Master Thesis Online
Imaging characterization of the radial-velocity brown dwarf HD18757B
Teloi, Mayané 
Promotor(s) :
Maire, Anne-Lise
;
Loicq, Jerôme
Date of defense : 24-Jun-2021/25-Jun-2021 • Permalink : http://hdl.handle.net/2268.2/11572
All files (archive ZIP)
post_processedFinalFrame.png
EvolutionaryModels_predictions.JPGDetails
| Title : | Imaging characterization of the radial-velocity brown dwarf HD18757B |
| Translated title : | [fr] Caractérisation par imagerie de la naine brune HD18757B mesurée par vitesse radiale |
| Author : | Teloi, Mayané
|
| Date of defense : | 24-Jun-2021/25-Jun-2021 |
| Advisor(s) : | Maire, Anne-Lise
Loicq, Jerôme
|
| Committee's member(s) : | Hutsemekers, Damien
Delacroix, Christian
|
| Language : | English |
| Number of pages : | 67 |
| Keywords : | [en] brown dwarf [en] high contrast angular differential imaging [en] Vortex Imaging Processing [en] Markov-Chain Monte Carlo |
| Discipline(s) : | Physical, chemical, mathematical & earth Sciences > Space science, astronomy & astrophysics |
| Research unit : | Univerisity of Liège |
| Target public : | Researchers Professionals of domain Student General public |
| Institution(s) : | Université de Liège, Liège, Belgique |
| Degree: | Master en ingénieur civil en aérospatiale, à finalité spécialisée en "aerospace engineering" |
| Faculty: | Master thesis of the Faculté des Sciences appliquées |
Abstract
[en] The goal of the thesis is the characterization of the substellar companion HD18757B. Several techniques are applied to retrieve the photometric and orbital information of the object. At first, HD18757B is observed in the L' band with the imaging instrument LMIRCam mounted on the Large Binocular Telescope. This observation is based on the high contrast angular differential imaging method and is further processed with the Vortex Image Processing package. Secondly, imaging data is coupled with astrometric observation from Gaia/Hipparcos and radial velocity measurements from Sophie and Elodie to run in a Markov-Chain Monte Carlo simulation. Finally, the measured parameters are compared to the properties of brown dwarfs from evolutionary and formation models.
File(s)
Document(s)
Annexe(s)
post_processedFinalFrame.png
Description: Output of the post-processing on the angular differential data cube
Size: 178.05 kB
Format: image/png
EvolutionaryModels_predictions.JPG
Description: Evolutionary models predictions
Size: 78.67 kB
Format: JPEG
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