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High-Velocity Star

Astronomy HighlandsHII region

High-Velocity Star
A star with a large space velocity. Such stars are halo stars passing through the disk of the galaxy at steep angles.
Homogeneity ...

 


High-Velocity Star
(a) A star whose U and/or V and/or W velocities are much greater or much less than zero. Such stars usually have eccentric orbits around the Galaxy.
(b) Late type stars whose spatial velocities are greater than 100 km s-1.

High-velocity stars are very old stars that do not share the motion of the Sun or most other stars in the solar neighbourhood which are in similar circular orbits around the centre of the Galaxy.

high-velocity star - (n.)
A star whose velocity relative to the solar system is large. As a rule, high-velocity stars are Population II objects following orbital paths that are highly inclined to the plane of the galactic disk.
homeobox - (n.) ...

High-velocity star with both weak metallic lines and weak CN bands. [JJ95]
CNO Stars ...

Its existence is known through two effects: the observation of old, high-velocity stars that are passing through the galactic plane, and the existence of a stable galactic disk containing stars all moving at about the same speed.

Iota Per is a high-velocity star, moving with respect to the Sun at a speed of 92 kilometers per second, several times that of most of the surrounding stars.

the nucleus and the halo of high-velocity stars and globular clusters that surround the disk of the galaxy. Irregular galaxies are predominantly, or sometimes exclusively, composed of population I stars.

See also: Galaxy, Velocity, Cluster, Sun, Light

Astronomy HighlandsHII region

 
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