Dynamical friction-driven orbital circularisation in rotating discs: a semi-analytical description

Abstract

We present and validate a novel semi-analytical approach to study the effect of dynamical friction on the orbits of massive perturbers in rotating stellar discs. We find that dynamical friction efficiently circularises the orbit of co-rotating perturbers, while it constantly increases the eccentricity of counter-rotating ones until their angular momenta reverse, then once again promoting circularisation. Such "drag toward circular corotation" could shape the distribution of orientations of kinematically decoupled cores in disc galaxies, naturally leading to the observed larger fraction of co-rotating cores.

7 pages, 3 figures, accepted for publication in MNRAS

References in corpus (39)

• A Universal Density Profile from Hierarchical Clustering
• The cosmological simulation code GADGET-2
• Rotating Nuclear Rings and Extreme Starbursts in Ultraluminous Galaxies
• GIZMO: A New Class of Accurate, Mesh-Free Hydrodynamic Simulation Methods
• The ATLAS3D project - III. A census of the stellar angular momentum within the effective radius of early-type galaxies: unveiling the distribution of Fast and Slow Rotators
• The ATLAS3D project - II. Morphologies, kinemetric features and alignment between photometric and kinematic axes of early-type galaxies
• Formation of gas disks in merging galaxies
• Rapid Formation of Supermassive Black Hole Binaries in Galaxy Mergers with Gas
• The Atlas3D project - X. On the origin of the molecular and ionised gas in early-type galaxies
• Supermassive black hole binaries in gaseous and stellar circumnuclear discs: orbital dynamics and gas accretion
• The Quest for Dual and Binary Supermassive Black Holes: A Multi-Messenger View
• The SAURON project - VIII. OASIS/CFHT integral-field spectroscopy of elliptical and lenticular galaxy centres
• Gravitational Recoil From Accretion-Aligned Black-Hole Binaries
• Dual black holes in merger remnants. II: spin evolution and gravitational recoil
• Massive black hole binaries: dynamical evolution and observational signatures
• LISA double black holes: Dynamics in gaseous nuclear discs
• To Circularize or Not to Circularize? -- Orbital Evolution of Satellite Galaxies
• Growing massive black holes through super-critical accretion of stellar-mass seeds
• Mismatch and Misalignment: Dark Haloes and Satellites of Disc Galaxies
• Growing Massive Black Hole Pairs in Minor Mergers of Disk Galaxies
• An iterative method for the construction of N-body galaxy models in collisionless equilibrium
• Massive Black Hole binaries in gas-rich galaxy mergers; multiple regimes of orbital decay and interplay with gas inflows
• Dual black holes in merger remnants. I: linking accretion to dynamics
• Massive black hole pairs in clumpy, self-gravitating circumnuclear disks: stochastic orbital decay
• Massive black hole binary eccentricity in rotating stellar systems
• Shocks and angular momentum flips: a different path to feeding the nuclear regions of merging galaxies
• Post-Newtonian Evolution of Massive Black Hole Triplets in Galactic Nuclei: I. Numerical Implementation and Tests
• Orbital Decay of Supermassive Black Hole Binaries in Clumpy Multiphase Merger Remnants
• Dynamical friction of massive objects in galactic centres
• On the rotation of nuclear star clusters formed by cluster-inspirals
• A semi-analytic dynamical friction model for cored galaxies
• Large scale inhomogeneity and local dynamical friction
• A Semi-Analytic dynamical friction model that reproduces core stalling
• Supermassive black hole pairs in clumpy galaxies at high redshift: delayed binary formation and concurrent mass growth
• The Pairing of Accreting Massive Black Holes in Multiphase Circumnuclear Disks: the Interplay between Radiative Cooling, Star Formation, and Feedback Processes
• The birth of a supermassive black hole binary
• Super massive black holes in star forming gaseous circumnuclear discs
• Evolution Of Binary Supermassive Black Holes In Rotating Nuclei
• The Black Hole and Central Stellar Population of MCG--6-30-15

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• Dynamical evolution of massive perturbers in realistic multi-component galaxy models I: implementation and validation
• Dynamics of supermassive black hole triples in the ROMULUS25 cosmological simulation
• Dynamical evolution of massive black hole pairs in the presence of spin-dependent radiative feedback
• Stellar hardening of massive black hole binaries: the impact of the host rotation
• Astrophysics with the Laser Interferometer Space Antenna
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