Study of AGN properties in central galaxies and satellites from SDSS

MESA, VALERIA; ALONSO, MA. SOL; COLDWELL, GEORGINA V; DUPLANCIC, FERNANDA; GARCÍA LAMBAS, DIEGO; NILO CASTELLON, J. L

Congreso; XVII SOCHIAS meeting; 2022

Sociedad Chilena de Astronomía

This poster presents a sample of active galaxy nuclei (AGN) belonging to galaxy systems composed of acentral object and two satellites. The sample was obtained from the Sloan Digital Sky Survey (SDSS-DR14) adopting criteria of projected distance ( rp <150 h-1 kpc) and radial velocity difference (ΔV < 500km/s), restricting satellites at least 1.5 magnitudes fainter than their central galaxy. In addition, anadequate isolation criteria was used to avoid belonging to larger structures. Furthermore, the interactionbetween the members of each system was classified through a detailed visual inspection. Once theclassified sample was obtained, a correlation was carried out with an AGN catalog, selecting thosesystems where at least one of its members present an active nuclei. We have also considered controlsamples to analyze the results. The main goal of this study consists of the analysis of the differentscenarios in which these systems are found and their influence on the nuclear activity of the galaxies thatcompose them.