barred spiral galaxy
Noun
Meaning
barred spiral galaxy (plural barred spiral galaxies)
(astronomy) A spiral galaxy with a central bar-shaped structure composed of stars.
Examples
It is a weakly barred spiral galaxy with loosely wound arms.
M105 is about a degree away from the M95/M96 pair; it is an elliptical galaxy of the 9th magnitude, also about 20 million light-years from Earth.sfn NGC 2903 is a barred spiral galaxy discovered by William Herschel in 1784.
NGC 4631 is a barred spiral galaxy, which is one of the largest and brightest edge-on galaxies in the sky.
NGC 4639 is a face-on barred spiral galaxy located main from Earth (redshift 0.0034).
The predominant theory regarding its formation is that the progenitor galaxy was a barred spiral galaxy whose arms had velocities too great to keep the galaxy's coherence and therefore detached.