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Astrometrie (Paralaxa)×Gravitační mikrolensing×Kinematic Distance×
OborAstronomieAstronomieAstronomie
RodinaProcess / pipelineProcess / pipelineProcess / pipeline
Rok vzniku183819861957
TvůrceFriedrich Wilhelm BesselBohdan PaczynskiBert Westerhout
TypAstrometric distance measurementObservational detection methodKinematic measurement method
Původní zdrojESA (1997). The Hipparcos and Tycho Catalogues. Astrometric and photometric star catalogue. European Space Agency Technical Reports, SP-1200. link ↗Paczynski, B. (1986). Gravitational microlensing by the galactic halo. Astrophysical Journal, 304, 1-5. DOI ↗Reid, M. J., et al. (2014). Trigonometric parallaxes of high mass star forming regions: the structure and kinematics of the Milky Way. Astrophysical Journal, 783(2), 130. DOI ↗
Další názvyStellar Parallax, Trigonometric Parallax, Parallax Distance MethodMicrolensing, Gravitational Lensing MethodGalactic Kinematic Distances, Rotation-Curve Distance, Kinematic Parallax
Příbuzné333
ShrnutíAstrometric parallax is the foundational geometric method for measuring distances to nearby stars, based on observing the apparent shift in a star's position as Earth orbits the Sun. First successfully demonstrated by Friedrich Wilhelm Bessel in 1838 for the star 61 Cygni, parallax remains the most direct and reliable distance measurement in astronomy, anchoring the entire cosmic distance ladder.Gravitational microlensing is an observational technique that exploits Einstein's prediction that massive objects bend light. When a star or planet passes in front of a distant star from our perspective, its gravity acts as a lens, magnifying and distorting the background star's light. First proposed by Bohdan Paczynski in 1986, this method has discovered hundreds of exoplanets and provides unique sensitivity to low-mass planets and dark matter.Kinematic distance is a method for estimating distances to objects in the Milky Way using their observed radial velocities and the known rotation curve of the Galaxy. Developed in the 1950s by Bert Westerhout and others, this technique enables distance determination to distant molecular clouds and masers without trigonometric parallax or individual object luminosities.
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ScholarGatePorovnat metody: Astrometry (Parallax) · Gravitational Microlensing · Kinematic Distance. Získáno 2026-06-19 z https://scholargate.app/cs/compare