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    <title><string language="fre"><![CDATA[FORMATION ET ÉVOLUTION DES SYSTÈMES PLANÉTAIRES ET EXTRASOLAIRES]]></string></title>
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        <string language="fre"><![CDATA[Since the discovery of an extended disk of dust 
around beta Pictoris in the late 80's, this system has been intensively 
observed and modeled, in connection with planetary system 
formation/evolution. The presence of planets has been proposed over 2 
decades to explain various observations, and high angular resolution 
imaging allowed us recently to directly image a planet orbiting about 9 
AU from the star; this is so far the closest extrasolar planet imaged.

I will present a brief overview of the main indirect signatures of 
planets around the star, and describe our recent results on beta 
Pictoris b characterization, as well as its connection to the dust disk.
 I will also present the current knowledge on the presence of other 
planets around the star, using several complementary detection technics.



This single system gives already interesting information/constraints
 about giant planet formation and evolution. I will describe how 
forthcoming high angular resolution imagers such as Sphere on the VLT 
will improve our knowledge on giant planet characteristics and help 
further constraining giant planet formation scenarios.]]></string></description>
    <keyword><string language="fre"><![CDATA[système planétaire]]></string></keyword><keyword><string language="fre"><![CDATA[exoplanète ; planète extra-solaire]]></string></keyword><keyword><string language="fre"><![CDATA[Beta Pictoris]]></string></keyword>
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FN:Anne-Marie LAGRANGE
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NOTE:Anne-Marie Lagrange, née en 1962, est une astrophysicienne française, spécialiste dans l'étude des systèmes planétaires extrasolaires (exoplanètes). Elle est notamment connue pour la découverte de l'exoplanète Beta Pictoris b par imagerie directe en 2008. Elle est membre de l'Académie des sciences.    Source : Wikipedia (https://fr.wikipedia.org/wiki/Anne-Marie_Lagrange) 
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            <date><dateTime>2012-03-30</dateTime></date>
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FN:Jean MOUETTE
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URL;TYPE=work:http://www.iap.fr/
ROLE:content provider
NOTE:Responsable communication à l'Institut d'Astrophysique de Paris  
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            <date><dateTime>2012-03-30</dateTime></date>
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