EFFECTS OF DUST FEEDBACK ON VORTICES IN PROTOPLANETARY DISKS

Journal Article · Mon Nov 10 04:00:00 EST 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/795/2/L39· OSTI ID:22364506

Fu, Wen; Liang, Edison ^[1]; Li, Hui; Li, Shengtai ^[2]; Lubow, Stephen ^[3]

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1. Department of Physics and Astronomy, Rice University, Houston, TX 77005 (United States)
2. Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)
3. Space Telescope Science Institute, Baltimore, MD 21218 (United States)

We carried out two-dimensional, high-resolution simulations to study the effect of dust feedback on the evolution of vortices induced by massive planets in protoplanetary disks. Various initial dust to gas disk surface density ratios (0.001-0.01) and dust particle sizes (Stokes number 4 × 10{sup –4}-0.16) are considered. We found that while dust particles migrate inward, vortices are very effective at collecting them. When dust density becomes comparable to gas density within the vortex, a dynamical instability is excited and it alters the coherent vorticity pattern and destroys the vortex. This dust feedback effect is stronger with a higher initial dust/gas density ratio and larger dust grain. Consequently, we found that the disk vortex lifetime can be reduced up to a factor of 10. We discuss the implications of our findings on the survivability of vortices in protoplanetary disks and planet formation.

• OSTI ID: 22364506
• Journal Information: Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters Journal Issue: 2 Vol. 795; ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ACCRETION DISKS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
COSMIC DUST
DENSITY
FEEDBACK
HYDRODYNAMICS
INSTABILITY
PARTICLE SIZE
PLANETS
PROTOPLANETS
STOKES NUMBER
TWO-DIMENSIONAL CALCULATIONS
VORTICES