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

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]

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

• 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
• Modalidade de apoio: 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
• Modalidade de apoio: Auxílio à Pesquisa - Regular