Results 21 to 30 of about 45,209 (160)

Core Formation in Giant Gaseous Protoplanets

, 2008
Sedimentation rates of silicate grains in gas giant protoplanets formed by disk instability are calculated for protoplanetary masses between 1 M_Saturn to 10 M_Jupiter.
Ackerman, Alexander, Bodenheimer, Boss, Boss, Boss, DeCampli, Dominik, Gerald Schubert, Guillot, Helled, Helled, Helling, Hubickyj, Lissauer, Markiewicz, Mayer, Mayer, Mayer, Papaloizou, Podolak, Podolak, Pollack, Pollack, Rafikov, Ravit Helled, Saumon, Saumon, Volk, Weidenschilling, Wetherill, Woitke   +31 more
core   +1 more source

Bayesian analysis of interiors of HD 219134b, Kepler-10b, Kepler-93b, CoRoT-7b, 55 Cnc e, and HD 97658b using stellar abundance proxies [PDF]

, 2016
Using a generalized Bayesian inference method, we aim to explore the possible interior structures of six selected exoplanets for which planetary mass and radius measurements are available in addition to stellar host abundances: HD~219134b, Kepler-10b ...
Dorn, C., Hinkel, N. R., Venturini, J.
core   +2 more sources

CRIRES+ and ESPRESSO Reveal an Atmosphere Enriched in Volatiles Relative to Refractories on the Ultrahot Jupiter WASP-121b

The Astronomical Journal
One of the outstanding goals of the planetary science community is to measure the present-day atmospheric composition of planets and link this back to formation.
Stefan Pelletier, Björn Benneke, Yayaati Chachan, Luc Bazinet, Romain Allart, H. Jens Hoeijmakers, Alexis Lavail, Bibiana Prinoth, Louis-Philippe Coulombe, Joshua D. Lothringer, Vivien Parmentier, Peter Smith, Nicholas Borsato, Brian Thorsbro   +13 more
doaj   +1 more source

Elemental ratios in stars vs planets

, 2015
Context. The chemical composition of planets is an important constraint for planet formation and subsequent differentiation. While theoretical studies try to derive the compositions of planets from planet formation models in order to link the composition
Alibert, Yann, Leya, Ingo, Marboeuf, Ulysse, Mezger, Klaus, Thiabaud, Amaury   +4 more
core   +1 more source

A search for ^(70)Zn anomalies in meteorites [PDF]

, 2009
No ^(70)Zn isotopic anomalies have been detected in primitive meteorites to a level of precision of less than 40 parts per million (2σ). Any pre-existing nucleosynthetic anomaly on ^(70)Zn was averaged out by mixing in the solar nebula before planetary
Dauphas, Nicolas, Moynier, Frederic, Podosek, Frank A.   +2 more
core   +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
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 ...
Jean Charlier, A. Aléon‐Toppani, Rosario Brunetto, J. Aléon, F. Borondics   +4 more
semanticscholar   +1 more source

Al-Mg systematics of hibonite-bearing Ca,Al-rich inclusions from Ningqiang [PDF]

, 2011
Hibonite-bearing Ca,Al-rich inclusions (CAIs) usually occur in CM and CH chondrites and possess petrographic and isotopic characteristics distinctive from other typical CAIs.
Guan, Yunbin, Hsu, Weibiao, Wang, Ying
core  

From stellar nebula to planetesimals [PDF]

, 2014
Solar and extrasolar comets and extrasolar planets are the subject of numerous studies in order to determine their chemical composition and internal structure.
Alibert, Yann, Benz, Willy, Cabral, Nahuel, Marboeuf, Ulysse, Thiabaud, Amaury   +4 more
core   +2 more sources

Searching for the signatures of terrestrial planets in F-, G-type main-sequence stars

, 2013
We have studied the volatile-to-refractory abundance ratios to investigate their possible relation with the low-mass planetary formation. We present a fully differential chemical abundance analysis using high-quality HARPS and UVES spectra of 61 late F ...
Adibekyan, V. Zh., Delgado-Mena, E., Hernández, J. I. González, Israelian, G., Santos, N. C., Sousa, S. G., Udry, S.   +6 more
core   +2 more sources

Low Mg/Si planetary host stars and their Mg-depleted terrestrial planets

, 2012
Simulations have shown that a diverse range of extrasolar terrestrial planet bulk compositions are likely to exist, based on the observed variations in host star elemental abundances.
Asplund, Bond, Brugamyer, Butler, Delgado Mena, Dufour, Duncan, Gonzalez, Gonzalez, Hersant, Jura, Jura, Klein, Klein, Kuchner, Mandell, Petigura, Valencia, Zuckerman, Zuckerman   +19 more
core   +1 more source