On the secular behavior of dust particles in an eccentric protoplanetary disk with an embedded massive gas giant planet

Abstract

We investigate the dust velocity and spatial distribution in an eccentric protoplanetary disk under the secular gravitational perturbation of an embedded planet of about 5 Jupiter masses. We first employ the FARGO code to obtain the two-dimensional density and velocity profiles of the eccentric gas disk exterior to the gap opened up by the embedded planet in the quasi-steady state. We then apply the secular perturbation theory and incorporate the gas drag to estimate the dust velocity and density on the secular timescale. The dust-to-gas ratio of the unperturbed disk is simply assumed to be 0.01. In our fiducial disk model with the planet at 5 AU, we find that 0.01 cm- to 1 m-sized dust particles are well coupled to the gas. Consequently, the particles behave similarly to the gas and exhibit asymmetric dynamics as a result of eccentric orbits. The dust surface density is enhanced around the apocenter of the disk. However, for the case of a low-density gaseous disk (termed "transition disk" henceforth in this work) harboring the planet at 100 AU, the azimuthal distributions of dust of various sizes can deviate significantly. Overall, the asymmetric structure exhibits a phase correlation between the gas velocity fields and dust density distribution. Therefore, our study potentially provides a reality check as to whether an asymmetric disk gap detected at sub-millimeter and centimeter wavelengths is a signpost of a massive gas giant planet.

36 pages, 13 figures, Accepted for publication in The Astrophysical Journal

References in corpus (11)

• Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations
• Dust Filtration by Planet-Induced Gap Edges: Implications for Transitional Disks
• Dust filtration at gap edges: Implications for the spectral energy distributions of discs with embedded planets
• Dust flow in gas disks in the presence of embedded planets
• The circumstellar disk of AB Aurigae: evidence for envelope accretion at late stages of star formation?
• Planetesimal and gas dynamics in binaries
• The dynamics of eccentric accretion discs in superhump systems
• The dynamical role of the circumplanetary disc in planetary migration
• Why are there so few hot Jupiters?
• Mean-motion resonances in satellite-disc interactions
• The formation of an eccentric gap in a gas disk by a planet in an eccentric orbit

Cited by in corpus (13)

• Dust Evolution and the Formation of Planetesimals
• The Eccentric Cavity, Triple Rings, Two-Armed Spirals, and Double Clumps of the MWC 758 Disk
• Particle Concentration At Planet Induced Gap Edges and Vortices: I. Inviscid 3-D Hydro Disks
• Dust Trapping by Vortices in Transitional Disks: Evidence for Non-ideal MHD Effects in Protoplanetary Disks
• Asymmetric transition disks: Vorticity or eccentricity?
• Dust growth and evolution in protoplanetary disks
• Gas and dust structures in protoplanetary disks hosting multiple planets
• Eccentric Modes in Disks With Pressure and Self-Gravity
• Kinematical signs of dust trapping and feedback in a local pressure bump in the protoplanetary disk around HD 142527 revealed with ALMA
• Long-Lived Eccentricities in Accretion Disks
• Kinematical Constraint on Eccentricity in the Protoplanetary Disk MWC 758 with ALMA
• Formation of inner planets in the presence of a Cold Jupiter: orbital evolution and relative velocities of planetesimals
• Planetesimal Dynamics in the Presence of a Giant Planet II: Dependence on Planet Mass and Eccentricity