Astronomy

Augmenter la limite de détection des exoplanètes par combinaison optimale d'observations multi-époques en imagerie directe

Exoplanets detection by direct imaging remains one of the most challenging field of modern astronomy. The signal of the star can prevent the detection of orbiting companions in single datasets, but combining information from several observations can …

Exoplanet detection in angular differential imaging: combining a statistics-based learning with a deep-based learning for improved detections

Detection of exoplanets by direct imaging is an active research topic in astronomy for the characterization of young substellar objects. The very high contrast between the host star and its companions makes the detection particularly challenging. In …

Exoplanet detection in angular differential imaging: combining a statistics-based learning with a deep-based learning for improved detections

Detection of exoplanets by direct imaging is an active research topic in astronomy for the characterization of young substellar objects. The very high contrast between the host star and its companions makes the detection particularly challenging. In …

New post-processing algorithms for exoplanet detection and circumstellar disk reconstruction by direct imaging

Studying the circumstellar environmment by direct imaging is an active research topic in astronomy. The very high contrast between the host star and the objects of interest (exoplanets and disk) makes the task particularly challenging thus requiring …

New post-processing algorithms for exoplanet detection and circumstellar disk reconstruction by direct imaging

Studying the circumstellar environmment by direct imaging is an active research topic in astronomy. The very high contrast between the host star and the objects of interest (exoplanets and disk) makes the task particularly challenging thus requiring …

Multispectral Image Reconstruction of Faint Circumstellar Environments from High Contrast Angular Spectral Differential Imaging (ASDI) Data

We recently proposed REXPACO (Flasseur et al., 2021, A&A A62), an algorithm for imaging circumstellar environments from high contrast Angular Differential Imaging (ADI) data. In the context of high contrast imaging where the signal of interest is …

Multispectral Image Reconstruction of Faint Circumstellar Environments from High Contrast Angular Spectral Differential Imaging (ASDI) Data

We recently proposed REXPACO (Flasseur et al., 2021, A&A A62), an algorithm for imaging circumstellar environments from high contrast Angular Differential Imaging (ADI) data. In the context of high contrast imaging where the signal of interest is …

Optimal multi-epoch combination of direct imaging observations for improved exoplanet detection

Exoplanets detection by direct imaging remains one of the most challenging field of modern astronomy. The signal of the star can prevent the detection of orbiting companions in single datasets, but combining information from several observations …

Optimal multi-epoch combination of direct imaging observations for improved exoplanet detection

Exoplanets detection by direct imaging remains one of the most challenging field of modern astronomy. The signal of the star can prevent the detection of orbiting companions in single datasets, but combining information from several observations …

A new PACO based method to push the exoplanets detection limits and to estimate their orbital parameters simultaneously by combining multi-epoch direct imaging observations

Exoplanets detection by direct imaging remains one of the most challenging field of astronomy. The very high contrast between the host star and its orbiting companions can prevent the exoplanets detection in a single dataset. However, combining the …