Sentences with phrase «large debris disks»

The problem with this interpretation was that such collision events would create large debris disks which would glow brightly in the infrared, yet previous searches with NASA's Wide - field Infrared Survey Explorer, or WISE, had found no such excess infrared emission from KIC 8462852.

This large debris disk is similar to the Kuiper Belt, which encircles the solar system and contains a range of icy bodies from dust grains to objects the size of dwarf planets, such as Pluto.

Not exact matches

These «debris disks» are constantly fed by collisions among rocky bodies — the larger of which can survive and grow by continued accretion — because the tiny dust grains quickly fall onto the central star or get blown out of the planetary system.

The observable material is a so - called debris disk consisting entirely of dust and large rocks, some of them possibly as large as planets.

Hubble also spied a dark gap dividing an even larger disk of debris around a star called HD 141569, the first such clearing seen within a disk.

A few million years later, once the debris disk had dissipated, the tidal effects of Mars brought most of these satellites back down onto the planet, including the very large moon.

The discovery that the debris disks around some larger stars retain carbon monoxide longer than their Sun - like counterparts may provide insights into the role this gas plays in the development of planetary systems.

This finding runs counter to astronomers» expectations, which hold that stronger radiation from larger stars should strip away gas from their debris disks faster than the comparatively mild radiation from smaller stars.

Team leader Mauri Valtonen of the University of Turku in Finland used equations derived from Einstein's theory of general relativity to show that the pulses could be caused by a small, orbiting black hole plunging into the debris disk around the larger one, situated at one end of the orbital ellipse.

His calculations were the first to demonstrate that debris disks around the nearby stars Vega and β Pictoris are newly - formed planetary systems containing planets at least as large as Pluto and Mars.

For example, a large impact would create an enormous disk of debris, and while this would feed the creation of more massive moons, smaller bodies would likely be unable to coalesce.

This talk will focus on our new discoveries with VLT / SPHERE of a beautiful two - armed spiral disk with a large gap (the third known of its kind) and an edge - on warped debris disk — similar to the warp induced by the planet in Beta Pic.

Researchers looked at 130 single - star systems that the Spitzer Space Telescope had determined to have debris disks around them and compared them to 277 stellar systems that appeared not to have debris disks, making this the largest study to observe stars with debris disks.

There has been no shortage of proposed explanations that have been put forth in order to account for the unusual observations, from the more mundane ones which include the presence of cometary fragments and large disk of debris from planetary collisions within the star system, to the more imaginative and fascinating ones which have invoked the presence of an extraterrestrial super-civilisation that is in the process of constructing gigantic megastructures around the star itself.

Given that Tau Ceti does not appear to be a young star, the ring of dusty debris is believed to be produced by collisions between larger comets and asteroids that break them down into smaller and smaller pieces, and Tau Ceti's disk is similar in size and shape to the disk of comets and asteroids that orbits the Sun, Sol.

The largest survey of M dwarf debris disks to date only found ~ 175 new disks, and most of those were quite old, over 1 billion years old.

The outer disk is revealed in reprocessed archival Hubble Space Telescope NICMOS F110W images, as well as new coronagraphic H band images from the Very Large Telescope SPHERE instr... ▽ More We present the first scattered - light images of the debris disk around 49 ceti, a ~ 40 Myr A1 main sequence star at 59 pc, famous for hosting two massive dust belts as well as large quantities of atomic and molecularLarge Telescope SPHERE instr... ▽ More We present the first scattered - light images of the debris disk around 49 ceti, a ~ 40 Myr A1 main sequence star at 59 pc, famous for hosting two massive dust belts as well as large quantities of atomic and molecularlarge quantities of atomic and molecular gas.