Pulsed Disc Accretion Driven by Hot Jupiters

Abstract

We present 2D hydrodynamical simulations of hot Jupiters orbiting near the inner edge of protoplanetary discs. We systemically explore how the accretion rate at the inner disc edge is regulated by a giant planet of different mass, orbital separation and eccentricity. We find that a massive (with planet-to-star mass ratio $\gtrsim 0.003$) eccentric ($e_p\gtrsim 0.1$) planet drives a pulsed accretion at the inner edge of the disc, modulated at one or two times the planet's orbital frequency. The amplitude of accretion variability generally increases with the planet mass and eccentricity, although some non-monotonic dependences are also possible. Applying our simulation results to the T Tauri system CI Tau, where a young hot Jupiter candidate has been detected, we show that the observed luminosity variability in this system can be explained by pulsed accretion driven by an eccentric giant planet.

arXiv comment10 pages, 12 figures, submitted to MNRAS

References in corpus (31)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Astropy: A Community Python Package for Astronomy
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• The PLUTO Code for Adaptive Mesh Computations in Astrophysical Fluid Dynamics
• A comparative study of disc-planet interaction
• An Eccentric Circumbinary Accretion Disk and the Detection of Binary Massive Black Holes
• Mass Flow and Accretion through gaps in Accretion Discs
• Eccentricity Evolution for Planets in Gaseous Disks
• Accretion into the Central Cavity of a Circumbinary Disk
• Disk eccentricity and embedded planets
• Hydrodynamics of circumbinary accretion: Angular momentum transfer and binary orbital evolution
• Viscous Hydrodynamics Simulations of Circumbinary Accretion Discs: Variability, Quasi-Steady State, and Angular Momentum Transfer
• Evolution of Giant Planets in Eccentric Disks
• Saturation of the corotation resonance in a gaseous disk
• A Candidate Young Massive Planet in Orbit around the Classical T Tauri Star CI Tau
• Pulsed Accretion onto Eccentric and Circular Binaries
• Periodic accretion from a circumbinary disk in the young binary UZ Tau E
• Eccentricity evolution during planet-disc interaction
• Growth of eccentric modes in disc-planet interactions
• Theory of Disk Accretion onto Magnetic Stars
• Pulsed Accretion in a Variable Protostar
• Curved walls: Grain growth, settling, and composition patterns in T Tauri disk dust sublimation fronts
• Secular evolution of eccentricity in protoplanetary discs with gap-opening planets
• Why are there so few hot Jupiters?
• PDS 70: A transition disk sculpted by a single planet
• CO Detected in CI Tau b: Hot Start Implied by Planet Mass and M${}_K$
• Pulsed Accretion in the T Tauri Binary TWA 3A
• Detectability of giant planets in protoplanetary disks by CO emission lines
• K2 reveals pulsed accretion driven by the 2 Myr old hot Jupiter CI Tau b
• The origin of the eccentricity of the hot Jupiter in CI Tau
• Anomalous Accretion Activity and the Spotted Nature of the DQ Tau Binary System

Cited by in corpus (2)

• The evolution of large cavities and disc eccentricity in circumbinary discs
• CI Tau: A controlled experiment in disk-planet interaction