A Multi-Wavelength, Three-Dimensional View into Protocluster Environments
Channel: IAC Astrofísica
Date: 21/11/2023

A Multi-Wavelength, Three-Dimensional View into Protocluster Environments  

Talk by Dr. Sofia Gallego (Astroparticle and Cosmology Laboratory (Paris))
Given at the Instituto de Astrofísica de Canarias on November 21st, 2023 12:30 PM
Galaxies are embedded within a network of interconnected filaments,  essential for their formation and growth. Simultaneously, they emit  radiation and enriched matter back into their environment, influencing  the evolution of the cosmic gas. Recent advancements in wide-field  spectrographs offer a unique perspective, allowing us to probe the  spatial distribution and properties of the circumgalactic medium at high  redshift, particularly the Lyman-alpha line emitted by cold hydrogen  gas. These insights are especially valuable in overdense regions, like  protoclusters and groups, where we can explore most of the physical  mechanisms at play. By combining data from instruments such as KCWI,  MOSFIRE, IRAC, LRIS, and HST, we aim to decipher the various mechanisms  that steer the evolution of galaxies and protocluster environments  around the Cosmic Noon epoch, unveiling how mergers, AGN feedback, and  galactic outflows influence both the large-scale gas distribution and  the general properties of the galaxies themselves. Nonetheless, several  degeneracies persist among the observed properties of the gas and the  potential physical mechanisms responsible, underscoring the necessity  for improved models of these cosmic phenomena and a larger statistical  sample of protocluster environments.        
        
http://iactalks.iac.es/talks/view/1720
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