asymptotic giant branch , AGB (Abkürzung)

The star has reached the asymptotic giant branch of its evolution.

The S-process is believed to occur mostly in asymptotic giant branch stars.

This puts stars onto the asymptotic giant branch, a second red-giant phase.

These include red giants and supergiants, and asymptotic giant branch stars.

They occur periodically in asymptotic giant branch stars in a shell outside the core.

Most of the star's original mass was shed after it passed into the asymptotic giant branch stage, just prior to becoming a white dwarf.

Carbon and nitrogen is being continuously supplied by intermediate mass stars as they pass through the asymptotic giant branch.

This is most likely an asymptotic giant branch star that has passed through the main sequence and is evolving to become a white dwarf.

On the Hertzsprung-Russell diagram, it will be found on the asymptotic giant branch.

Being greater in mass, the primary is the first of the pair to evolve onto the asymptotic giant branch, where the star's envelope expands considerably.

Alternatively, it may be a star that has passed through the asymptotic giant branch stage and possesses a detached shell of dust.

Its path is almost aligned with its previous red-giant track, hence the name asymptotic giant branch.

Germanium is created through stellar nucleosynthesis, mostly by the s-process in asymptotic giant branch stars.

It is a red giant star with 54 times the radius of the Sun that is currently on the asymptotic giant branch.

Most stars retain more of their hydrogen after the first red giant phase, and eventually become asymptotic giant branch stars.

This change in composition occurred when the companion passed through the asymptotic giant branch and contaminated this star's photosphere.

It began life as a hot blue main sequence star, but now is a large cool asymptotic giant branch star with a degenerate helium core.

The asymptotic giant branch is the region of the Hertzsprung-Russell diagram populated by evolving low- to medium-mass stars.

In this last stage the star will observationally be a red giant again and structurally an asymptotic giant branch star.

Rare earth elements are heavier than iron and thus are produced by supernova nucleosynthesis or the s-process in asymptotic giant branch stars.

Helium fusion will begin when the core temperature reaches around 100 million kelvins and will produce carbon, entering the asymptotic giant branch phase.

Within the last two thousand years, the central star of the Ring Nebula has left the asymptotic giant branch after exhausting its supply of hydrogen fuel.

The low mass model, recently popularised by the Citizen Sky project, proposes that the primary is an evolved asymptotic giant branch star of 2-4M .

Planetary nebulae form from the gaseous shells that are ejected from low-mass asymptotic giant branch stars when they transform into white dwarfs.

Neutron flux in asymptotic giant branch stars and in supernovae is responsible for most of the natural nucleosynthesis producing elements heavier than iron.