Matthew D. Kenworthy
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View article: Reproduction package for the paper "Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves"
Reproduction package for the paper "Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves" Open
This is a basic reproduction package for the paper "Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves" by Sutlieff et al. (2025). It aims to provide the most im…
View article: Reproduction package for the paper "Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves"
Reproduction package for the paper "Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves" Open
This is a basic reproduction package for the paper "Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves" by Sutlieff et al. (2025). It aims to provide the most im…
View article: Chasing the storm: investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves
Chasing the storm: investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves Open
Substellar companions such as exoplanets and brown dwarfs exhibit changes in brightness arising from top-of-atmosphere inhomogeneities, providing insights into their atmospheric structure and dynamics. This variability can be measured in t…
View article: New Orbital Constraints for YSES 1 b and HR 2562 B from High-Precision Astrometry and Planetary Radial Velocities<sup>∗</sup>
New Orbital Constraints for YSES 1 b and HR 2562 B from High-Precision Astrometry and Planetary Radial Velocities<sup>∗</sup> Open
We present new VLTI/GRAVITY astrometry and updated orbit fits for the directly imaged companions YSES 1 b and HR 2562 B, substellar objects straddling the planet–brown-dwarf boundary. Using high-precision astrometry, radial velocity data, …
View article: Wide Separation Planets in Time (WISPIT): Discovery of a Gap H<i>α</i> Protoplanet WISPIT 2b with MagAO-X
Wide Separation Planets in Time (WISPIT): Discovery of a Gap H<i>α</i> Protoplanet WISPIT 2b with MagAO-X Open
Excellent ( 21 ± 0 41) likely clearing a dust-free gap between the two brightest dust rings in the transitional disk. Our signal-to-noise ratio of 12.5 detection gave an H α ASDI contrast of (6.5 ± 0.5) × 10 −4 and an H α line fl…
View article: WIde Separation Planets In Time (WISPIT): A Gap-clearing Planet in a Multi-ringed Disk around the Young Solar-type Star WISPIT 2
WIde Separation Planets In Time (WISPIT): A Gap-clearing Planet in a Multi-ringed Disk around the Young Solar-type Star WISPIT 2 Open
In the past decades, several thousand exoplanet systems have been discovered around evolved, main-sequence stars, revealing a wide diversity in their architectures. To understand how the planet formation process can lead to vastly differen…
View article: Adding colour to the Zernike wavefront sensor: Advantages of including multi-wavelength measurements for wavefront reconstruction
Adding colour to the Zernike wavefront sensor: Advantages of including multi-wavelength measurements for wavefront reconstruction Open
Context . To directly image Earth-like planets, contrast levels of 10 −8 −10 −10 are required. The next generation of instruments will need wavefront control below the nanometer level to achieve these goals. The Zernike wavefront sensor (Z…
View article: YSES 2b is a background star
YSES 2b is a background star Open
Aims . We wish to confirm the nature of YSES 2b, a purportedly faint companion of the young star YSES 2. Methods . We used on-sky observations from SPHERE and GRAVITY to measure the astrometric position of 2b with respect to the star YSES …
View article: Peculiar rainbows in Saturn’s E ring: Uncovering luminous bands near Enceladus
Peculiar rainbows in Saturn’s E ring: Uncovering luminous bands near Enceladus Open
International audience
View article: A planetary-mass candidate imaged in the Young Suns Exoplanet Survey
A planetary-mass candidate imaged in the Young Suns Exoplanet Survey Open
Context . Directly imaged exoplanets in wide orbits pose a challenge to current gas giant formation theories, as they need to form quickly and acquire enough material before the disc dissipates. These processes cannot be accommodated by in…
View article: High-Contrast Coronagraphy
High-Contrast Coronagraphy Open
Imaging terrestrial exoplanets around nearby stars is a formidable technical challenge, requiring the development of coronagraphs to suppress the stellar halo of diffracted light at the location of the planet. In this review, we discuss th…
View article: Upper limits on CN from exocomets transiting <i>β</i> Pictoris
Upper limits on CN from exocomets transiting <i>β</i> Pictoris Open
Context . The young (23 Myr) nearby (19.4 pc) star β Pictoris hosts an edge-on debris disk with two gas giant exoplanets in orbit around it. Many transient absorption features have been detected in the rotationally broadened stellar lines,…
View article: The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems. III. Aperture Masking Interferometric Observations of the Star HIP 65426 at 3.8 <i>μ</i>m
The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems. III. Aperture Masking Interferometric Observations of the Star HIP 65426 at 3.8 <i>μ</i>m Open
We present aperture masking interferometry (AMI) observations of the star HIP 65426 at 3.8 μ m, as part of the JWST Direct Imaging Early Release Science program, obtained using the Near Infrared Imager and Slitless Spectrograph instrument.…
View article: A benchmark companion at the hydrogen-burning limit imaged in the core cluster of the Fornax-Horologium association
A benchmark companion at the hydrogen-burning limit imaged in the core cluster of the Fornax-Horologium association Open
