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Effects of mergers on non-parametric morphologies

Published online by Cambridge University Press:  30 May 2017

Lucas A. Bignone ,
Patricia B. Tissera ,
Emanuel Sillero ,
Susana E. Pedrosa ,
Leonardo J. Pellizza  and
Diego G. Lambas
Lucas A. Bignone
Affiliation:
Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), C.C. 67 Suc. 28, C1428ZAA Ciudad de Buenos Aires, Argentina
Patricia B. Tissera
Affiliation:
Departamento de Ciencias Físicas, Universidad Andres Bello, Av. Republica 220, Santiago, Chile Millennium Institute of Astrophysics, Av. Republica 220, Santiago, Chile
Emanuel Sillero
Affiliation:
Instituto de Astronomia Teórica y Experimental (CONICET-UNC), Laprida 925, Cordoba, Argentina
Susana E. Pedrosa
Affiliation:
Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), C.C. 67 Suc. 28, C1428ZAA Ciudad de Buenos Aires, Argentina
Leonardo J. Pellizza
Affiliation:
Instituto Argentino de Radioastronomía, CONICET, Camino Gral. Belgrano km 40, Berazategui, Prov. de Buenos Aires, Argentina
Diego G. Lambas
Affiliation:
Instituto de Astronomia Teórica y Experimental (CONICET-UNC), Laprida 925, Cordoba, Argentina
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Abstract

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We study the effects of mergers on non-parametric morphologies of galaxies. We compute the Gini index, M20, asymmetry and concentration statistics for z = 0 galaxies in the Illustris simulation and compare non-parametric morphologies of major mergers, minor merges, close pairs, distant pairs and unperturbed galaxies. We determine the effectiveness of observational methods based on these statistics to select merging galaxies.

Keywords

galaxies: formationgalaxies: interactionsmethods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S325: Astroinformatics , October 2016 , pp. 51 - 54
Copyright
Copyright © International Astronomical Union 2017 

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