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UID:31@osups.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20251016T140000
DTEND;TZID=Europe/Paris:20251016T150000
DTSTAMP:20251002T150754Z
URL:https://osups.universite-paris-saclay.fr/calendrier/characterization-o
 f-exoplanets-with-the-jwst/
SUMMARY:Characterization of exoplanets with the JWST
DESCRIPTION:The first seminar of this year at IAS will take place on Thursd
 ay 16 October\, at 14h in room 123 or 209 (to be confirmed). Mathilde Mâ
 lin (Johns Hopkins University / Space Telescope Science Institute) wil
 l present her research on the characterization of exoplanets with the JWST
  ! Coffee at 13h30 !\n\nCharacterization of imaged exoplanets and their en
 vironment at mid-infrared wavelengths with the James Webb Space Telescope.
 \n\nThe James Webb Space Telescope is revolutionizing our understanding of
  exoplanetary systems. Its mid-infrared instrument\, MIRI\, opens a comple
 tely new observational window\, providing unprecedented sensitivity in a w
 avelength regime previously inaccessible. MIRI first observed some of the 
 most iconic exoplanetary systems\, obtaining deep coronagraphic images in 
 three filters spanning 10 to 15 microns. All the known planets in the targ
 eted systems are clearly detected. This has allowed\, for the first time\,
  direct measurements of their mid-infrared fluxes. The results suggest tha
 t these planets are larger and cooler than earlier near-infrared estimates
  implied\, aligning more closely with theoretical evolutionary models. The
  observations also delivered the first spatially resolved view of the warm
  inner debris disks of these systems\, structures analogous to the asteroi
 d belt in our own solar system. MIRI is also equipped with a medium-resolu
 tion spectrometer that delivers spectro-imaging across the 5–28 micron r
 ange. This instrument enables the first mid-infrared spectra of exoplanets
 \, revealing the presence of carbon-rich circumplanetary disks. By develop
 ing high-contrast imaging methods for spectroscopic data\, we can now dete
 ct and measure new key molecular features in exoplanet atmospheres. Determ
 ining these molecular abundances is key to unraveling how planets form\, h
 ow they evolve\, and what physical and chemical processes shape them into 
 the worlds we observe today. I’ll be presenting GTO results from the Exo
 MIRI and Telescope Science Team\, together with ongoing works from several
  programs.
CATEGORIES:Séminaires
LOCATION:IAS\, Bât. 121 rue Jean Teillac\, Orsay\, 91400\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Bât. 121 rue Jean Teillac\
 , Orsay\, 91400\, France;X-APPLE-RADIUS=100;X-TITLE=IAS:geo:0,0
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TZID:Europe/Paris
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DTSTART:20250330T030000
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