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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2353
DTSTART:20111208T213000Z
DTEND:20111208T230000Z
DTSTAMP:20260420T100240Z
LAST-MODIFIED:20111201T162853Z
LOCATION:4421 Sterling Hall
SUMMARY:Imaging the Surfaces of Stars\, Astronomy Colloquium\, John Mo
 nnier\, University of Michigan
DESCRIPTION: Under even the best atmospheric conditions\, telescope di
 ffraction fundamentally limits the angular resolution for astronomical
  imaging. Using interferometry\, we can coherently combine light from 
 widely-separated telescopes to overcome the single-telescope diffracti
 on limit to boost our imaging resolution by orders of magnitude. I wil
 l review recent technical and scientific breakthroughs made possible b
 y the Michigan Infrared Combiner of the CHARA Array on Mt. Wilson\, CA
 \, with baselines of 330 meters allowing near-infrared imaging with su
 b-milli-arcsecond resolution. I will present the first resolved images
  of main sequence stars besides the Sun\, focusing on the oblate and g
 ravity-darkened photospheres of rapidly rotating stars.  We can now al
 so resolve the interacting components of close binary stars for the fi
 rst time and I will give an update on the remarkable on-going eclipse 
 of epsilon Aurigae.<br>
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URL:https://www.physics.wisc.edu/events/?id=2353
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