My journey to unravel the mysteries of redshift 2 galaxies

by Manuel Behrendt (MPE Munich)

Thursday 25 May 2023, 11:30 → 12:30 Europe/Rome

Sala Jappelli (Osservatorio Astronomico di Padova)

This presentation delves into the intriguing properties of high-redshift 
galaxies and their enigmatic nature. Beginning with critically examining 
the classical understanding of disc instabilities, we explore the 
challenges they face in accurately predicting the observed clumpy 
structure within galaxies. Furthermore, we investigate the diverse range 
of conclusions derived from various galaxy simulations, focusing on the 
morphology and migration of clumps. To shed light on these 
discrepancies, we introduce the Avalon project, where we simulate the 
interstellar medium (ISM) in more detail and explore the complex 
interplay between star formation, feedback, turbulence, and the 
multiphase nature of the ISM at very high resolution. First results from 
a massive galaxy at redshift 2 reveal that a significant portion of the 
hydrogen is in a neutral gas phase which is mainly ignored in the 
literature. Implications of this finding extend, e.g., to our 
understanding of clump structure formation and estimations on dark 
matter fraction.

 

 

 

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