Results 121 to 130 of about 21,167 (278)

Formation of dust-rich planetesimals from sublimated pebbles inside of the snow line [PDF]

, 2016
Context. For up to a few millions of years, pebbles must provide a quasi-steady inflow of solids from the outer parts of protoplanetary disks to their inner regions. Aims.
S. Ida, T. Guillot
semanticscholar   +1 more source

Long-term, multiwavelength light curves of ultra-cool dwarfs: II. The evolving light curves of the T2. 5 SIMP 0136 & the uncorrelated light curves of the M9 TVLM 513 [PDF]

, 2016
We present multiwavelength, multi-telescope, ground-based follow-up photometry of the white dwarf WD 1145+017, that has recently been suggested to be orbited by up to six or more, short-period, low- mass, disintegrating planetesimals.
Croll, B., Dalba, P. A., Han, E., Lichtman, J., Muirhead, P. S., Radigan, J.   +5 more
core   +1 more source

WATER FRACTIONS IN EXTRASOLAR PLANETESIMALS [PDF]

The Astronomical Journal, 2011
Accepted for publication in the Astronomical Journal, 22 pages, 4 figures, 1 ...
Jura, M., Xu, S.
openaire   +2 more sources

3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé, Zélia Dionnet, Alice Aléon‐Toppani, Rosario Brunetto, Andrew King, Emmanuel Gardés, Eva Heripré, Damien Loizeau, Sasha Cryan, Kentaro Hatakeda   +9 more
wiley   +1 more source

Azimuthal asymmetries in the debris disk around HD 61005: A massive collision of planetesimals? [PDF]

, 2016
Context. Debris disks off er valuable insights into the latest stages of circumstellar disk evolution, and can possibly help us to trace the outcomes of planetary formation processes.
J. Olofsson, M. Samland, H. Avenhaus, Claudio Caceres, T. Henning, A. Moór, J. Milli, H. Cánovas, S. Quanz, M. Schreiber, J. Augereau, A. Bayo, A. Bazzon, J. Beuzit, A. Boccaletti, E. Buenzli, S. Casassus, G. Chauvin, C. Dominik, S. Desidera, M. Feldt, R. Gratton, M. Janson, A. Lagrange, M. Langlois, J. Lannier, A. Maire, D. Mesa, C. Pinte, D. Rouan, G. Salter, C. Thalmann, A. Vigan   +32 more
semanticscholar   +1 more source

Terrestrial Planet Formation from Two Source Reservoirs

The Astronomical Journal
This work describes new dynamical simulations of terrestrial planet formation. The simulations started at the protoplanetary disk stage, when planetesimals formed and accreted into protoplanets, and continued past the late stage of giant impacts.
David Nesvorný, Alessandro Morbidelli, William F. Bottke, Rogerio Deienno, Max Goldberg   +4 more
doaj   +1 more source

Experimental constraints on the origin of metal and carbon in ureilite meteorites

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2715-2734, November 2025.
Abstract Ureilites are carbon‐rich ultramafic achondrites that display unique textures, including strips of metal and carbon phases situated along grain boundaries and in fractures. Shock metamorphism observed in ureilites suggests an episode of brittle deformation caused by impact disruption of their parent body.
Nicolas P. Walte, Max Collinet, Cyrena A. Goodrich   +2 more
wiley   +1 more source

Understanding Planetesimals

Eos, Transactions American Geophysical Union, 2014
Planetesimals represent turning points in planetary formation, when the materials required for building planets are first incorporated into bodies with radii from tens to hundreds of kilometers or larger, and are sometimes differentiated into metallic cores and silicate mantles. These early celestial bodies are the accretionary step between the dust of
openaire   +1 more source

How to form planetesimals from mm-sized chondrules and chondrule aggregates [PDF]

, 2015
The size distribution of asteroids and Kuiper belt objects in the solar system is difficult to reconcile with a bottom-up formation scenario due to the observed scarcity of objects smaller than $\sim$100 km in size.
D. Carrera, A. Johansen, M. Davies
semanticscholar   +1 more source

Chromite in main group pallasite meteorites: Accessory mineral tracing planetesimal differentiation

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2703-2714, November 2025.
Abstract Main group pallasite meteorites (PMG) are samples of an early, highly differentiated magmatic planetesimal dominated by olivine and metal‐sulfide‐phosphide assemblages with accessory chromite among other phases. This mineralogy reflects mantle‐ and core‐related reservoirs, but the relative contributions of each and the overall petrogenesis are
Seann J. McKibbin, Lutz Hecht, Matthew S. Huber, Christina Makarona, Stepan M. Chernonozhkin, Philippe Claeys, Steven Goderis   +6 more
wiley   +1 more source