Results 41 to 50 of about 425,590 (288)
Centimeter-sized Grains in the Compact Dust Ring around Very-low-mass Star CIDA 1
The Astronomical Journal, 2023 We examined the grain size in the dust ring encircling the 0.19 M _☉ T Tauri star CIDA 1 using the Karl G. Jansky Very Large Array at multiple centimeter wavelengths, with a spatial resolution of 0.″2–0.″9. We detected distinct partial-ring structures at
Jun Hashimoto +5 more
doaj +1 more source
Observational constraints on dust disk sizes in tidally truncated protoplanetary disks in multiple systems in the Taurus region [PDF]
Astronomy & Astrophysics, 2019 The impact of stellar multiplicity on the evolution of planet-forming disks is still the subject of debate. Here we present and analyze disk structures around ten multiple stellar systems that were included in an unbiased, high spatial resolution survey ...
C. Manara +18 more
semanticscholar +1 more source
Dust evolution in protoplanetary disks [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractWe investigate the behaviour of dust in protoplanetary disks under the action of gas drag using our 3D, two-fluid (gas+dust) SPH code. We present the evolution of the dust spatial distribution in global simulations of planetless disks as well as of disks containing an already formed planet.
Gonzalez, Jean-François +3 more
openaire +7 more sources
Gas line observations of disks*
EPJ Web of Conferences, 2015 Gas represents the bulk of the mass content in protoplanetary disks. It is therefore observations of gas that can provide important information of physical structure and chemical evolution of disks.
Dionatos Odysseas
doaj +1 more source
The Astrophysical Journal, 2023 Using self-consistent models of turbulent particle growth in an evolving protoplanetary nebula of solar composition, we find that recently proposed local metallicity and Stokes number criteria necessary for the streaming instability to generate ...
Paul R. Estrada, Orkan M. Umurhan
doaj +1 more source
Scattered Radiation of Protoplanetary Disks
Universe, 2022 Scattered radiation of circumstellar (CS) dust plays an important role in the physics of young stars. Its observational manifestations are various but more often they are connected with the appearance of intrinsic polarization in young stars and their CS
Vladimir P. Grinin +1 more
doaj +1 more source
The Disk Substructures at High Angular Resolution Project (DSHARP). V. Interpreting ALMA Maps of Protoplanetary Disks in Terms of a Dust Model [PDF]
Astrophysical Journal, 2018 The Disk Substructures at High Angular Resolution Project (DSHARP) is the largest homogeneous high-resolution (∼0.″035, or ∼5 au) disk continuum imaging survey with the Atacama Large Millimeter/submillimeter Array (ALMA) so far. In the coming years, many
T. Birnstiel +11 more
semanticscholar +1 more source
Massive Protostellar Disks as a Hot Laboratory of Silicate Grain Evolution
The Astrophysical Journal, 2023 Typical accretion disks around massive protostars are hot enough for water ice to sublimate. We here propose to utilize the massive protostellar disks for investigating the collisional evolution of silicate grains with no ice mantle, which is an ...
Ryota Yamamuro +2 more
doaj +1 more source
Scaling Relations Associated with Millimeter Continuum Sizes in Protoplanetary Disks [PDF]
Astrophysical Journal, 2018 We present a combined, homogenized analysis of archival Submillimeter Array (SMA) and Atacama Large Millimeter/submillimeter Array (ALMA) observations of the spatially resolved 340 GHz (870 μm) continuum emission from 105 nearby protoplanetary disks ...
S. Andrews +5 more
semanticscholar +1 more source
Probing CO and N2 Snow Surfaces in Protoplanetary Disks with N2H+ Emission [PDF]
Astrophysical Journal, 2019 Snowlines of major volatiles regulate the gas and solid C/N/O ratios in the planet-forming midplanes of protoplanetary disks. Snow surfaces are the 2D extensions of snowlines in the outer disk regions, where radiative heating results in an increasing ...
C. Qi +8 more
semanticscholar +1 more source