SEMINÁRIO DO DEPARTAMENTO DE ASTRONOMIA
The Multi-Scale Interplay Between Dark and Luminous Matter
a talk by Antonio D. Montero-Dorta (Universidad Técnica Federico Santa María - USM, Chile)
Abstract:
The prevailing paradigm of galaxy formation posits that galaxies form within dark matter halos, which provide the potential wells needed for baryonic matter to accumulate, cool, and condense. Halos, in turn, are collapsed structures that originate from the high-density peaks of the underlying matter field. These objects and fields are connected, albeit in a complex way, by their internal properties, clustering, and responses to the environment. Characterizing the mapping between galaxies, halos, and the matter density field is essential not only for extracting cosmological information from galaxy surveys, but also for uncovering the physical mechanisms that shape galaxy evolution. In this talk, I will concentrate on new results that connect the clustering of galaxies and halos with their internal and environmental properties. First, I will present the galaxy bias profile inside cosmic voids, which was measured for the first time from hydrodynamical simulations using innovative clustering techniques. Second, I will discuss several observational methods to probe the multiple dependencies of galaxy clustering, which provide observational constraints on secondary bias that can be directly compared with results from cosmological simulations. I will conclude by highlighting the relevance of these connections for both galaxy evolution and cosmology.
Short-Bio:
- Originally from the Canary Islands (Spain)
- Masters Degree @ Instituto de Astrofísica de Canarias (IAC, Spain); PhD Degree @ Instituto de Astrofísica de Andalucía (IAA, Spain) with Francisco Prada.
- Postdocs@ University of Utah (USA, working for the BOSS Survey) with Adam Bolton; University of Sao Paulo (Brazil) with Raul Abramo.
- @ USM, Chile since 2020, currently an Associate Professor.
- My expertise lies at the intersection of galaxy evolution and cosmology: halo-galaxy connection, large-scale structure/cosmology, statistical properties of the galaxy population from galaxy surveys (SDSS, BOSS, etc)...
Google Meet: https://meet.google.com/pcw-gmem-jyi
Link da transmissão: https://www.youtube.com/c/AstronomiaIAGUSP/live