1D accretion discs around eccentric planets: observable near-infrared variability

Abstract

I present the results of 1D models of circumplanetary discs around planets on eccentric orbits. I use a classical viscous heating model to calculate emission fluxes at the wavelengths targeted by the NIRCam instrument on JWST, and compare the variability of this signal with the published NIRCam sensitivity specifications. This variability is theoretically detectable by JWST for a sufficiently viscous disc ($\alpha \sim 10^{-2}$) around a sufficiently eccentric planet ($e\sim 0.1-0.2$) and if the circumplanetary disc accretes material from its parent disc at a rate $\dot{M}\gtrsim 10^{-7}{\mathrm{M}}_{\odot }{\mathrm{yr}}^{-1}$. I discuss the limitations of the models used, and the implications of the result for probing the effectiveness of disc interactions for growing a planet's orbital eccentricity.

arXiv comment5 pages, 4 figures, submitted to MNRAS; replaced with version accepted for publication

References in corpus (29)

• Spectral Energy Distributions of T Tauri Stars With Passive Circumstellar Disks
• On the width and shape of gaps in protoplanetary disks
• Dynamics of Protoplanetary Disks
• CSI 2264: Simultaneous optical and infrared light curves of young disk-bearing stars in NGC 2264 with CoRoT and Spitzer-- evidence for multiple origins of variability
• Eccentricity Evolution for Planets in Gaseous Disks
• YSOVAR: the first sensitive, wide-area, mid-IR photometric monitoring of the ONC
• Accretion of Jupiter-mass Planets in the Limit of Vanishing Viscosity
• Limiting eccentricity of sub-parsec massive black hole binaries surrounded by self-gravitating gas discs
• Accreting Circumplanetary Disks: Observational Signatures
• Circumplanetary disc properties obtained from radiation hydrodynamical simulations of gas accretion by protoplanets
• Evolution of Giant Planets in Eccentric Disks
• The Hot Inner Disk of FU Ori
• CSI 2264: Characterizing Accretion-Burst Dominated Light Curves for Young Stars in NGC 2264
• Saturation of the corotation resonance in a gaseous disk
• Tidal Truncation of Circumplanetary Discs
• Gas accretion onto planetary cores: three-dimensional self-gravitating radiation hydrodynamical calculations
• Global hydromagnetic simulations of a planet embedded in a dead zone: gap opening, gas accretion and formation of a protoplanetary jet
• On the Observability of Giant Protoplanets in Circumstellar Disks
• Young Stellar Object Variability (YSOVAR): Long Timescale Variations in the Mid-Infrared
• Searching for circumplanetary disks around LkCa 15
• A limit on eccentricity growth from global 3-D simulations of disc-planet interactions
• On the saturation of corotation resonances: a numerical study
• Mid-Infrared Variability of protostars in IC 1396A
• Accretion in giant planet circumplanetary disks
• Accretion Outbursts in Circumplanetary Disks
• Shedding Light on the Eccentricity Valley: Gap Heating and Eccentricity Excitation of Giant Planets in Protoplanetary Disks
• Dead Zones In Circumplanetary Discs as Formation Sites For Regular Satellites
• Linear Corotation Torques in Non-Barotropic Disks
• The effects of viscosity on the circumplanetary disks

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