Results 91 to 100 of about 55,496 (241)
Oued Chebeika 002: A new CI1 meteorite linked to outer solar system bodies
Meteoritics &Planetary Science, EarlyView.Abstract CI1 chondrites are rare meteorites with high scientific value. In fact, they are the most chemically primitive meteorites and show evidence of intense parent‐body aqueous alteration. They also share strong similarities with samples from Ryugu and Bennu asteroids returned by the JAXA Hayabusa2 and NASA's OSIRIS‐REx missions.
J. Gattacceca +26 more
wiley +1 more source
Vertical shear instability in the solar nebula [PDF]
, 2016 We quantify the thermodynamic requirement for the Vertical Shear Instability and evaluate its relevance to realistic protoplanetary disks as a potential route to hydrodynamic turbulence.
arxiv +1 more source
Meteoritics &Planetary Science, Volume 60, Issue 2, Page 190-205, February 2025.Abstract The alignment of non‐spherical “flattened” chondrules into a petrofabric is a common feature of hydrated carbonaceous chondrite meteorites. This texture can form as a result of impacts at peak shock pressures exceeding 10 GPa. However, many carbonaceous chondrites with petrofabrics are unshocked.
Laura E. Jenkins +6 more
wiley +1 more source
Giant Planet Formation: A First Classification of Isothermal Protoplanetary Equilibria [PDF]
, 2005 We present a model for the equilibrium of solid planetary cores embedded in a gaseous nebula. From this model we are able to extract an idealized roadmap of all hydrostatic states of the isothermal protoplanets. The complete classification of the isothermal protoplanetary equilibria should improve the understanding of the general problem of giant ...
arxiv +1 more source
Constraint on the giant planet production by core accretion
, 2010 The issue of giant planet formation by core instability (CI) far from the central star is rather controversial because the growth of massive solid core necessary for triggering the CI can take longer than the lifetime of the protoplanetary disk.
Baraffe +35 more
core +2 more sources
The Formation of Uranus and Neptune in Solid-Rich Feeding Zones: Connecting Chemistry and Dynamics [PDF]
, 2009 The core accretion theory of planet formation has at least two fundamental problems explaining the origins of Uranus and Neptune: (1) dynamical times in the trans-Saturnian solar nebula are so long that core growth can take > 15 Myr, and (2) the onset of
Alexander +41 more
core +1 more source
Meteoritics &Planetary Science, Volume 60, Issue 2, Page 247-272, February 2025.Abstract Calcium‐aluminum‐rich inclusions (CAIs) are the first objects that formed in the solar accretion disk and therefore provide valuable insights into the evolution of the early solar system. A long‐standing question regarding this earliest formative period relates to the storage of CAIs in the 1–4 Myr time period between their formation and later
P. Ghaznavi +3 more
wiley +1 more source
A tell-tale tracer for externally irradiated protoplanetary disks: Comparing the [C I] 8727 line and ALMA observations in proplyds [PDF]
Astronomy & AstrophysicsThe evolution of protoplanetary disks in regions with massive OB stars is influenced by externally driven winds that deplete the outer parts of these disks.
M. Aru +17 more
semanticscholar +1 more source
Cosmochemical Consequences of Particle Trajectories During FU Orionis Outbursts by the Early Sun
, 2012 The solar nebula is thought to have undergone a number of episodes of FU Orionis outbursts during its early evolution. We present here the first calculations of the trajectories of particles in a marginally gravitationally unstable solar nebula during an
Alan P. Boss +61 more
core +1 more source
A close view on the protoplanetary disk in the Bok globule CB26 [PDF]
, 2001 We present new sub-arcsecond-resolution near-infrared polarimetric imaging and millimetre interferometry data on the circumstellar disk system in the Bok globule CB26.
Launhardt, R. +2 more
core +2 more sources