Results 81 to 90 of about 42,848 (232)

Modeling the Jovian subnebula: I - Thermodynamical conditions and migration of proto-satellites [PDF]

, 2005
We have developed an evolutionary turbulent model of the Jovian subnebula consistent with the extended core accretion formation models of Jupiter described by Alibert et al. (2005b) and derived from Alibert et al. (2004,2005a).
Alibert, Alibert, Alibert, Bate, Canup, Coradini, D'Angelo, Hibbitts, Hibbitts, Ida, Laughlin, Lin, Lubow, Magni, Menou, Mosqueira, Mosqueira, Mousis, Mousis, Mousis, Nelson, O. Mousis, Papaloizou, Pollack, Rafikov, Saumon, Shakura, Spohn, Stevenson, Tanaka, Veras, W. Benz, Ward, Y. Alibert   +33 more
core   +2 more sources

Clumpy Flows in Protoplanetary and Planetary Nebulae

, 2003
Many astrophysical flows occur in inhomogeneous media. We briefly discuss some general properties of the adiabatic and radiative inhomogeneous systems and discuss the relevance of those properties to the planetary nebulae systems. We then focus on radiative hypersonic bullets and the applicability of this model to planetary and protoplanetary systems ...
Poludnenko, A. Y., Frank, A., Mitran, S.
openaire   +2 more sources

H   imaging polarimetry of the protoplanetary nebula M2-9 [PDF]

Monthly Notices of the Royal Astronomical Society, 1993
After correction for interstellar polarization, our Hα polarization map of the protoplanetary nebula M2-9 shows that a significant fraction of the emission-line radiation from the nebular lobes is scattered radiation originating in the central core. We find no evidence for a spatially extended illuminating source on scales of ≥ 1-2 arcsec.
R. M. J. Scarrott, S. M. Scarrott, R. D. Wolstencroft   +2 more
openaire   +1 more source

Chemistry in Externally FUV-irradiated Disks in the Outskirts of the Orion Nebula Cluster

The Astrophysical Journal
Most stars are born in stellar clusters, and their protoplanetary disks, which are the birthplaces of planets, can, therefore, be affected by the radiation of nearby massive stars.
Javiera K. Díaz-Berríos, Viviana V. Guzmán, Catherine Walsh, Karin I. Öberg, L. Ilsedore Cleeves, Elizabeth Artur de la Villarmois, John Carpenter   +6 more
doaj   +1 more source

The formation of Jupiter by hybrid pebble-planetesimal accretion [PDF]

, 2018
The standard model for giant planet formation is based on the accretion of solids by a growing planetary embryo, followed by rapid gas accretion once the planet exceeds a so-called critical mass.
Alibert, Yann, Ataiee, Sareh, Benz, Willy, Burn, Remo, Helled, Ravit, Mayer, Lucio, Mordasini, Christoph, Quanz, Sascha P., Schönbächler, Maria, Senecal, Luc, Venturini, Julia   +10 more
core   +2 more sources

Oued Chebeika 002: A new CI1 meteorite linked to outer solar system bodies

Meteoritics &Planetary Science, Volume 60, Issue 7, Page 1441-1479, July 2025.
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, M. Gounelle, B. Devouard, J.‐A. Barrat, L. Bonal, A. J. King, C. Maurel, P. Beck, M. Roskosz, J.‐C. Viennet, D. Mukherjee, N. Dauphas, P. R. Heck, T. Yokoyama, K. López García, O. Poch, O. Grauby, C. S. Harrison, V. Vinogradoff, P. Vernazza, S. Tikoo, V. Vidal, P. Rochette, D. AuYang, D. Borschneck, J. Juraszek, B. Clark   +26 more
wiley   +1 more source

Fast accretion of small planetesimals by protoplanetary cores

, 2003
We explore the dynamics of small planetesimals coexisting with massive protoplanetary cores in a gaseous nebula. Gas drag strongly affects the motion of small bodies leading to the decay of their eccentricities and inclinations, which are excited by the ...
Greenberg J. M., Hasegawa M., Ida S., R. R. Rafikov, Weidenschilling S. J.   +4 more
core   +2 more sources

A primitive asteroid that lived fast and died young sampled by a xenolith in the Cold Bokkeveld CM2 carbonaceous chondrite

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 464-483, March 2025.
Abstract Xenoliths in carbonaceous chondrites include lithologies that are unrepresented in the meteorite record and so are a rich source of information on asteroid diversity. Cold Bokkeveld is a CM2 regolith breccia that contains both hydrous and anhydrous lithic clasts. Here, we describe a hydrous clast with a fine‐grained rim.
Martin R. Lee, Cameron J. Floyd, Robin Haller, Sammy Griffin   +3 more
wiley   +1 more source

Mid‐infrared detection and characterization of refractory inclusions in CM and CO chondrites: A non‐destructive approach for returned space samples

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 544-569, March 2025.
Abstract Refractory inclusions (RIs) in chondrites are widely used as tracers of early solar system formation conditions. In the context of sample‐return missions, a non‐destructive and non‐invasive analytical tool that can rapidly detect and characterize RIs in space samples during their early phase of study is highly needed.
Jean Charlier, Alice Aléon‐Toppani, Rosario Brunetto, Jérôme Aléon, Ferenc Borondics   +4 more
wiley   +1 more source

The Pre-outburst Properties of the FU Ori Object HBC 722

The Astrophysical Journal Letters
FU Ori outbursts are thought to play an important role in stellar assembly and the evolution of protoplanetary disks. However, the progenitor young stellar objects are largely uncharacterized.
Gregory J. Herczeg, Bo Reipurth
doaj   +1 more source