Hydrodynamic Simulations of the Interaction between Giant Stars and Planets

Abstract

We present the results of hydrodynamic simulations of the interaction between a 10 Jupiter mass planet and a red or asymptotic giant branch stars, both with a zero-age main sequence mass of 3.5 $M_{\odot }$. Dynamic in-spiral timescales are of the order of few years and a few decades for the red and asymptotic giant branch stars, respectively. The planets will eventually be destroyed at a separation from the core of the giants smaller than the resolution of our simulations, either through evaporation or tidal disruption. As the planets in-spiral, the giant stars' envelopes are somewhat puffed up. Based on relatively long timescales and even considering the fact that further in-spiral should take place before the planets are destroyed, we predict that the merger would be difficult to observe, with only a relatively small, slow brightening. Very little mass is unbound in the process. These conclusions may change if the planet's orbit enhances the star's main pulsation modes. Based on the angular momentum transfer, we also suspect that this star-planet interaction may be unable to lead to large scale outflows via the rotation-mediated dynamo effect of Nordhaus and Blackman. Detectable pollution from the destroyed planets would only result for the lightest, lowest metallicity stars. We furthermore find that in both simulations the planets move through the outer stellar envelopes at Mach-3 to Mach-5, reaching Mach-1 towards the end of the simulations. The gravitational drag force decreases and the in-spiral slows down at the sonic transition, as predicted analytically.

arXiv commentAccepted for publication in MNRAS

References in corpus (35)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Common Envelope Evolution: Where we stand and how we can move forward
• Enzo: An Adaptive Mesh Refinement Code for Astrophysics
• Dynamical Friction in a Gaseous Medium
• A correlation between the heavy element content of transiting extrasolar planets and the metallicity of their parent stars
• The Orbital Evolution of Gas Giant Planets around Giant Stars
• The elemental composition of the Sun II. The iron group elements Sc to Ni
• An AMR Study of the Common Envelope Phase of Binary Evolution
• Foretellings of Ragnarök: World-engulfing Asymptotic Giants and the Inheritance of White Dwarfs
• Low-Mass Binary Induced Outflows from Asymptotic Giant Branch Stars
• Atmosphere, Interior, and Evolution of the Metal-Rich Transiting Planet HD 149026b
• Simulating the Common Envelope Phase of a Red Giant Using SPH and Uniform Grid Codes
• Can Planets survive Stellar Evolution?
• On the alpha formalism for the common envelope interaction
• Can Planets Influence the Horizontal Branch Morphology?
• Double Core Evolution X. Through the Envelope Ejection Phase
• The Interaction of Stellar Objects within a Common Envelope
• On the Orbits of Low-mass Companions to White Dwarfs and the Fates of the Known Exoplanets
• Do most planetary nebulae derive from binaries? I Population synthesis model of the galactic planetary nebula population produced by singlestars and binaries
• Asymmetric Accretion Flows within a Common Envelope
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• Recombination energy in double white dwarf formation
• The giant planet orbiting the cataclysmic binary DP Leonis
• A Detailed Dynamical Investigation of the Proposed QS Virginis Planetary System
• Dynamical Opacity-Sampling Models of Mira Variables. II: Time-Dependent Atmospheric Structure and Observable Properties of 4 M-Type Model Series
• The Role of Planet Accretion in Creating the Next Generation of Red Giant Rapid Rotators
• The Structure of Exoplanets
• Hydrodynamic Simulations of the Interaction between an AGB Star and a Main Sequence Companion in Eccentric Orbits
• Dynamical Opacity-Sampling Models of Mira Variables. I: Modelling Description and Analysis of Approximations
• A Giant Planet Around a Metal-poor Star of Extragalactic Origin
• Mergerburst Transients of Brown Dwarfs with Exoplanets
• Kepler detection of a new extreme planetary system orbiting the subdwarf-B pulsator KIC10001893
• On the survival of brown dwarfs and planets engulfed by their giant host star
• Timing variations in the secondary eclipse of NN Ser

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