornax Cluster written by Bettina V. Gerken and published by . This book was released on 2008 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Kinematics and Stellar Populations of Early type Galaxies in the Fornax Cluster written by Bettina V. Gerken and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Kinematics of Dwarf Spheroidal Galaxies written by Matthew G. Walker and published by . This book was released on 2007 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stellar Populations in Early type Coma Cluster Galaxies written by Stephen Anthony William Moore and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Dynamics Structure and Formation of Dwarf Elliptical Galaxies written by Marla Geha and published by . This book was released on 2003 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stellar populations as building blocks of galaxies proceedings of the 241th symposium of the International Astronomical Union held in La Palma Tenerife Spain December 10 16 2006 written by International Astronomical Union. Symposium and published by Cambridge University Press. This book was released on 2007 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinematics and Stellar Populations of Dwarf Elliptical Galaxies written by Jacobus Johannes Mentz and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early type Dwarf Galaxies written by Sanjaya Paudel and published by . This book was released on 2011 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dwarf Spheroidal Galaxies written by Ugur Ural and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dwarf Spheroidal galaxies (dSphs) are the nearest and the most dark matter dominated galaxies in the Universe. In this thesis, we study their kinematics and dynamics using Monte Carlo methods. First, we study the kinematics of stellar subpopulations in dwarf spheroidal galaxies and present a robust Monte Carlo based method for interpretation of the sub-population data in dSphs. We apply the mehod to new spectroscopic data for twenty six stars in the recently-discovered Canes Venatici I (CVn I) dSph, obtained with the GMOS-N spectroscope on the Gemini North telescope. We use these data to investigate the recent claim of the presence of two dynamically different stellar populations in this system (Ibata et al., 2006). While we find no evidence for kinematically distinct sub-populations in our sample, we also show that the available kinematic data sets in CVn I might be too small to draw robust conclusions about its sub-populations. Second, we introduce a Markov Chain Monte Carlo based method for studying the dynamics of dSphs. We perform a large number of N-body simulations of the Carina dSph, modelling it with different dark matter halo profiles in the presence of tidal interactions. We show that due to the uncertainties in the data, it is possible to find several good models that can match Carina?s observed data. We show the differences in the mass, density, compactness and orbital eccentricities that result from different split power halo profiles, as well as mass follows light models. Finally, using high resolution re-simulations of some of our best models, we show the robustness of our results and perform a more detailed analysis of the models, looking at their mass evolution, and general tidal signatures that should be looked for in future observations.
Download or read book Late type Spiral Galaxies written by Katia Ganda and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Probing Stellar Populations Out to the Distant Universe written by L. A. Antonelli and published by American Institute of Physics. This book was released on 2009-05-26 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cefalu, Sicily, Italy, 7-19 September 2008
Download or read book New Vision Of An Old Cluster A Untangling Coma Berenices written by Alain Mazure and published by World Scientific. This book was released on 1998-08-15 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Together with Virgo, the Coma Berenices cluster is one of the most well-studied clusters at all wavelengths and in all aspects, from the Sunyaev-Zeldovich effect to star formation in galaxies. In a way, it is the prototype of rich clusters. Recent observational results, linked to the improvement of techniques such as X-ray and UV observations, along with multi-object spectroscopy, have shown that they could change our vision of this cluster. It is thus time for observers and theoreticians to confront all these new ideas and observations on the Coma cluster.The topics in this volume include: cosmological aspects of the Coma cluster, comparison with distant clusters; substructures; matter content and distribution; Sunyaev-Zeldovich effect; dynamical modelling, cluster dynamics; environmental effects on galaxies, star formation.
Download or read book Star forming Dwarf Galaxies and Related Objects written by D. Kunth and published by Atlantica Séguier Frontières. This book was released on 1985 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early type Stellar Systems in Nearby Galaxy Clusters written by Ingo Misgeld and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2009 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
