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PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-9441
DTSTART:20251113T213000Z
DTEND:20251113T223000Z
DTSTAMP:20260413T084201Z
LAST-MODIFIED:20251107T202244Z
LOCATION:4421 Sterling Hall
SUMMARY:Planet-Forming and Photoevaporating Disks in the Orion Nebula 
 Cluster: The View from ALMA and JWST\, Astronomy Colloquium\, Dr. Nick
  Ballering\, Research Scientist at SSI/UW-Madison
DESCRIPTION:The Orion Nebula Cluster (ONC) offers the clearest view of
  protoplanetary disks in a rich cluster\, the typical environment for 
 star and planet-formation in the Galaxy. I will present results from h
 igh-resolution ALMA observations of over 200 disks in the ONC that rev
 eal their dust masses and sizes\, key properties in determining what t
 ypes of planets can form. I will also highlight images of proplyds—d
 isks in the process of being photoevaporated by the cluster’s harsh 
 radiation field—where ALMA traces free-free emission and radio recom
 bination lines from outflowing ionized gas. I will then turn to the in
 frared and share recent JWST NIRSpec observations of warm atomic and m
 olecular gas from three ONC proplyds. Finally\, I will show how JWST N
 IRCam observations can reveal the presence of water ice in an edge-on 
 disk seen in silhouette in front of the Orion Nebula.
URL:https://www.physics.wisc.edu/events/?id=9441
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