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SUMMARY:Towards homogeneous studies of high-z protoclusters - Seunghwan Li
 m (Cavendish)
DTSTART:20231020T103000Z
DTEND:20231020T113000Z
UID:TALK207034@talks.cam.ac.uk
CONTACT:Sandro Tacchella
DESCRIPTION:Protoclusters and overdensities of galaxies at high redshifts 
 are critical for understanding the galaxy formation and the evolution of t
 he Universe\, as they account for at least 20 per cent (up to 50 per cent)
  of the cosmic star formation at z>2. Greatest challenges in studying prot
 oclusters\, however\, have been inhomogeneities found often times in the l
 iterature\, arising from different definitions and various selection techn
 iques used to identify such regions from observations. Comparisons with th
 eoretical models are even more complicated\, by how to define protocluster
 s\, and by exactly how to mimick the observational selections. In this tal
 k\, I will present new results and insights based on a new simulation suit
 e of FLAMINGO project\, as well as highlighting important lessons from sim
 ulations of the previous generation for protocluster studies. FLAMINGO has
  unprecedentedly large box size of 2.8cGpc for hydrodynamical cosmological
  simulations\, which must be big enough to contain the rarest\, most extre
 me objects in the Universe\, protoclusters\, given their expected number d
 ensities from observations. Also\, we will show how the results compare wi
 th newly found protocluster candidates from JWST at z>5\, and discuss thei
 r implications. 
LOCATION:Ryle seminar room + online
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