Results 31 to 40 of about 45,209 (160)
, 2017 We report and discuss the discovery of a comoving pair of bright solar-type stars, HD 240430 and HD 240429, with a significant difference in their chemical abundances.
Brewer, John M. +5 more
core +1 more source
Using Satellites to Probe Extrasolar Planet Formation
, 2012 Planetary satellites are an integral part of the heirarchy of planetary systems. Here we make two predictions concerning their formation. First, primordial satellites, which have an array of distinguishing characteristics, form only around giant planets.
Canup +7 more
core +1 more source
Pristinity and petrogenesis of eucrites
Meteoritics & Planetary Science, 2023 New petrography, mineral chemistry, and whole rock major, minor, and trace element abundance data are reported for 29 dominantly unbrecciated basaltic (noncumulate) eucrites and one cumulate eucrite.
J. Dhaliwal, J. Day, K. Tait
semanticscholar +1 more source
Davisite, CaScAlSiO_6, a new pyroxene from the Allende meteorite [PDF]
, 2009 Davisite, ideally CaScAlSiO_6, is a new member of the Ca clinopyroxene group, where Sc^(3+) is dominant in the M1 site. It occurs as micro-sized crystals along with perovskite and spinel in an ultra-refractory inclusion from the Allende meteorite.
Ma, Chi, Rossman, George R.
core
The Planetary Science Journal, 2023 Near-infrared spectra of Umbriel and the other classical Uranian moons exhibit 2.2 μm absorption bands that could result from ammonia (NH3) bearing species, possibly exposed in the geologically recent past.
R. Cartwright +5 more
semanticscholar +1 more source
How Does the Thermal Environment Affect the Exosphere/Surface Interface at Mercury?
The Planetary Science Journal, 2023 The fate of Mercury’s exospheric volatiles and, in a lesser way, of the refractory particles absorbed in the first few centimeters of the surface both depend highly on the temperature profile with depth and its diurnal variation. In this paper, we review
F. Leblanc +12 more
semanticscholar +1 more source
The Diversity of Extrasolar Terrestrial Planets
, 2010 Extrasolar planetary host stars are enriched in key planet-building elements. These enrichments have the potential to drastically alter the building blocks available for terrestrial planet formation.
Asplund +8 more
core +1 more source
The GAPS Programme with HARPS-N at TNG. X. Differential abundances in the XO-2 planet hosting binary [PDF]
, 2015 Binary stars hosting exoplanets are a unique laboratory where chemical tagging can be performed to measure with high accuracy the elemental abundances of both stellar components, with the aim to investigate the formation of planets and their subsequent ...
Affer, L. +28 more
core +2 more sources
Probing the Protosolar Disk Using Dust Filtering at Gaps in the Early Solar System
, 2019 Jupiter and Saturn formed early, before the gas disk dispersed. The presence of gap-opening planets affects the dynamics of the gas and embedded solids and halts the inward drift of grains above a certain size.
Benítez-Llambay, Pablo +6 more
core +1 more source
Noble Gas Planetology and the Xenon Clouds of Uranus [PDF]
The Planetary Science JournalNoble gases provide tracers of cosmic provenance that are accessible to a future Uranus atmospheric probe. Argon and krypton are expected to be well mixed on Uranus with respect to H2 and He, although condensation at the winter pole may be possible.
K. Zahnle
semanticscholar +1 more source