Project EOS: OBSERVATIONAL SIGNATURES OF THE VERTICAL SHEER INSTABILITY IN PLANET-FORMING DISK CO KINEMATICS

The turbulent gas motions in planet-forming disks are crucial for their evolution and are thought to affect the planet formation process significantly.

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 summarize the efforts studying the kinematic signatures of protoplanetary disks produced by the vertical shear instability, and present our predictions for upcoming ALMA observations of CO isotopologues.

NOVEMBER 15 , 2021   |   12 PM NOON  |   HYBRID (ZOOM+IN PERSON)

 

Presented by MARCELO BARRAZA, MPIA, HEIDELBERG

  • Audience: Adult
  • Genre: Space & Astronomy
  • Type: Online, Presentation

The event is finished.

Date

Nov 15 2021
Expired!

Time

12:00 pm - 1:00 pm

Cost

Free

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Location

Online

Organizer

Earths in Other Solar Systems (EOS)
Phone
(520) 621-0529
Email
eos.nexss@gmail.com
Website
https://eos-nexus.org/
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