Statistical tests with multi-wavelength Kernel-phase analysis for the detection and characterization of planetary companions

  title={Statistical tests with multi-wavelength Kernel-phase analysis for the detection and characterization of planetary companions},
  author={Mamadou N'diaye and David L. Mary and Frantz Martinache and Roxanne Ligi and Nick Cvetojevic and Peter Chingaipe and Romain Laugier},
  booktitle={Astronomical Telescopes + Instrumentation},
Kernel phase is a method to interpret stellar point source images by considering their formation as the analytical result of an interferometric process. Using Fourier formalism, this method allows for observing planetary companions around nearby stars at separations down to half a telescope resolution element, typically 20 mas for a 8m class telescope in H band. The Kernel-phase analysis has so far been mainly focused on working with a single monochromatic light image, recently providing… 



Kernel-phase detection limits-Hypothesis testing and the example of JWST NIRISS full-pupil images

Context. The James Webb Space Telescope (JWST) will offer high angular resolution observing capability in the near-infrared with masking interferometry on the Near-Infrared Imager and Slitless


The detection of high contrast companions at small angular separation appears feasible in conventional direct images using the self-calibration properties of interferometric observable quantities.

Medium-resolution integral-field spectroscopy for high-contrast exoplanet imaging

Context. Angular differential imaging (ADI) and spectral differential imaging (SDI) are well-established high-contrast imaging techniques, but their application is challenging for companions at small

First light of the Gemini Planet Imager

Observations ofBeta Pictoris clearly detect the planet, Beta Pictoris b, in a single 60-s exposure with minimal postprocessing, and fitting the Keplerian orbit of Beta Pic b using the new position together with previous astrometry gives a factor of 3 improvement in most parameters over previous solutions.

Spectrally dispersed Fourier-phase analysis for redundant apertures

  • F. Martinache
  • Physics
    Astronomical Telescopes + Instrumentation
  • 2016
One can process images acquired by single telescopes using adaptve optics (AO) in a manner similar to data usually acquired with a non-redundant aperture mask. Because it relies on a linearization of

SPHERE: the exoplanet imager for the Very Large Telescope

Observations of circumstellar environments that look for the direct signal of exoplanets and the scattered light from disks have significant instrumental implications. In the past 15 years, major

Kernel-phase analysis: Aperture modeling prescriptions that minimize calibration errors

The paper first uses idealized monochromatic simulations of a non trivial aperture to illustrate the impact modeling choices have on calibration errors, and applies the outlined prescription to two distinct data-sets of images whose analysis has previously been published.

The SCExAO high contrast imager: transitioning from commissioning to science

SCExAO is the premier high-contrast imaging platform for the Subaru Telescope. It offers high Strehl ratios at near-IR wavelengths (y-K band) with stable pointing and coronagraphs with extremely

SCExAO, an instrument with a dual purpose: perform cutting-edge science and develop new technologies

The Subaru Coronagraphic Extreme Adaptive Optics instrument is an extremely modular high- contrast instrument installed on the Subaru telescope in Hawaii, and the newest addition is the 20k-pixel Microwave Kinetic Inductance Detector (MKIDS) Exoplanet Camera (MEC) that will allow for previously unexplored science and technology developments.

Molecule mapping of HR8799b using OSIRIS on Keck

Context. In 2015, Barman et al. (ApJ, 804, 61) presented detections of absorption from water, carbon monoxide, and methane in the atmosphere of the directly imaged exoplanet HR8799b using integral