A barred irregular galaxy is an irregular version of a
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Barred spiral galaxy — A barred spiral galaxy is a spiral galaxy with a central bar shaped structure composed of stars. Bars are found in approximately half of all spiral galaxiescite book author=J. Binney, S. Tremaine year=1987 title=Galactic Dynamics… … Wikipedia
Irregular galaxy — An irregular galaxy is a galaxy that does not fall into any of the regular classes of the Hubble sequence. These are galaxies that feature neither spiral nor elliptical morphology. They are often chaotic in appearance, with neither a nuclear… … Wikipedia
Galaxy groups and clusters — are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation.[1] They form the densest part of the large scale structure of the universe. In models for the gravitational formation of… … Wikipedia
Galaxy — This article is about the astronomical structure. For other uses, see Galaxy (disambiguation). NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light years in diameter and approximately 60 million light… … Wikipedia
Galaxy morphological classification — Artist s concept illustrating bulge no bulge spiral galaxies. Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance. There are several schemes in use by which galaxies… … Wikipedia
galaxy — [gal′ək sē] n. pl. for 2 & 3 galaxies [ME galaxie < LL galaxias < Gr, Milky Way < gala, milk: see GALACTIC] 1. [usually G ] MILKY WAY the: often with the 2. a large, independent system of stars, typically containing millions to hundreds… … English World dictionary
galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… … Universalium
Dwarf galaxy — UGC 9128 is a dwarf irregular galaxy, it probably contains only around one hundred million stars. A dwarf galaxy is a small galaxy composed of up to several billion stars, a small number compared to our own Milky Way s 200 400 billion stars. The… … Wikipedia
Spiral galaxy — A spiral galaxy is a galaxy belonging to one of the three main classes of galaxy originally described by Edwin Hubble in his 1936 work “The Realm of the Nebulae” [cite book |last=Hubble |first=E. P. |authorlink=Edwin Hubble |title=The Realm of… … Wikipedia
Interacting galaxy — NGC 3169 (left) and NGC 3166 (right) display some curious features, demonstrating that each member of the duo is close enough to feel the distorting gravitational influence of the other. Iimage from the Wide Field Imager on the MPG/ESO 2.2 metre… … Wikipedia
