Explanipedia

Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B Open

Quentin Kral, Jason Wang, Jens Kammerer, Maria Mălin, T. O. Winterhalder , et al. · 2025

Direct astrometric detection of exomoons remains unexplored. This study presents the first application of high-precision astrometry to search for exomoons around substellar companions. We investigate whether the orbital motion of the compa…

Mid-infrared evidence for iron-rich dust in the multi-ringed inner disk of HD 144432 <i>(Corrigendum)</i> Open

J. Varga, L. B. F. M. Waters, M. R. Hogerheijde, R. van Boekel, Albert Matter , et al. · 2025

Contains fulltext : 318351.pdf (Publisher’s version ) (Open Access)

Adaptive optics telemetry standard Open

Tiago Gomes, Carlos M. Correia, Lisa Bardou, Sylvain Cetre, Johann Kolb , et al. · 2024

Context . The amount of adaptive optics (AO) telemetry generated by visible/near-infrared ground-based observatories is ever greater, leading to a growing need for a standardised data exchange format to support performance analysis, AO res…

Upgrading the GRAVITY fringe tracker for GRAVITY+ Open

M. A. Nowak, S. Lacour, R. Abuter, J. Woillez, R. Dembet , et al. · 2024

Context. The GRAVITY beam-combiner at the Very Large Telescope Interferometer has recently made important contributions to many different fields of astronomy, from observations of the Galactic centre to the study of massive stars, young st…

Upgrading the GRAVITY fringe tracker for GRAVITY+: Tracking the white light fringe in the non-observable Optical Path Length state-space Open

M. Nowak, S. Lacour, R. Abuter, J. Woillez, R. Dembet , et al. · 2024

Aims. As part of the ongoing GRAVITY+ upgrade of the Very Large Telescope Interferometer infrastructure, we aim to improve the performance of the GRAVITY Fringe-Tracker, and to enable its use by other instruments. Methods. We modify the gr…

The GRAVITY young stellar object survey XIII. Tracing the time-variable asymmetric disk structure in the inner AU of the Herbig star HD98922 Open

GRAVITY Collaboration, V. Ganci, Lucas Labadie, K. Perraut, A. Wojtczak , et al. · 2024

Temporal variability in the photometric and spectroscopic properties of protoplanetary disks is common in YSO. However, evidence pointing toward changes in their morphology over short timescales has only been found for a few sources, mainl…

The GRAVITY young stellar object survey Open

V. Ganci, Lucas Labadie, K. Perraut, A. Wojtczak, J. Kaufhold , et al. · 2024

Context . Temporal variability in the photometric and spectroscopic properties of protoplanetary disks is common in young stellar objects. However, evidence pointing toward changes in their morphology over short timescales has only been fo…

Adaptive Optics Telemetry Standard: Design and specification of a novel data exchange format Open

Tiago Gomes, Carlos Correia, Lisa Bardou, Sylvain Cetre, Johann Kolb , et al. · 2023

The amount of Adaptive Optics (AO) telemetry generated by VIS/NIR ground-based observatories is ever greater, leading to a growing need for a standardised data exchange format to support performance analysis and AO research and development…

Mid-infrared evidence for iron-rich dust in the multi-ringed inner disk of HD 144432 Open

J. Varga, L. B. F. M. Waters, M. R. Hogerheijde, R. van Boekel, A. Matter , et al. · 2023

Context. Rocky planets form by the concentration of solid particles in the inner few au regions of planet-forming disks. Their chemical composition reflects the materials in the disk available in the solid phase at the time the planets wer…

Integrated turbulence parameters' estimation from NAOMI adaptive optics telemetry data Open

Nuno Morujão, Carlos Correia, Paulo Andrade, J. Woillez, P. García · 2023

Context. Monitoring turbulence parameters is crucial in high-angular resolution astronomy for various purposes, such as optimising adaptive optics systems or fringe trackers. The former systems are present at most modern observatories and …

Proof-of-concept AO telemetry data using the AOT standard format Open

Tiago Gomes, P. García, Carlos Correia, Nuno Morujão · 2023

Dataset containing a demonstration of AO telemetry data using the AOT standard format. Contains data from 5 different systems (CIAO, ERIS, GALACSI, NAOMI and PAPYRUS). The data is as follows: 4 CIAO files "CIAO#_*.fits" where # indicates t…

Proof-of-concept AO telemetry data using the AOT standard format Open

Tiago Gomes, P. García, Carlos Correia, Nuno Morujão · 2023

Dataset containing a demonstration of AO telemetry data using the AOT standard format. Contains data from 5 different systems (CIAO, ERIS, GALACSI, NAOMI and PAPYRUS). The data is as follows: 4 CIAO files "CIAO#_*.fits" where # indicates t…

Integrated turbulence parameters' estimation from NAOMI adaptive optics telemetry data Open

Nuno Morujão, Carlos Correia, Paulo Andrade, J. Woillez, P. García · 2023

Monitoring turbulence parameters is crucial in high-angular resolution astronomy for various purposes, such as optimising adaptive optics systems or fringe trackers. The former are present at most modern observatories and will remain signi…

Towards virtual access of adaptive optics telemetry data Open

Tiago Gomes, Carlos Correia, Lisa Bardou, Olivier Beltramo-Martin, Thierry Fusco , et al. · 2022

International audience

Towards virtual access of adaptive optics telemetry data Open

Tiago Gomes, Carlos Correia, Lisa Bardou, Olivier Beltramo-Martin, Thierry Fusco , et al. · 2022

Large amounts of Adaptive-Optics (AO) control loop data and telemetry are currently inaccessible to end-users. Broadening access to those data has the potential to change the AO landscape on many fronts, addressing several use-cases such a…

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