meaning generally barred
A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.Bars are found in approximately two-thirds of all spiral galaxies. Bars generally affect both the motions of stars and interstellar gas within spiral galaxies and can affect spiral arms as well.Our own galaxy, the Milky Way, is classified as a barred spiral galaxy.ars are thought to be temporary phenomena in the lives of spiral galaxies; the bar structures decay over time, transforming galaxies from barred spirals to more regular spiral patterns. Past a certain size the accumulated mass of the bar compromises the stability of the overall bar structure.