226 citations · 3.2k across the 92 of their papers we have counts for
13 papers · 1 filter
METIS high-contrast imaging simulations: From instrument modelling to science readiness
Gilles Orban de Xivry, Olivier Absil, Iain Hammond +9
The Mid-infrared Extremely Large Telescope (ELT) Imager and Spectrograph (METIS) instrument, expected to see first light in early 2030, aims to detect and characterise exoplanets a…
Advancing European High-Contrast Imaging R&D Towards the Habitable Worlds Observatory
Iva Laginja, Óscar Carrión-González, Romain Laugier +31
The Habitable Worlds Observatory (HWO) will enable a transformative leap in the direct imaging and characterization of Earth-like exoplanets. For this, NASA is focusing on early in…
An Alternating Minimization Algorithm with Trajectory for Direct Exoplanet Detection -- The AMAT Algorithm
Hazan Daglayan, Simon Vary, Olivier Absil +6
Effective image post-processing algorithms are vital for the successful direct imaging of exoplanets. Standard PSF subtraction methods use techniques based on a low-rank approximat…
High contrast at short separation with VLTI/GRAVITY: Bringing Gaia companions to light
N. Pourré, T. O. Winterhalder, J. -B. Le Bouquin +173
Since 2019, GRAVITY has provided direct observations of giant planets and brown dwarfs at separations of down to 95 mas from the host star. Some of these observations have provided…
A catalogue of dual-field interferometric binary calibrators
M. Nowak, S. Lacour, R. Abuter +97
Dual-field interferometric observations with VLTI/GRAVITY sometimes require the use of a "binary calibrator", a binary star whose individual components remain unresolved by the int…
Inverse-problem versus principal component analysis methods for angular differential imaging of circumstellar disks. The mustard algorithm
Sandrine Juillard, Valentin Christiaens, Olivier Absil
Circumstellar disk images have highlighted a wide variety of morphological features. Recovering disk images from high-contrast angular differential imaging (ADI) sequences are howe…
Astronomical high-contrast imaging of circumstellar disks: MUSTARD inverse-problem versus PCA-based methods
S. Juillard, V. Christiaens, O. Absil
Recent observations have shown that protoplanetary disks around young stars can embed a wide variety of features. Raw disk images produced by high-contrast imaging instruments are…
Exoplanet Imaging Data Challenge, phase II: Characterization of exoplanet signals in high-contrast images
F. Cantalloube, V. Christiaens, C. Cantero +10
Today, there exists a wide variety of algorithms dedicated to high-contrast imaging, especially for the detection and characterisation of exoplanet signals. These algorithms are ta…
VIP: Vortex Image Processing package for high-contrast direct imaging
C. A. Gomez Gonzalez, O. Wertz, O. Absil +11
We present the Vortex Image Processing (VIP) library, a python package dedicated to astronomical high-contrast imaging. Our package relies on the extensive python stack of scientif…
The VORTEX project: first results and perspectives
Olivier Absil, Dimitri Mawet, Christian Delacroix +15
(abridged) Vortex coronagraphs are among the most promising solutions to perform high contrast imaging at small angular separations. They feature a very small inner working angle,…
Laboratory demonstration of a mid-infrared AGPM vector vortex coronagraph
Christian Delacroix, Olivier Absil, Pontus Forsberg +9
Coronagraphy is a powerful technique to achieve high contrast imaging and hence to image faint companions around bright targets. Various concepts have been used in the visible and…
L'-band AGPM vector vortex coronagraph's first light on VLT/NACO: Discovery of a late-type companion at two beamwidths from an F0V star
D. Mawet, O. Absil, C. Delacroix +20
Context. High contrast imaging has thoroughly combed through the limited search space accessible with first-generation ground-based adaptive optics instruments and the Hubble Space…
Image quality and high contrast improvements on VLT/NACO
Julien H. V. Girard, Jared O'Neal, Dimitri Mawet +6
NACO is the famous and versatile diffraction limited NIR imager and spectrograph with which ESO celebrated 10 years of Adaptive Optics at the VLT. Since two years a substantial eff…