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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        <foaf:name>Casura, Sarah</foaf:name>
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        <foaf:name>Liske, Jochen</foaf:name>
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        <foaf:name>Robotham, Aaron S. G.</foaf:name>
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        <foaf:name>Taranu, Dan S.</foaf:name>
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        <foaf:name>Laine, Jarkko</foaf:name>
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    <dct:title>Galaxy And Mass Assembly (GAMA): Bulge-disk decomposition of KiDS and VIKING data in the nearby universe</dct:title>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2019</dct:issued>
    <dcat:keyword>galaxies: structure</dcat:keyword>
    <dcat:keyword>galaxies: fundamental parameters</dcat:keyword>
    <dcat:keyword>dust, extinction</dcat:keyword>
    <dcat:keyword>catalogues</dcat:keyword>
    <dcat:keyword>methods: statistical</dcat:keyword>
    <dcat:keyword>techniques: photometric</dcat:keyword>
    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2019-11-18</dct:issued>
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    <dct:description>&lt;p&gt;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.&lt;/p&gt;</dct:description>
    <dct:description xml:lang="">{"references": ["Robotham A. S. G. et al., 2017, MNRAS, 466, 1513", "Robotham A. S. G. et al., 2018, MNRAS, 476, 3137", "Popescu C. C. et al., 2011, A&amp;A, 527, A109 and preceding publications of this series", "Driver, S. P. et al., 2007, MNRAS, 379, 1022", "Galaxy And Mass Assembly (GAMA): http://www.gama-survey.org/", "Kilo-Degree Survey (KiDS): http://kids.strw.leidenuniv.nl/", "VISTA Kilo-Degree Infrared Galaxy Survey (VIKING): http://www.eso.org/sci/observing/PublicSurveys/sciencePublicSurveys.html#vistacycle1"]}</dct:description>
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