EPSC Abstracts
Vol. 18, EPSC-DPS2025-1379, 2025, updated on 09 Jul 2025
https://doi.org/10.5194/epsc-dps2025-1379
EPSC-DPS Joint Meeting 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Exploration of the inner region of the system HD 142527
Thi My Hanh Tran1,2, Maud Langlois1,2, and Olivier Flasseur1,2
Thi My Hanh Tran et al.
  • 1Centre de Recherche Astrophysique de Lyon, France (thi-my-hanh.tran@univ-lyon1.fr)
  • 2Universite Claude Bernard Lyon 1, CRAL UMR5574, ENS de Lyon, CNRS, Villeurbanne, F-69622, France

HD 142527 is a well-studied Herbig Ae/Be star surrounded by a transitional disk with a large dust cavity, spiral structures, and a known accreting dwarf companion. Despite extensive observations, the system’s inner regions remain poorly understood, particularly regarding their influence on disk morphology and planet formation. Aiming to probe the inner region of HD 142527, we use new dedicated post-processing methods on high-contrast imaging data of VLT/SPHERE instruments at visible and near-infrared wavelengths in order to identify previously undetected companion(s) and/or structures and explore their potential role in shaping the disk’s morphology and evolution. We report on the discovery of new inner disk features. These new features could be dynamically linked to the companions, suggesting ongoing interactions that influence the disk’s structure. We will present our study of these inner features and their dynamical link with the known and additional companions in this system to better understand the system’s architecture and evolution.

How to cite: Tran, T. M. H., Langlois, M., and Flasseur, O.: Exploration of the inner region of the system HD 142527, EPSC-DPS Joint Meeting 2025, Helsinki, Finland, 7–12 Sep 2025, EPSC-DPS2025-1379, https://doi.org/10.5194/epsc-dps2025-1379, 2025.