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
Thermodynamics of the dead-zone inner edge in protoplanetary disks [PDF]
, 2014 In protoplanetary disks, the inner boundary between the turbulent and laminar regions could be a promising site for planet formation, thanks to the trapping of solids at the boundary itself or in vortices generated by the Rossby wave instability.
Faure, Julien +2 more
core +9 more sources
ALMA Survey of Lupus Protoplanetary Disks. II. Gas Disk Radii [PDF]
, 2018 We present Atacama Large Millimeter/Sub-Millimeter Array (ALMA) Band 6 observations of a complete sample of protoplanetary disks in the young (∼1–3 Myr) Lupus star-forming region, covering the 1.33 mm continuum and the 12CO, 13CO, and C18O J = 2–1 lines.
M. Ansdell +12 more
semanticscholar +1 more source
Why do protoplanetary disks appear not massive enough to form the known exoplanet population? [PDF]
Astronomy & Astrophysics, 2018 When and how planets form in protoplanetary disks is still a topic of discussion. Exoplanet detection surveys and protoplanetary disk surveys are now providing results that are leading to new insights.
C. Manara +4 more
semanticscholar +1 more source
Streaming Instability in Turbulent Protoplanetary Disks [PDF]
Astrophysical Journal, 2019 The streaming instability for solid particles in protoplanetary disks is reexamined assuming the familiar alpha (α) model for isotropic turbulence. Turbulence always reduces the growth rates of the streaming instability relative to values calculated for ...
O. Umurhan, P. Estrada, J. Cuzzi
semanticscholar +1 more source
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks [PDF]
Astrophysical Journal, 2019 CO is the most widely used gas tracer of protoplanetary disks. Its abundance is usually assumed to be an interstellar ratio throughout the warm molecular layer of the disk.
Ke Zhang +4 more
semanticscholar +1 more source
Dust Coagulation and Settling in Layered Protoplanetary Disks [PDF]
, 2006 Previous models of dust growth in protoplanetary disks considered either uniformly laminar or turbulent disks. This Letter explores how dust growth occurs in a layered protoplanetary disk in which the magnetorotational instability generates turbulence ...
Ciesla, Fred J.
core +2 more sources
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
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
Low EUV Luminosities Impinging on Protoplanetary Disks [PDF]
, 2014 The amount of high-energy stellar radiation reaching the surface of protoplanetary disks is essential to determine their chemistry and physical evolution. Here, we use millimetric and centimetric radio data to constrain the EUV luminosity impinging on 14
Brooks, K. J. +6 more
core +3 more sources