Accès ouvert
2026
preprint
OpenAlex
A. Ruzza, Giuseppe Lodato, Giovanni Rosotti, Philip J. Armitage et autres
The exoALMA large program provided an unprecedented view of the morphology and kinematics of 15 circumstellar disks, offering a biased but homogenous and well-characterized sample for population-level analysis. Continuum observations revealed numerous dust substructures, known to be potential signatures of embedded planets. …
Accès ouvert
2026
article
OpenAlex
Andrés F. Izquierdo, Jaehan Bae, Stefano Facchini, Ewine F. van Dishoeck et autres
The exoALMA Large Program has revealed a wealth of substructures in the dust and molecular line emission of several protoplanetary discs, suggesting that planet formation may unfold within highly dynamic environments. Using synthetic observations of planet-disc interactions and disc instabilities, we demonstrate …
Accès ouvert
2026
article
OpenAlex
Myriam Benisty, Andrés F. Izquierdo, Jochen Stadler, Maria Galloway-Sprietsma et autres
Vertical gas flows, such as winds and meridional circulations, are natural outcomes of protoplanetary disk processes and play a critical role in the earliest stages of planet formation. We analyze vertical gas motions in 14 disks as part of the exoALMA Large …
Accès ouvert
2026
article
OpenAlex
Misato Fukagawa, Andrés F. Izquierdo, Jochen Stadler, Lisa Wölfer et autres
Protoplanetary disks are the birthplaces of planetary systems, and deviations from Keplerian rotation imprinted in disk gas kinematics serve as key tracers of physical processes and the presence of protoplanets within disks. Using the the CO (J=3-2) data from the exoALMA Large …
Accès ouvert
2023
preprint
OpenAlex
Isabel Angelo, Gaspard Duchêne, Karl R. Stapelfeldt, Zoie Telkamp et autres
The structure of protoplanetary disks plays an essential role in planet formation. Disks that are highly inclined, or ''edge-on'', are of particular interest since their geometry provides a unique opportunity to study the disk's vertical structure and radial extent. Candidate edge-on protoplanetary …
Accès ouvert
2021
article
OpenAlex
Garima Singh, T. Bhowmik, Anthony Boccaletti, P. Thébault et autres
We obtained polarimetric differential imaging of a gas-rich debris disk around HD 141569A with SPHERE in the H-band to compare the scattering properties of the innermost ring at 44 au with former observations in total intensity with the same instrument. In polarimetric …