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Structural decomposition of galaxies in the CALIFA survey

Published online by Cambridge University Press:  12 October 2016

Teet Kuutma ,
Antti Tamm  and
Elmo Tempel
Teet Kuutma
Affiliation:
Tartu Observatory, Observatooriumi 1, 61602 Tõravere, Estonia Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
Antti Tamm
Affiliation:
Tartu Observatory, Observatooriumi 1, 61602 Tõravere, Estonia
Elmo Tempel
Affiliation:
Tartu Observatory, Observatooriumi 1, 61602 Tõravere, Estonia
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Abstract

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Several clues for understanding the nature and evolution of galaxies can be gained by studying galactic structures and their evolution with time and environment. However, even for nearby galaxies, detailed structural decomposition is not a straightforward task. Choosing the number of structural components and the limits placed on their parameters can have a large effect on the derived characteristics of galaxies. For distant galaxies, structural analysis is further hampered by the spatial resolution limits of the imaging. However, by using a relatively robust two-component bulge+disk modelling, galaxies in the nearby Universe can be compared to distant galaxies for tracing signs of evolution in the extracted structures. We start such a study by analysing first a well observed nearby sample of galaxies, using ∼600 targets from the CALIFA survey. We show that even in this small sample of nearby galaxies, the effects of environmental density are already well apparent.

Keywords

galaxies: photometrygalaxies: structuregalaxies: spiralgalaxies: elliptical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S308: The Zeldovich Universe: Genesis and Growth of the Cosmic Web , June 2014 , pp. 467 - 468
Copyright
Copyright © International Astronomical Union 2016 

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