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Division of Electronics, Detectors and Computing for Physics (DEDIP)


Institute of Research into the Fundamental Laws of the Universe
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JWST observations suggest that the rocky exoplanet TRAPPIST-1 c may have a thin atmosphere.
Jun 20, 2023
JWST observations suggest that the rocky exoplanet TRAPPIST-1 c may have a thin atmosphere.
Using the James Webb Space Telescope, a group of astronomers led by MPIA, in collaboration with a team from the Astrophysics Department of CEA Paris-Saclay, searched for an atmosphere on the rocky exoplanet TRAPPIST-1 c. Although the planet is almost identical to Venus in terms of size and mass, its atmosphere turned out to be very different. By analyzing the heat emitted by the planet, they concluded that it may have only a tenuous atmosphere containing a minimum of carbon dioxide.
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May 10, 2023
Auscultating a mini-Neptune: taking the temperature with JWST's MIRI instrument
Discovered in 2009, exoplanet GJ1214b orbits a small star just 40 light-years away. With a mass around six times that of Earth and an atmosphere made up of hydrogen and helium, it is considered a "mini-Neptune". A team from NASA, in collaboration with researchers from CEA Paris-Saclay, pointed the JWST at the planet using the MIRI instrument, built by CEA Paris-Saclay, for some 40 hours.
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Auscultating a mini-Neptune: taking the temperature with JWST's MIRI instrument
MIRIm instrument on the James Webb space telescope detects, for the first time, the thermal emission of a temperate rocky planet
Mar 27, 2023
MIRIm instrument on the James Webb space telescope detects, for the first time, the thermal emission of a temperate rocky planet
An international team of researchers has used NASA's James Webb Space Telescope to measure the temperature of the rocky exoplanet TRAPPIST-1 b. This is the world's first detection of thermal emission from a rocky exoplanet as small and “cool” as the rocky planets in our own solar system. TRAPPIST-1 b receives about twice the amount of energy as Venus receives from the Sun and four times more than Earth.
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Sep 07, 2022
James Webb: first images of an exoplanet in the mid-infrared
Nine months after its launch, the James Webb Space Telescope provides unprecedented images of an exoplanet, the first ever obtained in the mid-infrared. These images should revolutionize our knowledge of extrasolar worlds. A team of French astronomers has been involved in the observations of this planet and in the design of the coronagraphs of the telescope.  Launched on December 25, 2021, the James Webb completed its test phase in July 2022.
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James Webb: first images of an exoplanet in the mid-infrared
First Images from the Webb Telescope
Jul 12, 2022
First Images from the Webb Telescope
The dawn of a new era in astronomy has begun as the world discovers for the first time the full capabilities of the NASA/ESA/CSA James Webb Space Telescope. The telescope's first color images and spectroscopic data, which reveal a spectacular array of previously elusive cosmic features, were released on July 12, 2022.
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Apr 29, 2022
First MIRI image in its test phase
On the evening of the 28th, we could read on NASA's blog: "It's official, the alignment of NASA's James Webb Space Telescope is now complete"! To say that all the instruments of the James Webb Space Telescope are perfectly aligned, means that the primary mirror is well adjusted. The images are already breathtaking while the adjustment phase of all the elements of the telescope is not finished yet.
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First MIRI image in its test phase
HAT-P-32b: a rapidly evaporating planet
Oct 12, 2021
HAT-P-32b: a rapidly evaporating planet
Planets that are strongly irradiated by their host stars develop extended atmospheres that can be probed during transits. These atmospheres undergo photoevaporation which can lead to significant changes in the mass and composition of the planets if it continues for several gigayears. These planets are therefore valuable for understanding planetary evolution.
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Nov 28, 2017
The first observing programs of the James Webb Space Telescope finally revealed
TO BE TRANSLATED Après une sélection sévère, les premières cibles d'observation du télescope spatial James Web (JWST) qui doit être lancé au printemps 2019, viennent d'être dévoilées.
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The first observing programs of the James Webb Space Telescope finally revealed
Fit for space
Apr 16, 2008
Fit for space
The MIRIM-OB instrument for JWST passed the test
The realization of MIRIM-OB, the optical bench of MIRI (Mid Infra Red Imager), one of the four instruments which will equip the forthcoming space telescope JWST has just completed an essential step with the demonstration that it fulfills the various and rigorous constraints imposed by its use in space.
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