Poster Open Access

Galaxy And Mass Assembly (GAMA): Bulge-disk decomposition of KiDS and VIKING data in the nearby universe

Casura, Sarah; Liske, Jochen; Robotham, Aaron S. G.; Taranu, Dan S.; Laine, Jarkko

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<oai_dc:dc xmlns:dc="" xmlns:oai_dc="" xmlns:xsi="" xsi:schemaLocation="">
  <dc:creator>Casura, Sarah</dc:creator>
  <dc:creator>Liske, Jochen</dc:creator>
  <dc:creator>Robotham, Aaron S. G.</dc:creator>
  <dc:creator>Taranu, Dan S.</dc:creator>
  <dc:creator>Laine, Jarkko</dc:creator>
  <dc:description>Obtaining reliable structural parameters for the different components of galaxies is important for a wide variety of studies of galaxy properties and evolution. I will present our current work on the bulge-disk decomposition of approximately 13000 GAMA galaxies in the nearby universe (z smaller than 0.08) in all 9 optical and near-infrared bands covered by KiDS and VIKING. The galaxy profiling itself uses the 2-dimensional Bayesian profile fitting code ProFit (Robotham et al. 2016) while the preparatory work (image segmentation/source identification, sky subtraction, initial parameter estimates) is carried out using the sister package ProFound (Robotham et al. 2018). The local PSF is estimated using a combination of ProFound and ProFit to identify stars near the galaxy of interest and fit them with a Moffat function. These decompositions will be used to derive the stellar mass functions of bulges and disks and study the nature and distribution of dust in galaxy disks.</dc:description>
  <dc:subject>galaxies: structure</dc:subject>
  <dc:subject>galaxies: fundamental parameters</dc:subject>
  <dc:subject>dust, extinction</dc:subject>
  <dc:subject>methods: statistical</dc:subject>
  <dc:subject>techniques: photometric</dc:subject>
  <dc:title>Galaxy And Mass Assembly (GAMA): Bulge-disk decomposition of KiDS and VIKING data in the nearby universe</dc:title>
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