Results 51 to 60 of about 536 (176)
Magma Ocean Evolution at Arbitrary Redox State
Journal of Geophysical Research: Planets, Volume 129, Issue 12, December 2024.Abstract Interactions between magma oceans and overlying atmospheres on young rocky planets leads to an evolving feedback of outgassing, greenhouse forcing, and mantle melt fraction. Previous studies have predominantly focused on the solidification of oxidized Earth‐similar planets, but the diversity in mean density and irradiation observed in the low ...
Harrison Nicholls +3 more
wiley +1 more source
Differences in elemental abundances between CI chondrites and the solar photosphere
Meteoritics &Planetary Science, Volume 59, Issue 12, Page 3193-3214, December 2024.Abstract CI chondrites have been a proxy for the solar system since the mid‐20th century. The photospheric and CI chondrite abundances (P and CI, respectively) show a strong correlation. CI as a proxy is also justified by the (i) smoothness of their abundances plotted as a function of odd mass number and (ii) agreement within the error of P as ...
A. J. G. Jurewicz +3 more
wiley +1 more source
Meteoritics &Planetary Science, Volume 59, Issue 12, Page 3282-3304, December 2024.Abstract Understanding the material transport and mixing processes in the Solar protoplanetary disk provides important constraints on the origin of chemical and isotopic diversities of our planets. The limited extent of radial transport and mixing between the inner and outer Solar System has been suggested based on a fundamental isotopic dichotomy ...
Kohei Fukuda +7 more
wiley +1 more source
The Meteoritical Society: Business from 2023 to 2024
Meteoritics &Planetary Science, Volume 60, Issue 3, Page 680-696, March 2025.
Nancy L. Chabot +2 more
wiley +1 more source
Natural Sciences, Volume 4, Issue 4, October 2024.Large free aromatic species, with up to 61 carbon atoms, were detected in grains of the Ryugu carbonaceous asteroid using ultra‐sensitive two‐step laser mass spectrometry. This discovery confirms the presence of large polycyclic aromatic hydrocarbons in the interstellar medium and provides new information on the formation and evolution of organic ...
Hassan Sabbah +3 more
wiley +1 more source
Was Earth’s Water Acquired Locally during the Earliest Phases of the Solar System Formation?
The Astrophysical Journal LettersThe origin of the terrestrial water remains debated, as standard solar system formation models suggest that Earth formed from dry grains, inside the snowline of the protosolar nebula (PSN).
Lise Boitard-Crépeau +4 more
doaj +1 more source
Exploring the Ionized Core of the Proto-Planetary Nebula CRL 618 and Its Vicinity with ALMA
GalaxiesProto- and young planetary nebulae comprise dense circumstellar envelopes made of molecular gas and dust, some of which hide compact ionized cores that host stellar systems with hot objects, and show high-velocity bipolar outflows launched from inside ...
José Pablo Fonfría +6 more
doaj +1 more source
AN ASYMMETRIC JET-LAUNCHING MODEL FOR THE PROTOPLANETARY NEBULA CRL 618 [PDF]
The Astrophysical Journal, 2014 We propose an asymmetrical jet ejection mechanism in order to model the mirror symmetry observed in the lobe distribution of some protoplanetary nebulae (pPNe), such as the pPN CRL 618. 3D hydrodynamical simulations of a precessing jet launched from an orbiting source were carried out including an alternation in the ejections of the two outflow lobes ...
Alejandro C. Raga +4 more
openaire +4 more sources
Formation of Methanol via Fischer‐Tropsch Catalysis by Cosmic Iron Sulphide
ChemPhysChem, Volume 25, Issue 17, September 2, 2024.Periodic quantum mechanical simulations evidence the potentiality to synthesise methanol through a Fischer‐Tropsch mechanism in different astrophysical environments facilitated by the catalytic properties of cosmic FeS grains, which are enhanced by the presence of naturally‐occurring point surface defects.
Berta Martinez‐Bachs +3 more
wiley +1 more source
The Bombardment History of the Giant Planet Satellites
The Planetary Science JournalThe origins of the giant planet satellites are debated, with scenarios including formation from a protoplanetary disk, sequential assembly from massive rings, and recent accretion after major satellite–satellite collisions.
William F. Bottke +9 more
doaj +1 more source