Binary star system
Definition
A binary star system consists of two stars that orbit around a common center of mass. These systems can significantly influence the evolution and eventual death of both stars involved.
5 Must Know Facts For Your Next Test
- Binary star systems can exchange mass between the stars, affecting their evolution.
- The more massive star in a binary system often evolves faster and can transfer material to its companion.
- Type Ia supernovae occur in binary systems where a white dwarf accretes enough mass from its companion to exceed the Chandrasekhar limit.
- Gravitational waves can be emitted by closely orbiting neutron stars or black holes in binary systems.
- Binary interactions can lead to phenomena such as novae, X-ray binaries, and gravitational wave events.
Review Questions
- What is a binary star system?
- How does mass transfer between stars affect their evolution in a binary system?
- What astronomical event can result from a white dwarf in a binary star system exceeding the Chandrasekhar limit?
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Related terms
Supernova: An exploding star that has reached the end of its life cycle, often resulting from processes in binary systems.
Chandrasekhar Limit: The maximum mass (~1.4 solar masses) that a white dwarf can have before collapsing into a neutron star or black hole.
Gravitational Waves: Ripples in spacetime caused by accelerating masses, such as merging neutron stars or black holes in binary systems.
