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A 3D analysis of the metal distribution in the compact group of galaxies HCG 31

Published online by Cambridge University Press:  09 February 2015

Sergio Torres-Flores ,
Claudia Mendes de Oliveira ,
Mayte Alfaro-Cuello ,
Eleazar Rodrigo Carrasco ,
Duilia de Mello  and
Philippe Amram
Sergio Torres-Flores
Affiliation:
Departamento de Física, Universidad de La Serena, Av. Cisternas 1200 Norte, La Serena, Chile email: [email protected]
Claudia Mendes de Oliveira
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas da Universidade de São Paulo, Cidade Universitária, CEP:05508-900, São Paulo, SP, Brazil
Mayte Alfaro-Cuello
Affiliation:
Departamento de Física, Universidad de La Serena, Av. Cisternas 1200 Norte, La Serena, Chile email: [email protected]
Eleazar Rodrigo Carrasco
Affiliation:
Gemini Observatory/AURA, Southern Operations Center, Casilla 603, La Serena, Chile
Duilia de Mello
Affiliation:
Catholic University of America, Washington, DC 20064, USA
Philippe Amram
Affiliation:
Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, 13388, Marseille, France
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Abstract

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We present new Gemini/GMOS integral field unit observations of the central region of the merging compact group of galaxies HCG 31. Using this data set, we derive the oxygen abundances for the merging galaxies HCG 31A and HCG 31C. We found a smooth metallicity gradient between the nuclei of these galaxies, suggesting a mixing of metals between these objects. These results are confirmed by high-resolution Fabry-Perot data, from which we infer that gas is flowing between HCG 31A and HCG 31C.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S309: Galaxies in 3D across the Universe , July 2014 , pp. 363
Copyright
Copyright © International Astronomical Union 2015 

References

Amram, P., Mendes de Oliveira, C., Plana, H., et al. 2007, A&A, 471, 753Google Scholar
Marino, R. A., Rosales-Ortega, F. F., Sánchez, S. F., et al. 2013, A&A, 559A, 114Google Scholar