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SUMMARY:Metal enrichment of a dusty star-forming galaxies at the EoR with 
 JWST/INIRSpec IFS - Jan Scholtz / IoA
DTSTART:20250305T131500Z
DTEND:20250305T134000Z
UID:TALK229084@talks.cam.ac.uk
CONTACT:128254
DESCRIPTION:\nWith the recent discovery of quiescent galaxies at z>3\, stu
 dying of dusty star-forming galaxies at high redshift became more vital th
 an ever\, as they are thought to be precursors of quiescent galaxies. Howe
 ver\, until the launch of JWST\, studying the rest-frame of optical emissi
 on of these sources at redshifts higher than 3 was out of reach of astrono
 mers\, often solely relying on the ALMA observations of their FIR emission
  lines. In this talk\, I will present one of the first JWST/NIRSpec IFS da
 ta of a massive dusty star-forming galaxy at the Epoch of Reionisation. CO
 S-3018\, is a unique UV bright galaxy (LUV>2 L*) at z~6.8\, previously onl
 y observed using ALMA ([CII]158 microns\, [OIII] 88 microns)\, VLT X-Shoot
 er (Lyman-alpha) and HST broadband photometry. Furthermore\, this galaxy h
 as a large amount of dust (log Mdust =10.7 Msol) and an excess of [OIII]88
 micron emission suggesting that this might be an AGN or has non-standard I
 SM conditions such as AGN. I will present deep high-resolution JWST/NIRSpe
 c IFS observations of rest-frame UV and optical continuum and emission lin
 es\, in combination with deep ALMA [CII] and [OIII]88micron observations a
 nd NIRCam photometry. Using the deep and unique NIRSpec IFS (PRISM+R2700) 
 observations\, I will show the ISM conditions in this unique galaxy: excit
 ation conditions (extreme star formation or AGN?)\, metallicity gradient\,
  location of dust obscured (from ALMA high resolution observations) and un
 obscured star formation. Finally\, I will answer the question: What is dri
 ving such an extreme production of dust in this galaxy and UV luminosity i
 n this galaxy?\n
LOCATION:The Hoyle Lecture Theatre + Zoom 
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