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View article: Galaxy groups in various evolutionary stages
Galaxy groups in various evolutionary stages Open
Context. The formation process of galaxy groups is not yet fully understood. In particular, that of fossil groups (FGs) is still under debate. Due to the relative rarity of FGs, large samples of such objects are still missing. Aims. The pr…
Preparing for Rubin-LSST -- Detecting Brightest Cluster Galaxies with Machine Learning in the LSST DP0.2 simulation Open
The future Rubin Legacy Survey of Space and Time (LSST) is expected to deliver its first data release in the current of 2025. The upcoming survey will provide us with images of galaxy clusters in the optical to the near-infrared, with unri…
Off-centre supermassive black holes in bright central galaxies Open
Supermassive black holes (SMBHs) are believed to reside at the centre of massive galaxies such as brightest cluster galaxies (BCGs). However, as BCGs experienced numerous galaxy mergers throughout their history, the central BH can be signi…
A UNIONS view of the brightest central galaxies of candidate fossil groups Open
Context. The formation process of fossil groups (FGs) is still under debate, and, because of their relative rarity, large samples of such objects are still missing. Aims. The aim of the present paper is to increase the sample of known FGs,…
A UNIONS view of the brightest central galaxies of candidate fossil groups Open
The formation process of fossil groups (FGs) is still under debate, and large samples of such objects are still missing. The aim of this paper is to increase the sample of known FGs, and to analyse the properties of their brightest group g…
Étude des propriétés physiques des galaxies plus brillantes d’amas et de leur évolution dans le temps Open
Galaxy clusters are the largest gravitationally bound structures of the Universe. At the center of these clusters generally reside the most massive galaxies observable today. These galaxies are refered to as Brightest Cluster Galaxies (BCG…
Physical properties of more than one thousand brightest cluster galaxies detected in the Canada-France-Hawaii Telescope Legacy Survey Open
Context. Brightest cluster galaxies (BCGs) are very massive elliptical galaxies found at the centres of clusters. Their study gives clues to the formation and evolution of the clusters in which they are embedded. Aims. We analyse here in a…
Physical properties of brightest cluster galaxies up to redshift 1.80 based on HST data Open
\nContext. Brightest cluster galaxies (BCGs) grow by accreting numerous smaller galaxies, and can be used as tracers of cluster formation and evolution in the cosmic web. However, there is still controversy regarding the main epoch of form…