Mass loss

Definition

Mass loss is the process by which a star loses its mass over time, primarily through stellar winds and other ejection mechanisms. This phenomenon significantly influences the star's evolution and eventual end state.

5 Must Know Facts For Your Next Test

1. Mass loss occurs in various stages of a star's life, particularly during the red giant and supergiant phases.
2. Stellar winds are a primary driver of mass loss, especially for massive stars with strong radiation pressure.
3. The rate of mass loss can affect a star's lifespan and its transition to subsequent evolutionary stages.
4. Massive stars lose more mass compared to low-mass stars, impacting their final fates as supernovae or black holes.
5. Observing mass loss helps astronomers understand the chemical enrichment of the interstellar medium.

Review Questions

Related terms

Red Giant:

A late stage in a star's life where it expands significantly and begins losing mass through stellar winds.

Stellar Wind:

A flow of charged particles ejected from the outer layers of a star, contributing to its mass loss.

Supernova:

A powerful explosion marking the death of a massive star, often influenced by prior significant mass loss.