69 citations · 286 across the 18 of their papers we have counts for
18 papers
Distant TNO Inclinations as a Constraint on Primordial Cluster Perturbations in the Presence of Planet Nine
Avni Bansal, Ian Brunton, Konstantin Batygin +2
The Sun was almost certainly born in a stellar cluster, implying some degree of external forcing from neighboring stars during the Solar System's infancy. Published estimates of th…
A distant brown dwarf coplanar to a warm Jupiter and a hot super-Earth
Matías I. Jones, Luca Naponiello, Trifon Trifonov +21
In transiting planetary systems, in which planetary sizes are accurately determined from transit observations, the presence of transit-timing variations (TTVs), especially when com…
Timescales diagnostics for saving viscous and MHD-driven dusty discs from external photoevaporation
Gabriele Pichierri, Giovanni Rosotti, Rossella Anania +1
The evolution of protoplanetary discs is a function of their internal processes and of their environment. It is unclear if angular momentum is mainly removed viscously or by magnet…
On inertial forces (indirect terms) in problems with a central body
Aurélien Crida, Clément Baruteau, Philippine Griveaud +14
Gravitational systems in astrophysics often comprise a body -- the primary -- that far outweights the others, and which is taken as the centre of the reference frame. A fictitious…
Measuring the degree of clustering and diffusion of trans-Neptunian objects
Gabriele Pichierri, Konstantin Batygin
The outer solar system is populated by a broad aggregate of minor bodies, which occupy orbits whose dynamical character ranges from long-term stable to rapidly diffusive. We invest…
Forming the Trappist-1 system in two steps during the recession of the disc inner edge
Gabriele Pichierri, Alessandro Morbidelli, Konstantin Batygin +1
Trappist-1 hosts 7 planets where period ratios of neighbouring pairs are close to the 8:5, 5:3, 3:2, 3:2, 4:3, and 3:2 ratios in increasing distance from the star. The Laplace angl…
A recipe for eccentricity and inclination damping for partial gap opening planets in 3D disks
Gabriele Pichierri, Bertram Bitsch, Elena Lega
In a previous paper we showed that, like the migration speed, the eccentricity damping efficiency is modulated linearly by the depth of the partial gap a planet carves in the disk…
Do all gaps in protoplanetary discs host planets?
Anastasia Tzouvanou, Bertram Bitsch, Gabriele Pichierri
Following the assumption that the disc substructures observed in protoplanetary discs originate from the interaction between the disc and the forming planets embedded therein, we a…
EDEN Survey: Small Transiting Planet Detection Limits and Constraints on the Occurrence Rates for Late M Dwarfs within 15 pc
Jeremy Dietrich, Dániel Apai, Martin Schlecker +29
Earth-sized exoplanets that transit nearby, late spectral type red dwarfs will be prime targets for atmospheric characterization in the coming decade. Such systems, however, are di…
A recipe for orbital eccentricity damping in the type-I regime for low viscosity 2D-discs
Gabriele Pichierri, Bertram Bitsch, Elena Lega
It is known that gap opening depends on the disc's viscosity; however, eccentricity damping formulas have only been derived at high viscosities, ignoring partial gap opening. We ai…
Long-term tidal evolution of the TRAPPIST-1 system
R. Brasser, G. Pichierri, V. Dobos +1
The ultracool M-dwarf star TRAPPIST-1 is surrounded by seven planets configured in a resonant chain. Transit-timing variations have shown that the planets are caught in multiple th…
Emerging population of gap-opening planets around type-A stars -- Long-term evolution of the forming planets around HD 163296
Johanna Müller-Horn, Gabriele Pichierri, Bertram Bitsch
The presence of forming planets embedded in their protoplanetary disks has been inferred from the detection of multiring structures in such disks. Most of these suspected planets a…
The Kepler-223 resonance holds information on turbulence during the gas disk phase
L. -A. Hühn, G. Pichierri, B. Bitsch +1
Many fundamental physical processes regarding planetary formation in protoplanetary disks are still imperfectly understood, with an elusive phenomenon being turbulence in such disk…
The path to instability in compact multi-planetary systems
Antoine C. Petit, Gabriele Pichierri, Melvyn B. Davies +1
The dynamical stability of tightly packed exoplanetary systems remains poorly understood. While for a two-planet system a sharp stability boundary exists, numerical simulations of…
The onset of instability in resonant chains
Gabriele Pichierri, Alessandro Morbidelli
There is evidence that most chains of mean motion resonances of type : among exoplanets become unstable once the dissipative action from the gas is removed from the system,…
The role of dissipative evolution for three-planet, near-resonant extrasolar systems
Gabriele Pichierri, Konstantin Batygin, Alessandro Morbidelli
Early dynamical evolution of close-in planetary systems is shaped by an intricate combination of planetary gravitational interactions, orbital migration, and dissipative effects. W…
Capture into first-order resonances and long-term stability of pairs of equal-mass planets
Gabriele Pichierri, Alessandro Morbidelli, Aurélien Crida
Massive planets form within the lifetime of protoplanetary disks and undergo orbital migration due to planet-disk interactions. When the first planet reaches the inner edge of the…
Extreme Secular Excitation of Eccentricity Inside Mean Motion Resonance: Driving Small Bodies into Star-Grazing Orbits by Planetary Perturbations
Gabriele Pichierri, Alessandro Morbidelli, Dong Lai
It is well known that asteroids and comets fall into the Sun. Metal pollution of white dwarfs and transient spectroscopic signatures of young stars like -Pic provide growing evi…