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Properties of Dwarf Galaxies in Fornax

Hutten, M.J. (2017) Properties of Dwarf Galaxies in Fornax. Master's Thesis / Essay, Astronomy.

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We investigate the properties of a sample of 28 dwarf galaxies taken from the Fornax Cluster Catalog (Ferguson, 1989) using data from the Fornax Deep Survey (FDS), obtained with the optical ESO VLT Survey Telescope (VST) in SDSS bands u’, g’, r’ and i’. We use Galfit (Peng et al., 2010) for galaxy modeling and use aperture photometry to determine central magnitudes. We find that the luminosity-size relation and the magnitude-surface brightness relations are well approximated by an exponential and linear fit, with log(re) ∝ −0.10 M(g) and <μ>e,g ∝ 0.48 M(g). We find an average nucleation fraction of ∼ 39% while ∼ 25% are found nucleated in all four bands, in good agreement with similar studies. We cannot statistically reliably measure the color difference between the central parts of the galaxy and the galaxy as a whole. Finally, we reproduce a linear relation of Sersic index (n) with luminosity as n(g) ∝ −0.15 m(g) which confirms the increase of n for brighter systems, and find evidence of a non-linear or non-continuous relation across larger magnitude ranges.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Astronomy
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 08:27
Last Modified: 15 Feb 2018 08:27

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