“Signatures of the Vertical Shear Instability in Planet-forming Disk CO Kinematics”

 “Signatures of the Vertical Shear Instability in Planet-forming Disk CO Kinematics”



The turbulent gas motions in planet-forming disks are crucial for their evolution and significantly affect the planet formation process. Recent (sub-)millimeter observations show evidence of weak turbulence in the disks' outer regions. However, the detailed physical mechanism of turbulence in these outer regions remains uncertain. The vertical shear instability (VSI) is a promising candidate mechanism to produce turbulence in the outer parts of the disks. 

By performing global 3D hydrodynamical simulations of a VSI-unstable disk, and post-processing them to produce synthetic ALMA observations, we studied the non-Keplerian kinematic signatures of the VSI that could be observable with the ALMA interferometer. Characterizing these signatures in high-resolution observations can confirm that the VSI operates in the outer regions of protoplanetary disks.

During my talk, I will first summarize the efforts to study the kinematic signatures of protoplanetary disks. Then, I will present our work predicting kinematical signatures produced by the VSI, with and without embedded massive planets in the disk.


Transmisión vía Youtube en: bit.ly/YouTube_ICF



Participante: Marcelo Barraza-Alfaro, Ph.D candidate

Institución: Max Planck Institute for Astrophysics, Germany

Fecha y hora: Este evento terminó el Miércoles, 08 de Diciembre de 2021