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
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
MINDS. The Detection of 13CO2 with JWST-MIRI Indicates Abundant CO2 in a Protoplanetary Disk [PDF]
Astrophysical Journal Letters, 2022 We present JWST-MIRI Medium Resolution Spectrometer (MRS) spectra of the protoplanetary disk around the low-mass T Tauri star GW Lup from the MIRI mid-INfrared Disk Survey Guaranteed Time Observations program.
S. Grant +45 more
semanticscholar +1 more source
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
Evidence that the Hot Jupiter WASP-77 A b Formed Beyond Its Parent Protoplanetary Disk’s H2O Ice Line [PDF]
Astronomical Journal, 2022 Idealized protoplanetary disk and giant planet formation models have been interpreted to suggest that a giant planet’s atmospheric abundances can be used to infer its formation location in its parent protoplanetary disk.
Henrique M. Reggiani +4 more
semanticscholar +1 more source
2021 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules [PDF]
Astrophysical Journal Supplement Series, 2021 To date, 241 individual molecular species, composed of 19 different elements, have been detected in the interstellar and circumstellar medium by astronomical observations.
B. McGuire
semanticscholar +1 more source
Estimate on Dust Scale Height from the ALMA Dust Continuum Image of the HD 163296 Protoplanetary Disk [PDF]
Astrophysical Journal, 2021 We aim at estimating the dust scale height of protoplanetary disks from millimeter continuum observations. First, we present a general expression of intensity of a ring in a protoplanetary disk and show that we can constrain the dust scale height by the ...
Kiyoaki Doi, A. Kataoka
semanticscholar +1 more source
Protoplanetary disk formation from the collapse of a prestellar core [PDF]
Astronomy & Astrophysics, 2021 Context. Between the two research communities that study star formation and protoplanetary disk evolution, only a few efforts have been made to understand and bridge the gap between studies of a collapsing prestellar core and a developed disk.
Yueh-Ning Lee, S. Charnoz, P. Hennebelle
semanticscholar +1 more source
Evidence for a Cosmic-Ray Gradient in the IM Lup Protoplanetary Disk [PDF]
Astrophysical Journal, 2021 Protoplanetary disk evolution is strongly impacted by ionization from the central star and local environment, which collectively have been shown to drive chemical complexity and are expected to impact the transport of disk material.
R. Seifert +3 more
semanticscholar +1 more source