Open AccessStudy of groups/clusters of galaxies with the SDSS
Author(s) -
Ф. Г. Копылова,
А. И. Копылов
Publication year - 2022
Publication title -
astronomy at the epoch of multimessenger studies. proceedings of the vak-2021 conference, aug 23–28, 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.51194/vak2021.2022.1.1.148
Subject(s) - physics , astrophysics , radius , galaxy , galaxy group , halo , luminosity , galaxy cluster , cluster (spacecraft) , brightest cluster galaxy , galaxy formation and evolution , scaling , astronomy , geometry , computer security , computer science , programming language , mathematics
For a large sample of groups/clusters of galaxies (N =185), we obtained the scaling relations among of their photometricaland dynamical parameters. We nd:0.77±0.011. that in the virialized regions of the galaxy systems the total luminosity increase with mass L K ∝ M 200(M K <−21. m 0);2. that the new halo boundary of the galaxy systems corresponds to the splashback radius R sp . These radius is denedby the observed intergrated distribution of the number of galaxies as a function of the angular distance from thegroup/cluster center squared;3. that the fraction of galaxies with quenched star formation is maximal in the central regions of the galaxy systems,and it decreases to the radius R sp , but remains higher than in the eld on ∼ 27%.