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SUMMARY:Are there too many high-z protoclusters? - Seunghwan Lim
DTSTART:20231122T134000Z
DTEND:20231122T140500Z
UID:TALK208792@talks.cam.ac.uk
CONTACT:107642
DESCRIPTION:Protoclusters are responsible for more than 20 per cent of the
  cosmic star formation at z>2\, also considered as places where the first 
 galaxies and cosmic structures have formed\, playing a pivotal role in the
  reionization and episodic star formation \nevents in the Universe. Despit
 e its importance\, however\, its study has been severely limited by severa
 l critical challenges\, in a large part due to inhomogeneities between the
  studies. I will focus\, in particular\, the diversity in the volume used 
 \nto define protoclusters\, and its impact on the estimation of their prop
 erties. We tackle the issue using the new hydrodynamical simulations of FL
 AMINGO project. Its large box size of up to 2.8cGpc on a side enables a fi
 rst reliable statistical analysis of the rarest population in the Universe
 . The predicted star-formation history is in a good agreement with observa
 tions\, unlike most of the previous simulation results. I will present a c
 omparison of the number density between the model prediction and recent JW
 ST observations\, and discuss its implication in connection to the definit
 ion of protoclusters.
LOCATION:The Hoyle Lecture Theatre + Zoom 
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