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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Investigating the projected phase space of Gaussian and non-Gaussian clusters

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Autor(es):
Sampaio, V. M. [1, 2] ; de Carvalho, R. R. [2] ; Ferreras, I [3, 4, 5] ; Lagana, T. F. [2] ; Ribeiro, A. L. B. [6] ; Rembold, S. B. [7]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] INPE MCT, Div Astrofis, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[2] NAT Univ Cruzeiro do Sul, Univ Cidade Sao Paulo, BR-01506000 Sao Paulo, SP - Brazil
[3] Univ La Laguna, Dept Astrofis, E-38206 Tenerife - Spain
[4] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT - England
[5] Inst Astrofis Canarias, Calle Via Lactea S-N, E-38205 Tenerife - Spain
[6] Univ Estadual Santa Cruz, Lab Astrofis Teor & Observac, BR-45650000 Ilheus, BA - Brazil
[7] Univ Fed Santa Maria, BR-97105900 Santa Maria, RS - Brazil
Número total de Afiliações: 7
Tipo de documento: Artigo Científico
Fonte: Monthly Notices of the Royal Astronomical Society; v. 503, n. 2, p. 3065-3080, MAY 2021.
Citações Web of Science: 0
Resumo

By way of the projected phase space (PPS), we investigate the relation between galaxy properties and cluster environment in a subsample of groups from the Yang catalogue. The sample is split according to the Gaussianity of the velocity distribution in the group into Gaussian (G) and non-Gaussian (NG). Our sample is limited to massive clusters with M-200 >= 10(14) M-circle dot and 0.03 <= z <= 0.1. NG clusters are more massive, less concentrated and have an excess of faint (F) galaxies compared to G clusters. NG clusters show mixed distributions of galaxy properties in the PPS compared to the G case. Using the relation between infall time and locus on the PPS, we find that, on average, NG clusters accreted similar to 10(11) M-circle dot more stellar mass in the last similar to 5 Gyr than G clusters. The relation between galaxy properties and infall time is significantly different for galaxies in G and NG systems. The more mixed distribution in the PPS of NG clusters translates into shallower relations with infall time. F galaxies whose first crossing of the cluster virial radius happened 2-4 Gyr ago in NG clusters are older and more metal-rich than in G systems. All these results suggest that NG clusters experience a higher accretion of pre-processed galaxies, which characterizes G and NG clusters as different environments to study galaxy evolution. (AU)

Processo FAPESP: 14/11156-4 - O que determina o crescimento da massa estelar de galáxias elípticas? Intrínseco ou ambiente: a saga contínua
Beneficiário:Reinaldo Ramos de Carvalho
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 18/02626-8 - Astrofísica de Raios-X: o histórico de enriquecimento químico de grupos e aglomerados de galáxias
Beneficiário:Tatiana Ferraz Laganá
Linha de fomento: Auxílio à Pesquisa - Regular