A VLT/VIMOS view of two Planck multiple-cluster systems: Structure and galaxy properties

被引：0

作者：

Wicker, R. ^{[1
]}

Aghanim, N. ^{[1
]}

Bonjean, V. ^{[2
,3
,4
,5
]}

Lecoq, E. ^{[1
]}

Douspis, M. ^{[1
]}

Burgarella, D. ^{[6
]}

Pointecouteau, E. ^{[7
]}

机构：

[1] Univ Paris Saclay, Inst Astrophys Spatiale, CNRS, Bat 120-121 Rue Jean Teillac, F-91405 Orsay, France

[2] Univ La Laguna, Tenerife 38206, Spain

[3] Inst Astrofis Canarias, Tenerife 38205, Spain

[4] LIENSs LIttoral Environm & Soc, Batiment Marie Curie,Ave Michel Crepeau, F-17042 La Rochelle 1, France

[5] LIENSs LIttoral Environm & Soc, Batiment ILE 2,Rue Olympe de Gouges, F-17000 La Rochelle, France

[6] Univ Aix Marseille, Lab Astrophys Marseille, CNRS, UMR7326,INSU, 38 Rue Freder Joliot Curie, F-13388 Marseille 13, France

[7] Univ Toulouse, IRAP, CNRS, CNES,UPS, 9 Colonel Roche,BP44346, F-31028 Toulouse 4, France

来源：

ASTRONOMY & ASTROPHYSICS | 2023年 / 676卷

基金：

美国国家航空航天局; 欧洲研究理事会;

关键词：

large-scale structure of Universe; galaxies: clusters: individual: PLCKG214.6+36.9; galaxies: clusters: individual: PLCKG334.8-38.0; galaxies: distances and redshifts; galaxies: stellar content; SUPERCLUSTER-VOID NETWORK; STAR-FORMATION; DATA RELEASE; STELLAR; CATALOG; MASSES; CORE; GAS;

D O I：

10.1051/0004-6361/202346608

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analysed spectroscopic data obtained with VLT/VIMOS for two multiple-cluster systems, PLCKG214.6+36.9 and PLCKG334.8-38.0, discovered by Planck via their thermal Sunyaev-Zel'dovich signal. Combining the optical spectroscopy for the redshift determination and photometric data from galaxy surveys (SDSS, WISE and DESI), we were able to study the structure of the two multiple-cluster systems to determine their nature and the properties of their member galaxies. We found that the two systems are mainly populated by passive galaxies and that PLCKG214.6 + 36.9 consists of a pair of clusters at redshift z = 0.445 and an isolated cluster in the background at z = 0.498, whereas the system PLCKG334.8 - 38.0 is a chance association of three independent clusters at redshifts of z = 0.367, z = 0.292, and z = 0.33. We also find evidence of remaining star formation activity in the highest redshift cluster of PLCKG214.6 + 36.9, at z = 0.498.

引用

页数：12

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