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PRODID:-//Heidelberg University//HePhySTO//EN
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DTEND:20260625T101500Z
UID:1902a0051c412c02e844bb1fcfab60b3@physik.uni-heidelberg.de
DTSTAMP:20260411T182858Z
LOCATION:ARI\, Moenchhofstrasse 12-14\, Seminarraum 1.OG
DESCRIPTION:Stellar feedback is a key driver of galaxy evolution\, yet its 
 impact on the\ninterstellar medium remains difficult to quantify across ent
 ire galactic environments. \nMassive stars inject energy and momentum throu
 gh radiation\, stellar\nwinds\, and supernova explosions\, clearing out the
 ir immediate surroundings.\nIn the process\, they sweep up and compress the
  ambient gas into dense\, ring-like structures often associated with enhanc
 ed star formation. At the same\ntime\, competing processes such as turbulen
 t mixing\, radiation\, and winds disperse this dense material\, erase the s
 urrounding enhancement\, and ultimately\nsuppress further star formation. S
 tellar-feedback-driven bubbles therefore both\ntrigger and quench star form
 ation\, making them key regulators of galactic star\nformation histories.\n
 Using James Webb Space Telescope observations of nearby galaxies from the\n
 PHANGS collaboration\, we probe this process across entire galactic disks. 
 We\nidentify and extract voids using a novel algorithm based on persistent 
 homology\,\ncapable of detecting spatial structures on all scales accessibl
 e in the analyzed\ndata. By tracking the topology of the emission\, this me
 thod robustly identifies\nvoids without imposing arbitrary intensity thresh
 olds or geometric assumptions.\nAlthough the observations provide only a sn
 apshot in time\, the large population\nof detected bubbles enables a statis
 tical reconstruction of their evolutionary\nsequence. We then classify the 
 detected bubbles based on the physical properties\nof the voids and their s
 urrounding medium\, separating systems with enhanced\nshells around evacuat
 ed interiors from more evolved structures in which the\ncentral void begins
  to refill and the surrounding enhancement has faded. This\nframework trace
 s the lifecycle of stellar-feedback-driven bubbles and their role\nin regul
 ating star formation in nearby galaxies.\n\nImported from https://www.physi
 k.uni-heidelberg.de/hephysto/ (no warranty for accuracy).
URL;VALUE=URI:https://www.physik.uni-heidelberg.de/hephysto/index.php?s=tal
 k&id=12572
SUMMARY:ARI Institute Colloquium: Slawa Kabanovic - Tracing Stellar Feedbac
 k-Driven Bubbles Across Nearby Galaxies with JWST
DTSTART:20260625T091500Z
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