The Evolution of Circumplanetary Disks around Planets in Wide Orbits: Implications for Formation Theory, Observations, and Moon Systems

Abstract

Using radiation hydrodynamics simulations, we explore the evolution of circumplanetary disks around wide-orbit proto-gas giants. At large distances from the star (~100 AU), gravitational instability followed by disk fragmentation can form low-mass substellar companions (massive gas giants and/or brown dwarfs) that are likely to host large disks. We examine the initial evolution of these subdisks and their role in regulating the growth of their substellar companions, as well as explore consequences of their interactions with circumstellar material. We find that subdisks that form in the context of GIs evolve quickly from a very massive state. Long-term accretion rates from the subdisk onto the proto-gas giant reach ~0.3 Jupiter masses per kyr. We also find consistency with previous simulations, demonstrating that subdisks are truncated at ~1/3 of the companion's Hill radius and are thick, with (h/r) of great than or equal to 0.2. The thickness of subdisks draws to question the use of thin-disk approximations for understanding the behavior of subdisks, and the morphology of subdisks has implications for the formation and extent of satellite systems. These subdisks create heating events in otherwise cold regions of the circumstellar disk, and serve as planet formation beacons that can be detected by instruments such as ALMA.

12 pages, 9 figures, accepted for publication in The Astrophysical Journal

References in corpus (7)

• The properties of brown dwarfs and low-mass hydrogen-burning stars formed by disc fragmentation
• The Two Modes of Gas Giant Planet Formation
• Brown dwarf formation by gravitational fragmentation of massive, extended protostellar discs
• The Thermal Regulation of Gravitational Instabilities in Protoplanetary Disks III. Simulations with Radiative Cooling and Realistic Opacities
• Properties of gravitoturbulent accretion disks
• 3D Radiative Hydrodynamics for Disk Stability Simulations: A Proposed Testing Standard and New Results
• Time-dependent CO depletion during the formation of protoplanetary disks

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