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Simulations of the formation and evolution of dwarf galaxies

Sander Valcke (UGent) , Sven De Rijcke (UGent) and Herwig Dejonghe (UGent)
(2009) Astronomische Nachrichten. 330. p.972-977
Author
Organization
Abstract
Abstract We present models of the formation and evolution of isolated dwarf galaxies. The models follow the evolution of an initially homogeneous gas cloud collapsing in a pre-existing dark-matter halo. These simplified initial conditions are supported by the merger trees of isolated dwarf galaxies extracted from the milli-Millennium Simulation. An extensive comparison of the models to observations was made. The models' surface brightness profiles are well fitted by Sérsic profiles and the correlations between the models' Sérsic parameters and luminosity agree with the observations. We have also compared model predictions for the half-light radius R_{e} , central velocity dispersion σ\rs{c}, broad band colour B-V, metallicity [Z/Z\sun] versus luminosity relations and for the location relative to the fundamental plane with the available data. In all cases the models give the correct slope, in most cases we also get the zero-point right.
Keywords
galaxies: dwarf, galaxies: formation, galaxies: evolution, methods: N-body simulations

Citation

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Chicago
Valcke, Sander, Sven De Rijcke, and Herwig Dejonghe. 2009. “Simulations of the Formation and Evolution of Dwarf Galaxies.” Astronomische Nachrichten 330: 972–977.
APA
Valcke, Sander, De Rijcke, S., & Dejonghe, H. (2009). Simulations of the formation and evolution of dwarf galaxies. Astronomische Nachrichten, 330, 972–977. Presented at the Symposium on Matter Cycles of Galaxies in Clusters held at the JENAM 2008 Meeting.
Vancouver
1.
Valcke S, De Rijcke S, Dejonghe H. Simulations of the formation and evolution of dwarf galaxies. Astronomische Nachrichten. 2009;330:972–7.
MLA
Valcke, Sander, Sven De Rijcke, and Herwig Dejonghe. “Simulations of the Formation and Evolution of Dwarf Galaxies.” Astronomische Nachrichten 330 (2009): 972–977. Print.
@article{954415,
  abstract     = {Abstract
We present models of the formation and evolution of isolated dwarf galaxies. The models follow the evolution of an initially homogeneous gas cloud collapsing in a pre-existing dark-matter halo. These simplified initial conditions are supported by the merger trees of isolated dwarf galaxies extracted from the milli-Millennium Simulation. An extensive comparison of the models to observations was made. The models' surface brightness profiles are well fitted by S{\'e}rsic profiles and the correlations between the models' S{\'e}rsic parameters and luminosity agree with the observations. We have also compared model predictions for the half-light radius R\_\{e\} , central velocity dispersion \ensuremath{\sigma}{\textbackslash}rs\{c\}, broad band colour B-V, metallicity [Z/Z{\textbackslash}sun] versus luminosity relations and for the location relative to the fundamental plane with the available data. In all cases the models give the correct slope, in most cases we also get the zero-point right.},
  author       = {Valcke, Sander and De Rijcke, Sven and Dejonghe, Herwig},
  issn         = {0004-6337},
  journal      = {Astronomische Nachrichten},
  language     = {eng},
  location     = {Vienna, AUSTRIA},
  pages        = {972--977},
  title        = {Simulations of the formation and evolution of dwarf galaxies},
  url          = {http://dx.doi.org/10.1002/asna.200911255},
  volume       = {330},
  year         = {2009},
}

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