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DTSTAMP:20261106T045021Z
SUMMARY:Astrophysics Weekly Seminar: Mari-Liis Aru – Under UV Pressure: I
 mprints of external photoevaporation on protoplanetary disks
DESCRIPTION:The evolution of protoplanetary disks is influenced by a combin
 ation of internal processes linked to the central star\, and external infl
 uences from the surrounding environment. Both pathways produce photoevapor
 ative winds that drive disk dispersal from opposite directions. In star cl
 usters\, the UV radiation from massive OB stars irradiates disks externall
 y\, strongly affecting disk sizes\, masses\, and survival timescales. Unti
 l recently\, the same emission lines were used for studying both internall
 y and externally driven photoevaporative winds. However\, disentangling th
 e winds is essential for interpreting spectroscopic observations and compl
 eting models of disk evolution.\nIn this talk\, I will give an overview of
  the recent studies on externally irradiated disks—proplyds\, in the Ori
 on Nebula Cluster (ONC) with a focus on a spatially resolved dataset acqui
 red with VLT/MUSE. I will present results in our effort to identify signat
 ures unique to external photoevaporation\, including a comparison of ONC s
 ources with those in low-mass star-forming regions\, and discuss tracers w
 hich open new windows into researching proplyds.
URL:https://www.imperial.ac.uk/events/216273/astrophysics-weekly-seminar-ma
 ri-liis-aru-under-uv-pressure-imprints-of-external-photoevaporation-on-pro
 toplanetary-disks/
DTSTART;TZID=Europe/London:20261110T141500
DTEND;TZID=Europe/London:20261110T151500
LOCATION:711C\, Huxley Building\, South Kensington Campus\, Imperial Colleg
 e London\, London\, SW7 2AZ\, United Kingdom
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