Modeling the Color Magnitude Relation for Galaxy Clusters
Noelia Jimenez, Sofia A. Cora, Analia Smith Castelli, and Lilia P., Bassino
TL;DR
This paper combines cosmological simulations and semi-analytic models to explore the origin of the color-magnitude relation in galaxy clusters, highlighting the role of minor mergers in bright galaxy deviations.
Contribution
It introduces a novel approach integrating N-body simulations with semi-analytic models to explain the CMR in galaxy clusters, emphasizing minor mergers' impact.
Findings
Minor mergers cause deviations in bright galaxy CMR.
The model reproduces observed CMR trends.
Minor mergers influence galaxy evolution in clusters.
Abstract
We investigate the origin of the colour-magnitude relation (CMR) observed in cluster galaxies by using a combination of a cosmological N-body simulation of a cluster of galaxies and a semi-analytic model of galaxy formation. The departure of galaxies in the bright end of the CMR with respect to the trend denoted by less luminous galaxies could be explained by the influence of minor mergers
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Stellar, planetary, and galactic studies · Astronomy and Astrophysical Research