Sersic Profile
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.The Sérsic profile (or Sérsic model or Sérsic''s law) is a mathematical function that describes how the intensity I of a galaxy varies with distance R from its center. It is a generalization of de Vaucouleurs'' law. J. L. Sérsic first published his law in 1963. The brightest elliptical galaxies often have low-density cores that are not well described by Sérsic''s law. The "core-Sérsic" family of models was introduced by A. Graham et al. and Trujillo et al. and further…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.The Sérsic profile (or Sérsic model or Sérsic''s law) is a mathematical function that describes how the intensity I of a galaxy varies with distance R from its center. It is a generalization of de Vaucouleurs'' law. J. L. Sérsic first published his law in 1963. The brightest elliptical galaxies often have low-density cores that are not well described by Sérsic''s law. The "core-Sérsic" family of models was introduced by A. Graham et al. and Trujillo et al. and further developed by B. Terzi and A. Graham in 2005 to describe such galaxies. Core-Sérsic models have an additional set of parameters that describe the core radius and core density. Dwarf elliptical galaxies sometimes have pointlike nuclei that are also not well described by Sérsic''s law. These galaxies are often fit by a Sérsic model with an added central component representing the nucleus.