Results 41 to 50 of about 45,209 (160)

The Pressure and Temperature Limits of Likely Rocky Exoplanets

, 2019
The interior composition of exoplanets is not observable, limiting our direct knowledge of their structure, composition, and dynamics. Recently described observational trends suggest that rocky exoplanets, that is, planets without significant volatile ...
Panero, Wendy R., Unterborn, Cayman T.
core   +1 more source

HD 80606: Searching the chemical signature of planet formation [PDF]

, 2015
(Abridged) Binary systems with similar components are ideal laboratories which allow several physical processes to be tested, such as the possible chemical pattern imprinted by the planet formation process. Aims.
Buccino, A., Flores, M., Saffe, C.
core   +2 more sources

New Paradigms For Asteroid Formation

, 2015
Asteroids and meteorites provide key evidence on the formation of planetesimals in the Solar System. Asteroids are traditionally thought to form in a bottom-up process by coagulation within a population of initially km-scale planetesimals.
Cuzzi, Jeffrey N., Gounelle, Matthieu, Jacquet, Emmanuel, Johansen, Anders, Morbidelli, Alessandro   +4 more
core   +1 more source

High-precision analysis of binary stars with planets. I. Searching for condensation temperature trends in the HD 106515 system

, 2019
We explore the probable chemical signature of planet formation in the remarkable binary system HD 106515. The A star hosts a massive long-period planet with 9 MJup detected by radial velocity.
Arancibia, M. Jaque, Collado, A., Flores, M., Jofre, E., Lopez, F. M., Miquelarena, P., Saffe, C.   +6 more
core   +1 more source

Chondrule Properties and Formation Conditions

Space Science Reviews
Chondrules are iconic sub-millimeter spheroids representing the most abundant high-temperature dust formed during the evolution of the circumsolar disk. Chondrules have been the subject of a great deal of research, but no consensus has yet emerged as to ...
Y. Marrocchi, Rhian.H. Jones, Sara S. Russell, D. Hezel, J. Barosch, Aleksandra Kuznetsova   +5 more
semanticscholar   +1 more source

Revisiting the pre-main-sequence evolution of stars II. Consequences of planet formation on stellar surface composition

, 2018
We want to investigate how planet formation is imprinted on stellar surface composition using up-to-date stellar evolution models. We simulate the evolution of pre-main-sequence stars as a function of the efficiency of heat injection during accretion ...
Guillot, Tristan, Ida, Shigeru, Kunitomo, Masanobu, Takeuchi, Taku   +3 more
core   +1 more source

The detailed chemical composition of the terrestrial planet host Kepler-10

, 2015
Chemical abundance studies of the Sun and solar twins have demonstrated that the solar composition of refractory elements is depleted when compared to volatile elements, which could be due to the formation of terrestrial planets.
Asplund, M., Bensby, T., Gustafsson, B., Howes, L. M., Lambert, D. L., Liu, F., Melendez, J., Ramirez, I., Roederer, I. U., Yong, D.   +9 more
core   +1 more source

Forsteritic olivine in EH (enstatite) chondrite meteorites: A record of nebular, metamorphic, and crystal‐lattice diffusion effects

Meteoritics & Planetary Science
The occurrence of forsteritic olivine in EH enstatite chondrites is indicative of bulk disequilibrium. In MgO‐rich magmatic systems, forsterite can either crystallize as a liquidus phase or be produced during peritectic melting of enstatite.
S. McKibbin, L. Hecht, C. Makarona, Matthew Huber, Hermann Terryn, Phillippe Claeys   +5 more
semanticscholar   +1 more source

Methane Planets and their Mass-Radius Relation

, 2015
Knowledge of both the mass and radius of an exoplanet allows us to estimate its mean density, and therefore its composition. Exoplanets seem to fill a very large parameter space in terms of mass and composition, and unlike the solar-system's planets ...
Helled, Ravit, Podolak, Morris, Vos, Eran   +2 more
core   +1 more source

Extent of alteration, paleomagnetic history, and infrared spectral properties of the Tarda ungrouped carbonaceous chondrite

Meteoritics & Planetary Science
Tarda is an ungrouped, hydrated carbonaceous chondrite (C2‐ung) that was seen to fall in Morocco in 2020. Early studies showed that Tarda chemically resembles another ungrouped chondrite, Tagish Lake (C2‐ung), which has previously been linked to the dark
H. Bates, R. Aspin, C. Y. Fu, C. Harrison, E. Feaver, E. Branagan‐Harris, A. King, J. Bryson, S. Sridhar, C. Nichols   +9 more
semanticscholar   +1 more source