Linked from

The 45 pages that link to Binary star, each with the reason it gives.

• Center of massBroader topic: Their shared center of mass organizes the two stars’ orbital motion.

• Star systemBroader topic: It is a specific multiple-star arrangement within the broader class of star systems.

• Orbital eccentricityNarrower topic: Measured eccentricities reveal how elongated stellar orbits are and how they evolve.

• Orbital periodBroader topic: Its orbital period helps determine the stars' masses and separation.

• William HerschelBroader topic: Herschel's observations showed that some apparent pairs are physically bound and orbit one another.

• Planetary nebulaRelated: Companion stars can shape ejecta and may explain structures a solitary star struggles to produce.

• Two-body problemBroader topic: A well-separated binary can closely approximate two mutually gravitating point masses.

• Stellar massRelated: Orbital motion in binary systems provides the most direct stellar-mass measurements.

• OccultationRelated: Mutual stellar occultations in some binary systems help measure stellar sizes and orbits.

• Radial velocityRelated: Orbital motion produces changing radial velocities that expose spectroscopic binaries.

• Tidal interactionRelated: Tidal exchange can alter stellar rotation, orbit, and internal structure in close binaries.

• Wolf–Rayet starRelated: In some systems, a companion strips a star’s envelope and helps produce a Wolf–Rayet phase.

• SiriusNarrower topic: Sirius is one example of a gravitationally bound stellar pair.

• X-ray binaryNarrower topic: An X-ray binary is a compact-object-powered type of binary star system.

• Alpha CentauriNarrower topic: The A–B pair is a binary within the wider triple-star system.

• Binary pulsarNarrower topic: A binary pulsar is a compact, pulsar-containing member of this wider class.

• Doppler spectroscopyRelated: Alternating spectral shifts reveal orbital motion and can expose unseen companions.

• Reduced massBroader topic: Their relative orbit can be calculated using one effective body with reduced mass.

• Roche-lobe overflowNarrower topic: Roche-lobe overflow requires two stars whose combined gravity shapes the flow.

• Stellar ageRelated: Binary evolution can alter stars’ apparent ages through mass transfer or mergers.

• Roche lobeNarrower topic: A Roche lobe is defined for each star within such a system.

• Stellar dynamicsBroader topic: Binary orbits provide measurable constraints on stellar masses and gravitational interactions.

• Blue stragglerNarrower topic: Many blue stragglers form in binaries where interaction can add mass to one star.

• Mass–luminosity relationRelated: Binary orbits provide direct masses for testing the relation against observed luminosities.

• Millisecond pulsarNarrower topic: A companion commonly supplies the matter that recycles a neutron star into a millisecond pulsar.

• Eta CarinaeNarrower topic: Eta Carinae belongs to this broad class, though its stars and winds are exceptionally extreme.

• Solar massRelated: Binary orbits allow stellar masses to be measured and expressed in solar units.

• Stellar orbitBroader topic: Their mutual motion provides a direct setting for measuring stellar orbits.

• Henry Norris RussellRelated: Russell’s work on binary-star orbits helped determine stellar masses and test theories of stellar structure.

• Planetary systemCompared with: A binary star system can host planets, but its stars are not themselves planets.

• RigelRelated: Rigel’s close companion contributes to the system’s observed spectral and brightness variations.

• AlgolNarrower topic: Algol’s main eclipsing pair is a binary within a larger system.

• Cataclysmic variable starNarrower topic: Every cataclysmic variable is a close binary with two interacting stars.

• Kepler orbitBroader topic: In isolation, each star follows a Keplerian path relative to the other.

• Planetary nebula luminosity functionRelated: Binary interactions may help create luminous central stars in populations too old for single-star explanations.

• Stellar astronomyRelated: Orbital measurements in binaries provide some of the most direct stellar mass estimates.

• Epsilon Canis MajorisNarrower topic: Adhara consists of two gravitationally bound stellar components.

• Gamma CassiopeiaeRelated: A companion could help explain the star’s hard X-ray emission through interaction with its disk.

• LBV 1806−20Compared with: An unresolved companion could contribute light and alter estimates of LBV 1806−20’s intrinsic properties.

• Newton's theorem of revolving orbitsRelated: Apsidal rotation in eccentric binary orbits can test departures from simple inverse-square dynamics.

• NGC 7027Related: An unseen or close companion could help explain the nebula's asymmetric structure.

• Pi PuppisNarrower topic: Binary orbits are a basic form of stellar multiplicity relevant to interpreting the system.

• S-type starRelated: Mass transfer in a binary can create an enriched S-type star without internal recent synthesis.

• Type Ib and Ic supernovaeRelated: Mass transfer in binaries can remove a progenitor’s hydrogen envelope before core collapse.

• Zeta OphiuchiNarrower topic: Zeta Ophiuchi's inferred ejection history begins in a binary system.