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SUMMARY:Young star clusters in the act of emerging: a JWST view of stellar
  feedback and timescales
DTSTART:20260513T113000Z
DTEND:20260513T123000Z
DTSTAMP:20260520T151100Z
UID:indico-event-9515@indico.fysik.su.se
DESCRIPTION:Speakers: Alex Pedrini (Stockholm University)\n\nYoung star cl
 usters form embedded in dusty gas clouds\, with feedback from massive star
 s driving their emergence over a few million years. The infrared capabilit
 ies of the JWST now allow us to capture this process in unprecedented deta
 il\, enabling the detection and characterisation of thousands of emerging 
 young star clusters (eYSCs) at few-parsec scales in nearby galaxies.\nWhil
 e high-resolution studies in the Milky Way provide detailed insight into i
 ndividual regions\, examining the full population of clusters in nearby ga
 laxies is essential to understand the broader effects of star formation ac
 ross diverse galactic environments.\nIn this seminar\, I will present the 
 main results of my PhD project\, which focus on the emergence phase of sta
 r clusters as a probe of feedback timescales. I will introduce the census 
 of eYSCs identified in the FEAST (Feedback in Emerging extrAgalactic Star 
 ClusTer) sample\, including M51\, M83\, NGC 628\, and the low-metallicity 
 dwarf NGC 4449. I will show that these clusters exhibit distinct near-infr
 ared colours\, driven by hot dust and polycyclic aromatic hydrocarbon (PAH
 ) emission at 3.3 μm\, and are largely absent from UV–optical HST-selec
 ted cluster samples.\nI will discuss the challenges of modelling their spe
 ctral energy distributions with current tools\, and present observational 
 evidence for a relation between cluster emerging timescales and stellar ma
 ss. Finally\, I will highlight the power of such studies to investigate th
 e morphologies of different ISM gas phases in star-forming regions and the
 ir relation to the powering stellar sources\, providing new constraints on
  the role of stellar feedback in shaping their evolution.\n\nhttps://indic
 o.fysik.su.se/event/9515/
LOCATION:FC61 (AlbaNova Main Building)
URL:https://indico.fysik.su.se/event/9515/
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