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SUMMARY:Inside-out growth in the Early Universe: a core in a vigorously st
 ar-forming disc - William Baker (University of Cambridge)
DTSTART:20240528T101500Z
DTEND:20240528T110000Z
UID:TALK215872@talks.cam.ac.uk
CONTACT:Charles Walker
DESCRIPTION:In extragalactic astrophysics\, the mechanisms governing morph
 ological evolution and structural diversity among high-z galaxies represen
 t a key area of active research. In this talk\, I will present JADES-GS+53
 .18343-27.79097\, a galaxy of complex morphology\, which existed during on
 e of the earliest stages of the universe at z=7.43 (i.e. within its first 
 700 million years).\n\nWith a stellar mass exceeding 10^8.6 solar masses\,
  this star-forming galaxy exhibits a multi-component structure\, comprisin
 g of a compact core with a half-light radius of 144 parsecs\, a vigorous s
 tar-forming disc spanning 468 parsecs\, and a distinct star-forming clump\
 , each characterised by unique star-formation histories. The central stell
 ar mass density of \nthis high-z galaxy approaches that of the most massiv
 e elliptical galaxies observed today\, despite its total stellar mass bein
 g around only  a one-thousandth of theirs. The galaxy also appears to be a
  possible progenitor of the kind of redshift 2 ellipticals we have seen pr
 eviously.\n\nFurthermore\, the radial profile of the specific star-formati
 on rate of the galaxy shows a sharp increase towards the outskirts\, sugge
 sting the detection of inside-out growth in a high-z galaxy within the fir
 st billion years of the Universe’s existence. 
LOCATION:Coffee area\, Battcock Centre
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