Results 111 to 120 of about 425,590 (288)
Zonal Flow and Self-regulating Mechanism in a Hydrodynamic Disk
The Astrophysical JournalThis study addresses key aspects of momentum transport in hydrodynamic disks, which is critical for understanding zonal flow generation and turbulence in compressible hydrodynamic disks.
Chang-Chun Chen +3 more
doaj +1 more source
Planet formation in stellar binaries I: planetesimal dynamics in massive protoplanetary disks [PDF]
, 2014 About $20\%$ of exoplanets discovered by radial velocity surveys reside in stellar binaries. To clarify their origin one has to understand the dynamics of planetesimals in protoplanetary disks within binaries. The standard description, accounting for only gas drag and gravity of the companion star has been challenged recently, as the gravity of the ...
arxiv +1 more source
Consistent Dust and Gas Models for Protoplanetary Disks. III. Models for Selected Objects from the FP7 DIANA Project [PDF]
Publications of the Astronomical Society of the Pacific, 2018 The European FP7 project DIANA has performed a coherent analysis of a large set of observational data of protoplanetary disks by means of thermo-chemical disk models.
P. Woitke +23 more
semanticscholar +1 more source
Meteoritics &Planetary Science, Volume 60, Issue 2, Page 190-205, February 2025.Abstract The alignment of non‐spherical “flattened” chondrules into a petrofabric is a common feature of hydrated carbonaceous chondrite meteorites. This texture can form as a result of impacts at peak shock pressures exceeding 10 GPa. However, many carbonaceous chondrites with petrofabrics are unshocked.
Laura E. Jenkins +6 more
wiley +1 more source
Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
The Astrophysical JournalMillimeter and submillimeter observations of continuum linear dust polarization provide insight into dust grain growth in protoplanetary disks, which are the progenitors of planetary systems.
Rachel E. Harrison +6 more
doaj +1 more source
The Astrophysical Journal, 2023 Protoplanetary disks exhibit a vertical gradient in angular momentum, rendering them susceptible to the vertical shear instability (VSI). The most important condition for the onset of this mechanism is a short timescale of thermal relaxation (≲0.1 ...
Thomas Pfeil +2 more
doaj +1 more source
Global Simulations of the Inner Regions of Protoplanetary Disks with Comprehensive Disk Microphysics [PDF]
, 2017 The gas dynamics of weakly ionized protoplanetary disks (PPDs) are largely governed by the coupling between gas and magnetic fields, described by three non-ideal magnetohydrodynamical (MHD) effects (Ohmic, Hall, ambipolar).
X. Bai
semanticscholar +1 more source
Rings and Gaps in Protoplanetary Disks: Planets or Snowlines? [PDF]
Astrophysical Journal, 2018 High-resolution Atacama Large Millimeter/submillimeter Array observations of protoplanetary disks have revealed that many, if not all, primordial disks consist of ring-like dust structures.
N. van der Marel +2 more
semanticscholar +1 more source
PROTOPLANETARY DISK STRUCTURES IN OPHIUCHUS [PDF]
The Astrophysical Journal, 2009 ApJ in press: 51 pages, 13 ...
Sean M. Andrews +4 more
openaire +3 more sources
Meteoritics &Planetary Science, Volume 60, Issue 2, Page 247-272, February 2025.Abstract Calcium‐aluminum‐rich inclusions (CAIs) are the first objects that formed in the solar accretion disk and therefore provide valuable insights into the evolution of the early solar system. A long‐standing question regarding this earliest formative period relates to the storage of CAIs in the 1–4 Myr time period between their formation and later
P. Ghaznavi +3 more
wiley +1 more source