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DTSTAMP:20260416T025005
DTSTART:20131017T113000
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DTEND:20131017T123000
URL:https://murmitoyen.com/events/vanille/udem/detail/288012
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Imaging the Surfaces of Stars
DESCRIPTION:Conférence de John D. Monnier\, University of MichiganRésumé
  :Under even the best atmospheric conditions\, telescope diffraction funda
 mentally limits the angular resolution for astronomical imaging. Using int
 erferometry\, we can coherently combine light from widely-separated telesc
 opes to overcome the single-telescope diffraction limit to boost our imagi
 ng resolution by orders of magnitude. I will review recent technical and s
 cientific breakthroughs made possible by the Michigan Infrared Combiner of
  the CHARA Array on Mt. Wilson\, CA\, with baselines of 330 meters allowin
 g near-infrared imaging with sub-milli-arcsecond resolution. I will presen
 t the first resolved images of main sequence stars besides the Sun\, focus
 ing on the oblate and gravity-darkened photospheres of rapidly rotating st
 ars.  We can now also resolve the interacting components of close binary 
 stars for the first time and I will highlight the recent remarkable eclips
 e of epsilon Aurigae as viewed by CHARA.  Présentée par le Groupe Astr
 onomie et astrophysique du Département de physique de l'Université de M
 ontréal. Cette conférence est destinée à des spécialistes dans le dom
 aine de l'astrophysique et sera donnée en anglais.
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