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SUMMARY:Role of AGN in galaxy evolution in z~3-11 with Deep JWST spectrosc
 opy - Jan Scholtz
DTSTART:20240522T124000Z
DTEND:20240522T130500Z
UID:TALK217063@talks.cam.ac.uk
CONTACT:107642
DESCRIPTION:AGN feedback remains a vital path for the quenching of galaxie
 s in theoretical models. With the recent discovery of quiescent galaxies a
 t z>3\, identification of typical moderate AGNs at high redshift became mo
 re vital than ever\, in order to explain the ever-growing population of qu
 iescent galaxies. As typical selection techniques such as X-ray and radio 
 observations are not sensitive enough to detect typical AGN population at 
 high redshifts (z>3)\, we need to rely on optical emission lines\, not acc
 essible to astronomers at these redshifts until the launch of JWST. Howeve
 r\, typical selection techniques using optical emission lines (such as BPT
  diagram)\, fail to reliably select AGN due to low metallicities of galaxi
 es at high redshift\, hence the need to revisit AGN selection. In this tal
 k\, I will present the results from the JWST Advanced Galactic Survey (JAD
 ES) and its deep NIRSpec/MSA observations of 500 galaxies between z~3-11. 
 I will describe the selection of AGN host galaxies at high-z using these e
 mission lines\, to reliably distinguish between star-forming and AGN host 
 galaxies.Using this unique state-of-the-art dataset\, I will present the f
 irst characterization of moderate luminosity AGN and their host galaxy pro
 perties (such as type-1/type-2 fractions\, black-hole masses\, star-format
 ion rates\, stellar mass\, etc.) and compare them to AGN in the local Univ
 erse and at Cosmic Noon (z=1-3)
LOCATION:The Hoyle Lecture Theatre + Zoom 
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