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Curvature of galaxy brightness profiles

Published online by Cambridge University Press:  29 March 2021

Geferson Lucatelli Open the ORCID record for Geferson Lucatelli [Opens in a new window] ,
Fabricio Ferrari ,
Arianna Cortesi ,
Ana L. Chies-Santos ,
Fernanda Roman de Oliveira Open the ORCID record for Fernanda Roman de Oliveira [Opens in a new window] ,
Claudia Mendes de Oliveira  and
Lilianne M. Izuti Nakazono Open the ORCID record for Lilianne M. Izuti Nakazono [Opens in a new window]
Geferson Lucatelli
Affiliation:
Institudo de Matemática, Estatística e Física, Universidade Federal do Rio Grande, Rio Grande-RS, Brasil email: [email protected]
Fabricio Ferrari
Affiliation:
Institudo de Matemática, Estatística e Física, Universidade Federal do Rio Grande, Rio Grande-RS, Brasil email: [email protected]
Arianna Cortesi
Affiliation:
Observatório do Valongo, Universidade Federal do Rio de Janeiro, Rio de Janeiro-RJ, Brasil
Ana L. Chies-Santos
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre-RS, Brasil
Fernanda Roman de Oliveira
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre-RS, Brasil
Claudia Mendes de Oliveira
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo-SP, Brasil
Lilianne M. Izuti Nakazono
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo-SP, Brasil
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Abstract

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Galaxy morphologies reflect the shapes of galaxies and their structural components, such as bulges, discs, bars, spiral arms, etc. The detailed knowledge of the morphology of a galaxy provides understanding of the physics behind its evolution, since the time of its formation, including interaction processes and influence of the environment. Thus, the more precisely we can describe a galaxy structure, the more we may understand about its formation and evolution. We present a method that measures curvature, using images, to describe galaxy structure and to infer the morphology of each component of a galaxy. We also include some preliminary results of curvature measurements for galaxies of the Southern Photometric Local Universe Survey (S-PLUS) DR1 data release and for jellyfish galaxies of the Omega Survey. We find that the median of the curvature parameter and the integrated area under the curvature give us clues on the morphology of a galaxy.

Keywords

galaxies:structuregalaxies:morphologygalaxies:morphometrydifferential geometry: curvature
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 444 - 445
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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