Light Echoes of Protoplanetary Disks [PDF]
The Astrophysical JournalLight echoes offer a means of studying protoplanetary disks, including their geometry and composition, even when they are not spatially resolved. We present a test of this approach applied specifically to optically thick, geometrically flared disks ...
Austin J. King, Benjamin C. Bromley
doaj +2 more sources
Evolution of PAHs in protoplanetary disks [PDF]
EAS Publications Series, 2011 Depending on whom you ask, PAHs are either the smallest dust particles or the largest gas-phase molecules in space. Whether referred to as gas or dust, these PAHs can contain up to 20% of the total cosmic carbon abundance and as such also play an important role in the carbon chemistry of protoplanetary disks.
arxiv +5 more sources
Dust in protoplanetary disks: observations* [PDF]
EPJ Web of Conferences, 2015 Solid particles, usually referred to as dust, are a crucial component of interstellar matter and of planet forming disks surrounding young stars. Despite the relatively small mass fraction of ≈1% (in the solar neighborhood of our galaxy; this number may ...
Waters L.B.F.M.
doaj +3 more sources
On the Submillimeter Opacity of Protoplanetary Disks [PDF]
The Astrophysical Journal, 2006 Submitted to ApJ.
B. T. Draine
openalex +5 more sources
A New Method for Direct Measurement of Isotopologue Ratios in Protoplanetary Disks: A Case Study of the 12CO/13CO Ratio in the TW Hya Disk [PDF]
Astrophysical Journal, 2022 Planetary systems are thought to be born in protoplanetary disks. Isotope ratios are a powerful tool for investigating the material origin and evolution from molecular clouds to planetary systems via protoplanetary disks.
T. Yoshida +4 more
semanticscholar +1 more source
Molecules with ALMA at Planet-forming Scales (MAPS). II. CLEAN Strategies for Synthesizing Images of Molecular Line Emission in Protoplanetary Disks [PDF]
Astrophysical Journal Supplement Series, 2021 The Molecules with ALMA at Planet-forming Scales Large Program (MAPS LP) surveyed the chemical structures of five protoplanetary disks across more than 40 different spectral lines at high angular resolution (0.″15 and 0.″30 beams for Bands 6 and 3 ...
I. Czekala +29 more
semanticscholar +1 more source
The Mass Budgets and Spatial Scales of Exoplanet Systems and Protoplanetary Disks [PDF]
Astrophysical Journal, 2021 Planets are born from disks of gas and dust, and observations of protoplanetary disks are used to constrain the initial conditions of planet formation.
G. Mulders +3 more
semanticscholar +1 more source
Investigating the Relative Gas and Small Dust Grain Surface Heights in Protoplanetary Disks [PDF]
Astrophysical Journal, 2021 Dust evolution in protoplanetary disks from small dust grains to pebbles is key to the planet formation process. The gas in protoplanetary disks should influence the vertical distribution of small dust grains (∼1 μm) in the disk.
Evan A. Rich +9 more
semanticscholar +1 more source
Observations of edge-on protoplanetary disks with ALMA [PDF]
Astronomy & Astrophysics, 2020 Aims. We aim to study vertical settling and radial drift of dust in protoplanetary disks from a different perspective: an edge-on view. An estimation of the amplitude of settling and drift is highly relevant to understanding planet formation. Methods. We
M. Villenave +17 more
semanticscholar +1 more source
CO Depletion in Protoplanetary Disks: A Unified Picture Combining Physical Sequestration and Chemical Processing [PDF]
Astrophysical Journal, 2020 The gas-phase CO abundance (relative to hydrogen) in protoplanetary disks decreases by up to two orders of magnitude from its interstellar medium value of ∼10−4, even after accounting for freeze-out and photodissociation. Previous studies have shown that
S. Krijt +5 more
semanticscholar +1 more source