News: This Symposium has been partially funded by the research project PID2019-109592GB-I00 financiado por MCIN/AEI/10.13039/501100011033

Until the last decade, the low surface brightness universe was almost unreachable by the community. Many research groups developed theoretical models that predicted many properties of galaxies that could not be tested. It changed in recent years with the advent of observations by new high-resolution and high-sensitivity surveys. From these observations, research groups worldwide presented many discoveries that confirmed and refused some of the predictions by available theoretical models. More interestingly, some of these discoveries have the potential of changing the current paradigm of galaxy formation and evolution in a Lambda-CDM universe and are not yet fully understood. In the years to come, new surveys and space missions will enrich the currently available low surface brightness catalog with observations of substructures around galaxies farther away. These new observations will help researchers face the current challenges and will probably raise new questions that will need to be solved by theorists.

In this symposium, we aim to bring together experts on different aspects of galaxy formation and evolution (on observations of low surface brightness structures, on galactic dynamics, on the theory of galaxy formation, and cosmological simulations) to identify current challenges and recent advances as well as future science avenues. Our main objective is to prepare the community for the high-quality data to come by detecting synergies among research groups, forging new international collaborations, and identifying the challenges in the local universe galaxy formation and evolution studies.

Programme

Monday 27th June 2022

• Session 1: Satellite Surveys in the Local Group and beyond
Topics: Searches of satellites in the Milky Way and Andromeda. Dwarf galaxy surveys in the Local volume. Planes of dwarf galaxies in nearby galaxies.


• Session 2: The dark matter content and stellar population of satellites
Topics: Internal dynamics, dynamical modeling, and tidal disruption of dwarf galaxies. SFH of Local group satellites. Ultra-faint dwarfs. Quenching of satellite galaxies: theory and observations.


• Session 3: Tidal Streams and the Disruption of Satellite Galaxies
Topics: Surveys of tidal streams and halo substructure in the Milky Way. The Sagittarius stellar stream in the Gaia era. Spectroscopy surveys of stellar streams in the MW and beyond.

• Session 4: Stellar streams and satellites as dark matter probes in the L-CDM Universe
Topics: Constraints on the Galactic potential and DM halo shape of the Milky Way. Stellar streams as small-scale constraints on DM. Galaxy formation at the faint end of the Luminosity Function. Substructure in phase space vs. LCDM predictions. Perturbed tidal streams by small-scale DM halos. Tests of dynamical friction from the observed/simulated orbital decay.


• Session 5: Constraints on galaxy formation and evolution from satellites and tidal streams' properties
Topics: Satellite tidal disruption as constraints on built-up of galaxies. Star-forming tidal streams vs. old streams as a probe of galaxy evolution. Satellite galaxy distribution around central galaxies. Satellites in individual and collective infalls.


• Session 6: Future large-scale surveys, facilities, and space missions
Topics: Rubin Observatory's LSST. Nancy Grace Roman Space Telescope. DELVE. Gaia. Euclid. DUNES. WEAVE. 4MOST.

Invited speakers

• Session 1: Nicolas Martin (Obs. Strasbourg, France)
• Session 2: Giuseppina Battaglia (IAC, Spain)
• Session 3: Khyati Malhan (MPIA, Heidelberg, Germany)
• Session 4: Denis Erkal (University of Surrey, UK)
• Session 5: Isabel M. Santos-Santos (ICC-Durham University, UK)
• Session 6: Else Starkenburg (Kapteyn Astronomical Institute, The Netherlands)

Scientific organisers

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