Calibrations and inversion methods in high contrast imaging for the direct detection of exoplanets
, 2007 The science of exoplanets is today a primary research area in astronomy. Their direct observation from the ground is nevertheless a highly delicate issue : On the first hand the flux ratio between the planet and its host star reaches 106 to 109. On the other hand, the atmospheric turbulence corrugates image formation.
Jean-François Sauvage
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Combining Multi-Spectral Data With Statistical and Deep-Learning Models for Improved Exoplanet Detection in Direct Imaging at High Contrast [PDF]
European Signal Processing Conference, 2023 Exoplanet detection by direct imaging is a difficult task: the faint signals from the objects of interest are buried under a spatially structured nuisance component induced by the host star.
Olivier Flasseur +5 more
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deep PACO: Combining statistical models with deep learning for exoplanet detection and characterization in direct imaging at high contrast [PDF]
Monthly notices of the Royal Astronomical Society, 2023 Direct imaging is an active research topic in astronomy for the detection and the characterization of young sub-stellar objects. The very high contrast between the host star and its companions makes the observations particularly challenging.
Olivier Flasseur +5 more
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VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars
The Astronomical Journal, 2023 NASA’s Transiting Exoplanet Survey Satellite (TESS) is an all-sky survey mission designed to find transiting exoplanets orbiting nearby bright stars. It has identified more than 329 transiting exoplanets, and almost 6000 candidates remain unvalidated. In
Priyashkumar Mistry +50 more
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Trade-offs in high-contrast integral field spectroscopy for exoplanet detection and characterisation. Young gas giants in emission [PDF]
Astronomy & Astrophysics, 2023 Context: Combining high-contrast imaging with medium- or high-resolution integral field spectroscopy has the potential to boost the detection rate of exoplanets, especially at small angular separations.
Rico Landman +5 more
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The Astronomical Journal, 2023 Large-scale exoplanet surveys like the Transiting Exoplanet Survey Satellite (TESS) mission are powerful tools for discovering large numbers of exoplanet candidates.
Christopher R. Mann +50 more
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A new estimation of astrometric exoplanet detection limits in the habitable zone around nearby stars [PDF]
Astronomy & Astrophysics, 2022 Context. Astrometry is less sensitive to stellar activity than the radial velocity technique when attempting to detect Earth mass planets in the habitable zone of solar-type stars.
N. Meunier, A. Lagrange
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A continuous multiple hypothesis testing framework for optimal exoplanet detection [PDF]
Annals of Applied Statistics, 2022 When searching for exoplanets, one wants to count how many planets orbit a given star, and to determine what their characteristics are. If the estimated planet characteristics are too far from those of a planet truly present, this should be considered as
N. Hara +3 more
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The Astronomical Journal, 2023 We perform an in-depth analysis of the recently validated TOI-3884 system, an M4-dwarf star with a transiting super-Neptune. Using high-precision light curves obtained with the 3.5 m Apache Point Observatory and radial velocity observations with the ...
Jessica E. Libby-Roberts +27 more
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OGLE-2019-BLG-1180Lb: Discovery of a Wide-orbit Jupiter-mass Planet around a Late-type Star
The Astronomical Journal, 2023 We report on the discovery and analysis of the planetary microlensing event OGLE-2019-BLG-1180 with a planet-to-star mass ratio q ∼ 0.003. The event OGLE-2019-BLG-1180 has unambiguous cusp-passing and caustic-crossing anomalies, which were caused by a ...
Sun-Ju Chung +35 more
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