Context. Low-mass stellar and substellar companions are indispensable objects for verifying evolutionary models that transition from low-mass stars to planets. Their formation is likely also affected by the surrounding stellar environment.…
View article: Deep imaging of three accelerating stars using SHARK-NIR and LMIRCam at LBT
Deep imaging of three accelerating stars using SHARK-NIR and LMIRCam at LBT Open
The combination of detection techniques enhances our ability to identify companions orbiting nearby stars. We employed high-contrast imaging to constrain mass and separation of possible companions responsible for the significant proper mot…
View article: Population of giant planets around B stars from the first part of the BEAST survey
Population of giant planets around B stars from the first part of the BEAST survey Open
Context. Exoplanets form from circumstellar protoplanetary disks whose fundamental properties (notably their extent, composition, mass, temperature, and lifetime) depend on the host star properties, such as their mass and luminosity. B sta…
View article: Giant planets population around B stars from the first part of the BEAST survey
Giant planets population around B stars from the first part of the BEAST survey Open
Exoplanets form from circumstellar protoplanetary discs whose fundamental properties (notably their extent, composition, mass, temperature and lifetime) depend on the host star properties, such as their mass and luminosity. B-stars are amo…
View article: The MIRI Exoplanets Orbiting White dwarfs (MEOW) Survey: Mid-infrared Excess Reveals a Giant Planet Candidate around a Nearby White Dwarf
The MIRI Exoplanets Orbiting White dwarfs (MEOW) Survey: Mid-infrared Excess Reveals a Giant Planet Candidate around a Nearby White Dwarf Open
The MIRI Exoplanets Orbiting White dwarfs survey is a cycle 2 JWST program to search for exoplanets around dozens of nearby white dwarfs via infrared excess and direct imaging. In this Letter, we present the detection of mid-infrared exces…
View article: The MIRI Exoplanets Orbiting White Dwarfs (MEOW) Survey: Mid-Infrared Excess Reveals a Giant Planet Candidate around a Nearby White Dwarf
The MIRI Exoplanets Orbiting White Dwarfs (MEOW) Survey: Mid-Infrared Excess Reveals a Giant Planet Candidate around a Nearby White Dwarf Open
The MIRI Exoplanets Orbiting White dwarfs (MEOW) Survey is a cycle 2 JWST program to search for exoplanets around dozens of nearby white dwarfs via infrared excess and direct imaging. In this paper, we present the detection of mid-infrared…
View article: The VLT/ERIS vortex coronagraph: design, pointing control, and on-sky performance
The VLT/ERIS vortex coronagraph: design, pointing control, and on-sky performance Open
Instrumentation
View article: ASASSN-21js: A multi-year transit of a ringed disc
ASASSN-21js: A multi-year transit of a ringed disc Open
Aims. The early-type star ASASSN-21js started to fade in 2021, as was detected by the All Sky Automated Survey for Supernovae, undergoing a multi-year eclipse that is still underway. We interpret this event as being due to a structured dis…
View article: The VLT/ERIS vortex coronagraph: design, pointing control, and on-sky performance
The VLT/ERIS vortex coronagraph: design, pointing control, and on-sky performance Open
The Enhanced Resolution Imager and Spectrograph (ERIS) is the new near-infrared instrument at the VLT-UT4. ERIS replaces and extends the observational capabilities formerly provided by SINFONI and NACO: integral field spectroscopy at 1 - 2…
View article: METIS high-contrast imaging: from final design to manufacturing and testing
METIS high-contrast imaging: from final design to manufacturing and testing Open
The Mid-infrared ELT Imager and Spectrograph (METIS) is one of the first-generation scientific instruments for the ELT, built under the supervision of ESO by a consortium of research institutes across and beyond Europe. Designed to cover t…
View article: Detailed study of a rare hyperluminous rotating disk in an Einstein ring 10 billion years ago
Detailed study of a rare hyperluminous rotating disk in an Einstein ring 10 billion years ago Open
Hyperluminous infrared galaxies (HyLIRGs) are the rarest and most extreme starbursts and found only in the distant Universe ( z ≳ 1). They have intrinsic infrared (IR) luminosities L IR ≥ 10 13 L ⊙ and are commonly found to be major merger…
View article: Direct detectability of tidally heated exomoons by photometric orbital modulation
Direct detectability of tidally heated exomoons by photometric orbital modulation Open
Aims. We investigate whether volcanic exomoons can be detected in thermal wavelength light curves due to their phase variability along their orbit. The method we use is based on the photometric signal variability that volcanic features or …
View article: Direct detectability of tidally heated exomoons by photometric orbital modulation
Direct detectability of tidally heated exomoons by photometric orbital modulation Open
Aims . We investigate whether volcanic exomoons can be detected in thermal wavelength light curves due to their phase variability along their orbit. The method we use is based on the photometric signal variability that volcanic features or…
View article: METIS high-contrast imaging: from final design to manufacturing and testing
METIS high-contrast imaging: from final design to manufacturing and testing Open
Instrumentation
View article: High contrast at short separation with VLTI/GRAVITY: Bringing Gaia companions to light
High contrast at short separation with VLTI/GRAVITY: Bringing Gaia companions to light Open
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 the first direct confirmation of companions previously det…