Natural separation of two primordial planetary reservoirs in an expanding solar protoplanetary disk. [PDF]
Sci Adv, 2022 Meteorites display an isotopic composition dichotomy between noncarbonaceous (NC) and carbonaceous (CC) groups, indicating that planetesimal formation in the solar protoplanetary disk occurred in two distinct reservoirs.
Liu B +4 more
europepmc +3 more sources
Isotopic evolution of the protoplanetary disk and the building blocks of Earth and the Moon. [PDF]
Nature, 2018 Nucleosynthetic isotope variability among Solar System objects is often used to probe the genetic relationship between meteorite groups and the rocky planets (Mercury, Venus, Earth and Mars), which, in turn, may provide insights into the building blocks ...
Schiller M, Bizzarro M, Fernandes VA.
europepmc +2 more sources
Chondrules as direct thermochemical sensors of solar protoplanetary disk gas. [PDF]
Sci Adv, 2018 Cathodoluminescence reveals structures indicative of gas-assisted epitaxial growth during chondrule melt crystallization. Chondrules, millimeter-sized igneous spherules comprising the major component of most chondritic meteorites, formed during the first
Libourel G, Portail M.
europepmc +2 more sources
Spiral density waves in a young protoplanetary disk [PDF]
Science, 2016 Gravitational forces are expected to excite spiral density waves in protoplanetary disks, disks of gas and dust orbiting young stars. However, previous observations that showed spiral structure were not able to probe disk midplanes, where most of the ...
Laura M Perez +2 more
exaly +2 more sources
Radial and Vertical Constraints on the Icy Origin of H2CO in the HD 163296 Protoplanetary Disk
The Astrophysical JournalH _2 CO is a small organic molecule widely detected in protoplanetary disks. As a precursor to grain-surface formation of CH _3 OH, H _2 CO is considered an important precursor of O-bearing organic molecules that are locked in ices.
Claudio Hernández-Vera +8 more
doaj +2 more sources
Enhanced Pebble Drift across Planet-opened Gaps in Windy Protoplanetary Disks
The Astrophysical JournalWhen a giant planet forms in a protoplanetary disks, it carves a gap around its orbit separating the disk into two parts: an inner disk and an outer disk.
Lorraine Nicholson, Jaehan Bae
doaj +2 more sources
Protoplanetary Disk Chemistry [PDF]
Annual Review of Astronomy and Astrophysics, 2023 Planets form in disks of gas and dust around young stars. The disk molecular reservoirs and their chemical evolution affect all aspects of planet formation, from the coagulation of dust grains into pebbles to the elemental and molecular compositions of ...
K. Oberg, S. Facchini, D. Anderson
semanticscholar +1 more source
Isotopic Dichotomy among Meteorites and Its Bearing on the Protoplanetary Disk. [PDF]
Astrophys J, 2018 Scott ERD, Krot AN, Sanders IS.
europepmc +2 more sources
Formation of the methyl cation by photochemistry in a protoplanetary disk [PDF]
Nature, 2023 Forty years ago, it was proposed that gas-phase organic chemistry in the interstellar medium can be initiated by the methyl cation CH_3^+ (refs. ^ 1 – 3 ), but so far it has not been observed outside the Solar System^ 4 , 5 . Alternative routes involving
O. Berné +55 more
semanticscholar +1 more source
A JWST inventory of protoplanetary disk ices. The edge-on protoplanetary disk HH 48 NE, seen with the Ice Age ERS program [PDF]
Astronomy & Astrophysics, 2023 Ices are the main carriers of volatiles in protoplanetary disks and are crucial to our understanding of the chemistry that ultimately sets the organic composition of planets.
J. Sturm +26 more
semanticscholar +1 more source