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SUMMARY:JWST's View of Star Formation and Mass Growth in Early Galaxies - 
 Thomas Harvey (University of Manchester)
DTSTART:20251008T090000Z
DTEND:20251008T100000Z
UID:TALK237538@talks.cam.ac.uk
CONTACT:Chris Lovell
DESCRIPTION:JWST's NIRCam has transformed our understanding of galaxy stru
 cture in the early Universe through unprecedented spatial resolution and s
 ensitivity. Deep wide and medium-band photometry enables precise rest-UV a
 nd optical SED constraints\, revealing both opportunities and challenges f
 or stellar population modeling.\n \nI will present recent work on the gala
 xy stellar mass function and total stellar mass density evolution at z > 7
 \, followed by spatially-resolved analysis of 200+ galaxies at z > 5. This
  reveals how internal structure affects integrated stellar mass estimates 
 through 'outshining' effects. I will examine systematic uncertainties in h
 igh-redshift SED fitting—including IMF\, SPS models\, SFH parametrizatio
 ns\, and dust laws—and their impact on derived parameters.\n\nFinally\, 
 I will discuss moving beyond traditional SED fitting using machine learnin
 g approaches\, particularly simulation-based inference (SBI)\, for large-s
 cale Bayesian inference from wide-area surveys. I will present ongoing wor
 k making SBI more accessible for fitting photometry and spectroscopy\, ena
 bling rapid constraints on stellar\, nebular\, and AGN properties in high-
 redshift galaxies.\n
LOCATION:Ryle Meeting Room\, KICC
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