TRACING THE ASSEMBLY HISTORIES OF GALAXY CLUSTERS IN THE NEARBY UNIVERSE

被引：1

作者：

Caretta, C. A. ^{[1
]}

Andernach, H. ^{[1
,2
]}

Chow-Martinez, M. ^{[1
,3
]}

Coziol, R. ^{[1
]}

De Anda-Suarez, J. ^{[4
]}

Hernandez-Aguayo, C. ^{[5
,6
]}

Islas-Islas, J. M. ^{[7
]}

Mireles-Vidales, M. M. ^{[1
]}

Muniz-Torres, M. A. ^{[1
]}

Santoyo-Ruiz, H. ^{[8
]}

Trejo-Alonso, J. J. ^{[1
,9
]}

Venkatapathy, Y. ^{[1
,10
]}

Zuniga, J. M. ^{[1
]}

机构：

[1] Univ Guanajuato, Dept Astron DCNE CGT, Callejon Jalisco S-N, Guanajuato 36023, Gto, Mexico

[2] Thuringer Landessternwarte, Sternwarte 5, D-07778 Tautenburg, Germany

[3] Univ Nacl Autonoma Nicaragua, Inst Geol & Geofis, Managua, Nicaragua

[4] Tecnol Nacl Mexico, ITS Purisma Rincon, Purisma Del Rincon, Gto, Mexico

[5] Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748 Garching, Germany

[6] Excellence Cluster ORIGINS, Bolrzmannstr 2, D-85748 Garching, Germany

[7] Univ Tecnol Tulancingo, Tulancingo, Hgo, Mexico

[8] Descubre Museo Interact Ciencia & Tecnol, Aguascalientes, Ags, Mexico

[9] Univ Autonoma Queretaro, Fac Ingn, Queretaro, Qro, Mexico

[10] Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, Morelia, Mich, Mexico

来源：

REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA | 2023年 / 59卷 / 02期

基金：

美国国家航空航天局; 美国国家科学基金会; 英国科学技术设施理事会;

关键词：

galaxies: clusters: general; galaxies: groups: general; large-scalestructure of Universe; ALL-SKY SURVEY; 1ST SPECTROSCOPIC DATA; X-RAY-PROPERTIES; RICH CLUSTERS; STAR-FORMATION; DATA RELEASE; ABELL CLUSTERS; REDSHIFT SURVEY; STELLAR MASS; SUBSTRUCTURE;

D O I：

10.22201/ia.01851101p.2023.59.02.13

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have compiled a sample of 67 nearby (z < 0.15) clusters of galaxies, for which on average more than 150 spectroscopic members are available and, by applying different methods to detect substructures in their galaxy distribution, we have studied their assembly history. Our analysis confirms that substructures are present in 70% of our sample, having a significant dynamical impact in 57% of them. A classification of the assembly state of the clusters based on the dynamical significance of their substructures is proposed. In 19% of our clusters, the originally identified brightest cluster galaxy is not the central gravitationally dominant galaxy (CDG), but turns out to be either the second-rank, or the dominant galaxy of a substructure (a SDG, in our classification), or even a possible "fossil" galaxy in the periphery of the cluster. Moreover, no correlation was found in general between the projected offset of the CDG from the X-ray peak and its peculiar velocity.

引用

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页码：345 / 377

页数：33

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