Detection and characterization of galaxy clusters in the COSMOS field with the AMICO algorithm

In this work we made use of the AMICO algorithm to detect clusters in COSMOS2015, a photometric galaxy catalogue of the COSMOS field (Laigle+16). We divided our study in two different analyses being the cluster search on r-band photometry in the range 0<z<1.25 and on the H-band photometry in the range 0<z< 1.8. We detected a total number of 481 clusters over the COSMOS field area. We also identified the cluster member galaxies by assigning them a probabilistic membership. During the cluster search we introduced some new methods within AMICO, to allow its application on new kinds of data-sets. Thank to the rich multi-wavelength covering of the COSMOS field, we identified the X-ray counterparts of out optical detections, by making use of the publicly available catalogues produced by Gozaliasl+19 and George+11 and of the X-ray 0.5-2 keV emission map (Gozaliasl+19). This comparison has been carried out with the main goal of testing the consistency between the AMICO catalogues and the X-ray ones. These latter were also used to compare the reliability of our different analyses. Moreover, we calibrated the AMICO mass proxies scaling relations using the available X-ray mass estimates.