Circumstellar disk—Dust and gas forming a disk in orbit around a star. Some circumstellar disks may contain planetary systems. Comet—A small solar system body made of ice and dust that moves ...

This image, acquired by the Subaru Telescope and its HiCIAO instrument, is the first to show spiral arms in a circumstellar disk. The disk itself is some 14 billion miles across, or about twice ...

We obtain flux ratios of hydrogen lines for these stars, finding that they have optically thin envelopes, except by 66 Oph and θ CrB, which do not show evidence of a circumstellar disk. γ Cas and ϕ ...

Why PMOs are unique PMOs form along stars, inheriting material from the outer edges of circumstellar disks. PMOs move in synchrony with the stars in their host cluster, unlike ejected planets.

At first the circumstellar disk is in a phase called an accretion disk, where mass is transported inward toward the star and angular momentum is transported outward. Planet formation likely occurs ...

Simulations show that these objects could form during violent collisions between circumstellar disks around young stars. These collisions, occurring at impressive speeds, create bridges of matter that ...

The star resides in a complex circumstellar environment, which includes a circumstellar disk, accretion streamers, jets and outflows. Previous observations of T CrA have suggested that it may be a ...

Each star is surrounded by a circumstellar disk — a rotating ring of gas and dust where planets are born. Using supercomputer-powered simulations, the team modeled the process. When two young ...