Examples of using Protoplanetary disk in English and their translations into Norwegian
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Further information: Protoplanetary disk.
Protoplanetary disks have been observed around a very high fraction of stars in young star clusters.
Formation of stars and protoplanetary disks.
It stops when the protoplanetary disk disappears or when the end of the disk is attained.
Artist's conception of a protoplanetary disk.
Providing images of protoplanetary disks such as HL Tau(see eso1436) which transformed the previously accepted theories about the planetary formation.
An artist's concept of a protoplanetary disk.
Old theories were unable to explain how their cores could form fast enough to accumulate significant amounts of gas from the quickly disappearing protoplanetary disk.
An artist's concept of a protoplanetary disk.
Jupiter's regular satellites are believed to have formed from a circumplanetary disk, a ring of accreting gas andsolid debris analogous to a protoplanetary disk.
An artist's impression of protoplanetary disk.
In this model giant planet formation is divided into two stages: a accretion of a core of approximately 10 M⊕ andb accretion of gas from the protoplanetary disk.
Formation of stars and protoplanetary disks[edit].
As a result, they are several times more massive than in the inner part of the protoplanetary disk.
The ultimate dissipation of protoplanetary disks is triggered by a number of different mechanisms.
A protostar forms at the core,surrounded by a rotating protoplanetary disk.
Use of the term"accretion disk" for the protoplanetary disk leads to confusion over the planetary accretion process.
Some meteorites contain microscopic diamonds that were formed when the solar system was still a protoplanetary disk.
The Hubble Space Telescope has revealed hundreds of protoplanetary disks(proplyds) in the Orion Nebula.
A high proportion of metals in a star correlates to the amount of heavy material initially available in the protoplanetary disk.
Because planetesimals are so numerous,and spread throughout the protoplanetary disk, some survive the formation of a planetary system.
Cha 110913-773444(sometimes abbreviated Cha 110913)is an astronomical object surrounded by what appears to be a protoplanetary disk.
The first one is the disk instability model, where giant planets form in the massive protoplanetary disks as a result of its gravitational fragmentation see above.
Protoplanetary disks around T Tauri stars differ from the disks surrounding the primary components of close binary systems with respect to their size and temperature.
Lt;ref name=Montmerle2006/> Because planetesimals are so numerous,and spread throughout the protoplanetary disk, some survive the formation of a planetary system.
The protoplanetary disk may also be considered an accretion disk for the star itself, because gases or other material may be falling from the inner edge of the disk onto the surface of the star.
Various simulations have demonstrated that the merger of embryos in the inner part of the protoplanetary disk leads to the formation of a few Earth-sized bodies.
A protoplanetary disk forms by gravitational collapse of a molecular cloud, called a solar nebula, and then evolves into a planetary system by collisions and gravitational capture.
Most of the collapsing mass collected in the centre, forming the Sun,while the rest flattened into a protoplanetary disk of loose dust, out of which the planets, moons, asteroids, and other Solar System bodies formed.
The protoplanetary disk is sometimes referred to as an accretion disk, because while the young T Tauri-like protostar is still contracting, gaseous material may still be falling onto it, accreting on its surface from the disk's inner edge.