SEMINÁRIO DO DEPARTAMENTO DE ASTRONOMIA
Characterizing the dynamical state of galaxy clusters in the era of large surveys
by Rodrigo Carrasco (Gemini Observatory/NSF NOIRLab)
Abstract:
The study of galaxy clusters is essential to understanding how galaxies evolve and the evolution of the Universe. Clusters are fundamental testbeds for characterizing and studying the dark matter distribution. The distribution of dark matter can be evaluated using different tools such as galaxy velocities, X-ray observations of the intra-cluster medium and gravitational lensing (strong and weak). Galaxy clusters provide access to environments with different conditions and dynamical states, from those that are almost virialized (relaxed) to those that present extreme conditions (disturbed or in the process of fusion). Therefore, to coherently study the distribution of dark matter, we need to characterize the dynamical state of a large sample of galaxy clusters. In this presentation I summarize the ongoing efforts to classify the dynamical state of a large sample of galaxy clusters using different proxies, as well as the spectroscopic campaign of the extreme disturbed clusters, and the selection of a large sample of merging clusters using the eRASS 1 and DECaLS DR10 catalogs.
Short-Bio:
I received the PhD in Astronomy at IAG/USP in 2001. Since then I have held the position of Astronomer at Gemini Observatory in Chile, covering many responsibilities (GMOS-S and GSAOI instrument scientist, GeMS commissioning lead among others). My research focuses on the study of the population of galaxies in cluster and groups of galaxies, mainly in the kinematics and dynamics of the galaxies in these structures. In particular I’m interested in evolution of the cluster and their parent galaxy population and how the presence of sub-structures and cluster merges can affect the morphology and the physics of the galaxies.
Google Meet: https://meet.google.com/pcw-gmem-jyi
Link da transmissão: https://www.youtube.com/c/AstronomiaIAGUSP/live