Sentences with phrase «models of planetary formation»

Models of planetary formation suggest that giant extrasolar planets detected very near their stars formed at greater distances and migrated inward as a result of gravitational interactions with remnants of the circumstellar disks from which they accumulated.

The improved understanding gives researchers new insight about the basic properties of silica and other materials, and could ultimately lead to improved models of planetary formation and composition and new approaches for designing future materials with improved functionality, such as strength.

The menagerie of exoplanets has provided new natural laboratories for scientists to test out models of planetary formation and evolution.

The story the computers tell is based on the «interacting stellar winds» model of planetary formation, and it corresponds startlingly well with the images astronomers see in the sky.

Not exact matches

Through theoretical modeling, Aurélien Crida of the University of Nice Sophia - Antipolis and Sébastien Charnoz of the University of Paris Diderot found that the moon - formation action begins at the edge of a planetary ring, where a satellite can take shape without being shredded by the gravitational pull of the planet.

Terrestrial planet formation models indicate Earth went through a sequence of major growth phases: accretion of planetesimals and planetary embryos over many tens of millions of years; a giant impact that led to the formation of our Moon; and then the late bombardment, when giant asteroids, dwarfing the one that presumably killed the dinosaurs, periodically hit ancient Earth.

Its dense iron core takes up 42 per cent of its volume, its orbit is less circular than that of the other planets, and current planetary formation models predict Mercury should be closer to the sun and bigger, so we know we're missing something.

One of the reigning theories of planetary formation, the Grand Tack model, blames Jupiter for the Red Planet's paltry size.

In research published this week in Astrophysical Journal Letters, Dr Zoe Leinhardt and colleagues from Bristol's School of Physics have completed computer simulations of the early stages of planet formation around the binary stars using a sophisticated model that calculates the effect of gravity and physical collisions on and between one million planetary building blocks.

Philip Bland at Curtin University in Australia and Bryan Travis at the Planetary Science Institute in Arizona modelled the formation of these rocks and found when ice, dust and mineral grains came together, they wouldn't have been compacted straight away (Science Advances, doi.org/b9p6).

As we detect more exoplanets, astronomers are realizing standard planetary formation models can not account for many of them.

At NSF, we are funding research into the observational characterization of planetary properties, measurements and models of exoplanet atmospheres, and the theory of the formation and evolution of planetary systems.

We aim at investigating correlations between the host star's mass and the presence of wide - orbit giant planets, and at providing new observational constraints on planetary formation models.

None of the approximately 750,000 known asteroids and comets in the Solar System is thought to have originated outside it, despite models of the formation of planetary systems suggesting that orbital migration of giant planets ejects a large fraction of the original planetesimals into interstellar space1.

▽ More The timescale over which planets may form in the circumstellar disks of young stars is one of the main issues of current planetary formation models.

The well - determined planetary properties and unusually large mass also make this planet an important benchmark for theoretical models of super-Jupiter formation.

Abstract: The timescale over which planets may form in the circumstellar disks of young stars is one of the main issues of current planetary formation models.

Assuming the rocky world has the smallest physical size allowed for its mass (94 % Earth's diameter), according to planetary formation models this would consist of a metal core, making up for 65 % of the mass of the entire planet.

We present a study of the planetary systems WASP - 45 and WASP - 46, both composed of a main - sequence star and a close - in ho... ▽ More Accurate measurements of the physical characteristics of a large number of exoplanets are useful to strongly constrain theoretical models of planet formation and evolution, which lead to the large variety of exoplanets and planetary - system configurations that have been observed.