- Date de réalisation : 30 Mars 2012
- Durée du programme : 46 min
- Classification Dewey : Médias documentaires, éducatifs, d'information, journalisme, édition
- Auteur(s) : LAGRANGE Anne-Marie
- Réalisateur(s) : MOUETTE Jean
Dans la même collectionDARK MATTERS 11-13 December 2017: Joe Silk’s 75th Birthday THE INFORMATICS REVOLUTION IN THE SCIENCES THE WARPED SIDE OF THE UNIVERSE: NUMERICAL RELATIVITY, GRAVITATIONAL WAVES AND MACROSCOPIC QUANTUM ... STAR FORMATION IN THE DESERT: PROBING THE LOW-DENSITY EXTREMES STELLAR DYNAMICS AT THE CENTERS OF GALAXIES CHARTING THE TRANSIENT SKY: THE PALOMAR TRANSIENT FACTORY
FORMATION ET ÉVOLUTION DES SYSTÈMES PLANÉTAIRES ET EXTRASOLAIRES
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.