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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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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]
Total Authors: 6
[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
Total Affiliations: 7
Document type: Journal article
Source: Monthly Notices of the Royal Astronomical Society; v. 503, n. 2, p. 3065-3080, MAY 2021.
Web of Science Citations: 0

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)

FAPESP's process: 14/11156-4 - What drives the stellar mass growth of Early-Type galaxies? Born or made: the saga continues
Grantee:Reinaldo Ramos de Carvalho
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/02626-8 - X-ray astronomy: the history of chemical enrichment of groups and clusters of galaxies
Grantee:Tatiana Ferraz Laganá
Support type: Regular Research Grants