International audience
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2024 (v1)Journal articleUploaded on: March 3, 2024
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2022 (v1)Journal article
Coronagraphic imaging of exoplanets and circumstellar environments using ground-based instruments on large telescopes is intrinsically limited by speckles induced by uncorrected aberrations. These aberrations originate from the imperfect correction of the atmosphere by an extreme adaptive optics system; from static optical defects; or from...
Uploaded on: December 3, 2022 -
June 17, 2021 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
2022 (v1)Journal article
From November 2019 to April 2020, the prototypical red supergiant Betelgeuse experienced an unexpected and historic dimming. This event was observed worldwide by astrophysicists, and also by the general public with the naked eye. We present here the results of our observing campaign with ESO's VLT and VLTI in the visible and infrared domains....
Uploaded on: February 22, 2023 -
July 2018 (v1)Journal article
Context. The consortium of the Spectro-Polarimetric High-contrast Exoplanet REsearch installed at the Very Large Telescope (SPHERE/VLT) has been operating its guaranteed observation time (260 nights over five years) since February 2015. The main part of this time (200 nights) is dedicated to the detection and characterization of young and giant...
Uploaded on: December 4, 2022