The miniJPAS survey: the galaxy populations in the miniJPAS cluster mJPC2470-1771

Galaxy clusters are one of the largest structures in the Universe. Due to the interaction among the galaxy members, they are a great laboratory to study the role of the environment in galaxy evolution. J-PAS survey will soon start to scan thousands of square degrees in the sky, and with its large great field of view (4.2 square degrees) and filter system (56 narrowband filters and 4 broadband filters in the optical spectral range) will provide excellent data for cluster’s detection and galaxy evolution studies. In the meantime, miniJPAS data is already available: a survey of 1 square degree along the AEGIs line using J-PAS’ filter system. In this work, we use this data to study the largest cluster detected with AMICO in miniJPAS: the cluster mJPC2470-1771. Using the fossil record method for stellar pulsations and the BaySeaGal, we are able to retrieve the stellar population properties of the galaxy members, compare them to the whole AEGIS population. We also establish a criteria to select the emission line galaxies belonging to the cluster so we can study their properties separately and evaluate the possible presence of AGNs in the cluster. Lastly, we study the star formation rates and star formation histories of the galaxy members. This analysis allows us to retrieve the evolutionary state of the galaxy members, and the role that play environment in quenching the star formation in galaxies. This work shows the power of the J-PAS survey for this kind of studies.

14/10/2021 - 12:30
Julio Rodriguez Martin
IAA-CSIC, Granada, España