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Rechercher

OSUG - Terre Univers Environnement OSUG

Séminaire du Jeudi 5 avril 2018

Orbital characterization of giant exoplanets and brown dwarfs with the VLT planet finder SPHERE

Anne-Lise Maire (MPIA Heidelberg)
Thursday April 5th - 11am
IPAG Seminar Room - IPAG

Astrometric monitoring of directly imaged exoplanets and brown dwarfs allows the study of their orbital parameters and system architectures. Because of the long orbital periods and/or faintness of these objects, accurate astrometry is challenging when based on data acquired on timescales of a few years. The new high-contrast imaging instrument VLT/SPHERE provides exquisite contrasts and astrometric accuracies down to about 1 mas thanks to its dedicated design and the use of optimized observational strategy. We will present the results of the astrometric monitorings of the brown dwarf HR2562 B and giant exoplanet 51 Eridani b monitored as part of the SPHERE consortium exoplanet imaging survey.


Sous la tutelle de:

tutelles

Sous la tutelle de:

CNRS Université Grenoble Alpes