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UID:UW-Physics-Event-4459
DTSTART:20170203T213000Z
DURATION:PT1H0M0S
DTSTAMP:20260309T174233Z
LAST-MODIFIED:20170125T174817Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Lab Astro and the Origins of the Chemical Elements\, Physics D
 epartment Colloquium\, James E. Lawler\, introduced by UW Emeritus Pro
 f. Wilmer Anderson\, UW-Madison
DESCRIPTION:James E. Lawler\, UW-Physics\, 2017 Winner of the American
  Astronomical Society Laboratory Astrophysics Prize <br>
\nOnly a few 
 of the lightest or primordial nuclei were made just after the Big Bang
 .  Other light nuclei up to the Fe-group are made by fusion in stars. 
  Heavier nuclei are made primarily via r(apid)-process and s(low)-proc
 ess n(eutron)-capture events.  Although the s-process n-capture is fai
 rly well understood\, the r-process n-capture events remain poorly und
 erstood.  The relative role of Core Collapse SNe and n-star mergers wi
 ll likely be understood in the next few decades.   I will discuss rece
 nt studies of old Metal-Poor stars that are revealing some new details
  of nucleosynthesis.  This progress is due to the availability of high
  resolution spectra from large ground based telescopes\, access to the
  UV via HST\, and better laboratory data
URL:https://www.physics.wisc.edu/events/?id=4459
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