TRACING THE ASSEMBLY HISTORIES OF GALAXY CLUSTERS IN THE NEARBY UNIVERSE-Reference-Cited by-同舟云学术

TRACING THE ASSEMBLY HISTORIES OF GALAXY CLUSTERS IN THE NEARBY UNIVERSE

Published:2023-10-01 Issue:2 Volume:59 Page:345-377
ISSN:0185-1101
Container-title:Revista Mexicana de Astronomía y Astrofísica
language:
Short-container-title:RMxAA

Author:

Caretta C. A.¹,Andernach H.²,Chow-Martínez M.³,Coziol R.¹,De Anda-Suárez J.⁴,Hernández-Aguayo C.⁵,Islas-Islas J. M.⁶,Mireles-Vidales M. M.¹,Muñiz-Torres M. A.¹,Santoyo-Ruiz H.⁷,Trejo-Alonso J. J.⁸,Venkatapathy Y.⁹,Zúñiga J. M.¹

Affiliation:

1. Departamento de Astronomía (DCNE-CGT), Universidad de Guanajuato, Callejón de Jalisco s/n, C.P. 36023, Guanajuato (Gto.), México.

2. 1. Departamento de Astronomía (DCNE-CGT), Universidad de Guanajuato, Callejón de Jalisco s/n, C.P. 36023, Guanajuato (Gto.), México. 2. Thüringer Landessternwarte, Sternwarte 5, D-07778, Tautenburg, Germany.

3. 1. Departamento de Astronomía (DCNE-CGT), Universidad de Guanajuato, Callejón de Jalisco s/n, C.P. 36023, Guanajuato (Gto.), México. 2. Instituto de Geología y Geofísica, Universidad Nacional Autónoma de Nicaragua, Managua, Nicaragua.

4. Tecnológico Nacional de México, ITS Purísma del Rincón, Purísma del Rincón (Gto.), México.

5. 1. Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748, Garching, Germany. 2. Excellence Cluster ORIGINS, Boltzmannstrasse 2, D-85748, Garching, Germany.

6. 1. Departamento de Astronomía (DCNE-CGT), Universidad de Guanajuato, Callejón de Jalisco s/n, C.P. 36023, Guanajuato (Gto.), México. 2. Universidad Tecnológica de Tulancingo, Tulancingo (Hgo.), México.

7. Descubre Museo Interactivo de Ciencia y Tecnología, Aguascalientes (Ags.), México.

8. 1. Departamento de Astronomía (DCNE-CGT), Universidad de Guanajuato, Callejón de Jalisco s/n, C.P. 36023, Guanajuato (Gto.), México. 2. Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro (Qro.), México.

9. 1. Departamento de Astronomía (DCNE-CGT), Universidad de Guanajuato, Callejón de Jalisco s/n, C.P. 36023, Guanajuato (Gto.), México. 2. Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, Morelia (Mich.), México.

Abstract

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.

Publisher

Universidad Nacional Autonoma de Mexico

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

http://www.astroscu.unam.mx/rmaa/RMxAA..59-2/PDF/RMxAA..59-2_ccaretta-XIII.pdf

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