Results 41 to 50 of about 3,232,660 (177)

Coplanar Circumbinary Planets Can Be Unstable to Large Tilt Oscillations in the Presence of an Inner Polar Planet

open access: yesThe Astrophysical Journal Letters, 2023
Mutually misaligned circumbinary planets may form in a warped or broken gas disk or from later planet–planet interactions. With numerical simulations and analytic estimates we explore the dynamics of two circumbinary planets with a large mutual ...
Anna C. Childs   +4 more
doaj   +1 more source

Disk-planet interaction: theory confronts observations

open access: yes, 2018
Recent spectacular high resolution observations of gaps and ring-like structures in nearby dusty protoplanetary disks have revived interest in studying gap-opening mechanisms.
Dipierro, Giovanni   +1 more
core   +1 more source

Pursuing the planet-debris disk connection: analysis of upper limits from the Anglo-Australian planet search

open access: yes, 2015
All rights reserved.Solid material in protoplanetary disks will suffer one of two fates after the epoch of planet formation; either being bound up into planetary bodies, or remaining in smaller planetesimals to be ground into dust.
Marshall, Jonathan P.   +1 more
core   +1 more source

RAPID: A fast, high resolution, flux-conservative algorithm designed for planet–disk interactions [PDF]

open access: yesNew Astronomy, 2009
We describe a newly developed hydrodynamic code for studying accretion disk processes. The numerical method uses a finite volume, nonlinear, Total Variation Diminishing (TVD) scheme to capture shocks and control spurious oscillations. It is second-order accurate in time and space and makes use of a FARGO-type algorithm to alleviate Courant-Friedrichs ...
Mudryk, L. R., Murray, N. W.
openaire   +2 more sources

Spiral excitation in protoplanetary disks through gap-edge illumination

open access: yesAstronomy & Astrophysics
High-resolution near-infrared observations have revealed prominent two-armed spirals in a multitude of systems, such as MWC 758, SAO 206462, and V1247 Ori.
Muley Dhruv   +3 more
doaj   +1 more source

Dynamical Analysis of the HD 169142 Planet-forming Disk: Twelve Years of High-contrast Polarimetry

open access: yesThe Astronomical Journal
We present a dynamical analysis of the HD 169142 planet-forming disk based on high-contrast polarimetric imaging over a twelve-year observational period, offering insights into its disk evolution and planet–disk interactions.
Miles Lucas   +21 more
doaj   +1 more source

Observational Signatures of Planets in Protoplanetary Disks: Planet-induced Line Broadening in Gaps

open access: yesThe Astrophysical Journal, 2019
Protoplanets can produce structures in protoplanetary disks via gravitational disk–planet interactions. Once detected, such structures serve as signposts of planet formation. Here we investigate the kinematic signatures in disks produced by multi-Jupiter
Ruobing Dong   +2 more
doaj   +1 more source

The Influence of Cold Jupiters in the Formation of Close-in Planets. I. Planetesimal Transport

open access: yesThe Astrophysical Journal, 2023
The formation of a cold Jupiter (CJ) is expected to quench the influx of pebbles and the migration of cores interior to its orbit, thus limiting the efficiency of rocky planet formation either by pebble accretion and/or orbital migration.
Marcy Best   +2 more
doaj   +1 more source

Massive Debris Disks May Hinder Secular Stirring by Planetary Companions: An Analytic Proof of Concept

open access: yesThe Astrophysical Journal
Debris disks or exo-Kuiper belts, detected through their thermal or scattered emission from their dusty components, are ubiquitous around main-sequence stars.
Antranik A. Sefilian
doaj   +1 more source

INSIDE-OUT PLANET FORMATION. III. PLANET–DISK INTERACTION AT THE DEAD ZONE INNER BOUNDARY [PDF]

open access: yesThe Astrophysical Journal, 2015
ABSTRACT The Kepler mission has discovered more than 4000 exoplanet candidates. Many of them are in systems with tightly packed inner planets. Inside-out planet formation (IOPF) has been proposed as a scenario to explain these systems. It involves sequential in situ planet formation at the local pressure maximum of a retreating dead zone
Xiao Hu(胡晓)   +3 more
openaire   +2 more sources

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