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Diving deeper into jellyfish: The rich population of jellyfish galaxies in Abell 901/2

Published online by Cambridge University Press:  04 June 2020

Fernanda Roman-Oliveira Open the ORCID record for Fernanda Roman-Oliveira [Opens in a new window] ,
Ana Chies-Santos  and
Fabrício Ferrari
Fernanda Roman-Oliveira
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil email: fernanda.oliveira@ufrgs.br
Ana Chies-Santos
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil email: fernanda.oliveira@ufrgs.br
Fabrício Ferrari
Affiliation:
Instituto de Matemática, Estatística e Física, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
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Abstract

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Jellyfish galaxies are the most extreme examples of ram pressure stripping (RPS). They represent an important path in the morphological change and quenching in galaxy clusters, however they are still not well characterised morphologically and finding them is a complex task based mainly on visual inspection. We present a study on the properties of a large sample of jellyfish candidates in the multi-cluster system A901/2. We find evidence that the multi-cluster is triggering RPS events in preferential regions in the system and that these galaxies have enhanced specific star formation rates. We also use the software Morfometryka in order to analyse the unique morphometric features in jellyfish galaxies providing a better comprehension of their physical state and future. This can help unravel the physical processes behind such extreme morphologies as well as possibly automatising the search for jellyfish galaxy candidates in large surveys in the next era of instruments.

Keywords

galaxies: evolutiongalaxies: structuregalaxies: clusters: generalgalaxies: intergalactic medium
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S352: Uncovering Early Galaxy Evolution in the ALMA and JWST Era , June 2019 , pp. 318 - 319
Copyright
© International Astronomical Union 2020

References

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Ruggiero, R., Machado, R. E. G., Roman-Oliveira, F. V., Chies-Santos, A. L., Lima Neto, G. B., Doubrawa, L., & Rodrguez del Pino, B. 2019, MNRAS, 484, 906CrossRefGoogle Scholar