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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-2589
DTSTART:20120209T213000Z
DURATION:PT1H0M0S
DTSTAMP:20260413T014728Z
LAST-MODIFIED:20120131T162951Z
LOCATION:4421 Sterling Hall
SUMMARY:A New Look at Stellar Evolution: Chi-by-Eye Evolves to Bayesia
 n Statistics\, Astronomy Colloquium\, Ted von Hippel\, Embry-Riddle Ae
 ronautical University
DESCRIPTION:In the 1960's stars were observed with single-channel phot
 ometers or worse\, stellar evolution codes were run on a computer that
  barely bested a slide rule\, and the results were compared by eye.  W
 hile the observations and stellar models have improved tremendously in
  the interim\, the methods by which we compare stellar models to data 
 generally have not.  I will describe a new Bayesian approach to this p
 roblem.  Our Bayesian technique yields better precision in the ages\, 
 distances\, etc. for stars and clusters\, provides a fuller understand
 ing of errors and correlations among the derived parameters\, and allo
 ws us to attack a range of problems in stellar evolution in a consiste
 nt manner for the first time.
URL:https://www.physics.wisc.edu/events/?id=2589
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