Gravitational Microlensing by Random Motion of Stars ...
ウェブ1995年3月8日 · Gravitational Microlensing by Random Motion of Stars: Analysis of Light Curves. Joachim Wambsganss, Tomislav Kundic. We present a quantitative analysis of …
Gravitational Microlensing by Random Motion of Stars: Movie ...
ウェブWe present a quantitative analysis of the effect of microlensing caused by random motion of individual stars in a galaxy lensing a background quasar. We calculate a large …
ウェブThus the collision of two galaxies is inelastic, just as the collision of two lead balls is inelastic—in both cases, ordered motion is converted to random motion, of the stars in …
Stellar kinematics - Wikipedia
Stars within galaxies may be classified based on their kinematics. For example, the stars in the Milky Way can be subdivided into two general populations, based on their metallicity, or proportion of elements with atomic numbers higher than helium. Among nearby stars, it has been found that population I stars with higher metallicity are generally located in the stellar disk while older populatio…
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ウェブThe dominant motion of stars (and gas) in the Galactic disk is rotation (around the centre of the Galaxy), and these motions occur on nearly circular orbits. The stars in the thick …
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Rotational Brownian motion (astronomy) - Wikipedia
ウェブIn astronomy, rotational Brownian motion is the random walk in orientation of a binary star's orbital plane, induced by gravitational perturbations from passing stars.
8.4: Velocity and Mass Distributions in Galaxies
ウェブ2023年3月16日 · As we observe the random motions of the stars in an elliptical galaxy, some of the stars will be moving toward us relative to the rest of the galaxy. They will have blue-shifted absorption lines relative to the average for the galaxy
The stellar orbit distribution in present-day galaxies …
ウェブ2018年1月1日 · The orbits dominated by ordered rotation, with near-maximum circularity λ z ≈ 1, are called kinematically cold, and the orbits dominated by random motion, with low circularity λ z ≈ 0, are ...
THE ORIGIN OF LARGE PECULIAR MOTIONS OF STAR ...
ウェブ2009年11月2日 · They showed that star-forming regions and young stars have large peculiar motions as large as 30 km s –1 with complex structures. Such a large peculiar …
Peculiar velocity - Wikipedia
ウェブIn galactic astronomy, peculiar motion refers to the motion of an object (usually a star) relative to a Galactic rest frame. Local objects are commonly examined as to their …
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