Peculiar Galaxies: A peculiar galaxy is an irregular galaxy that has an abnormal shape (neither elliptical, spiral, nor lenticular) and/or has another unusual characteristic, like jets of gas spewing from the nucleus, unusual amounts of dust, low surface brightness, etc.
Collectively they are thought to make up about a quarter of all galaxies. Irregular galaxies are divided into two classifications: Im and IO. Irregulars usually do not have enough structure to characterise them as spirals or ellipticals. Peculiar Galaxies: A peculiar galaxy is an irregular galaxy that has an abnormal shape (neither elliptical, spiral, nor lenticular) and/or has another unusual characteristic, like jets of gas spewing from the nucleus, unusual amounts of dust, low surface brightness, etc. This document contains frames. If your browser does not support them, click here to view the first document of the set. Galaxy - Galaxy - Irregular galaxies: Most representatives of this class consist of grainy, highly irregular assemblages of luminous areas. Irregular galaxies are as their name suggests: irregular in shape. With just one billion stars, it appears to be a small galaxy in the process of being consumed by our own galaxy. An irregular galaxy is the catchall name given to any galaxy that does not neatly fit into one of the categories of the Hubble classification scheme. Other articles where Irregular galaxy is discussed: astronomy: Study of other galaxies and related phenomena: Irregular galaxies number only a few percent of all stellar systems and exhibit none of the regular features associated with spirals or ellipticals. They contain both young population I stars and old population II stars. Also, in some irregular galaxies, like M82, young stars eject energetic bubbles gas, giving the galaxy a blobby look.

The closest galaxy to the Milky Way happens to be an irregular galaxy called the Canis Major Dwarf. This document contains frames. Irregular galaxies often appear disorganized, and many are undergoing relatively intense star formation activity. Irregular galaxies are composed of gasses, dust, stars, nebulous formations, neutron stars, black holes and other elements common to all galaxies.

An extremely small number of them, however, are red and have a smooth, though nonsymmetrical, shape. When they were formed through gravitational interaction, the tidal forces were strong enough to eliminate all identified structure of what galaxy type it may have been previously. In general, irregular galaxies contain large amounts of gas and dust, and can exhibit a significant degree of star formation activity. They have neither noticeable symmetry nor an obvious central nucleus, and they are generally bluer in colour than are the arms and disks of spiral galaxies. Irregular galaxies do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a nuclear bulge nor any trace of spiral arm structure.. Galaxy - Galaxy - Irregular galaxies: Most representatives of this class consist of grainy, … If your browser does not support them, click here to view the first document of the set. An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy.

Also, in some irregular galaxies, like M82, young stars eject energetic bubbles gas, giving the galaxy a blobby look. Irregular galaxies are named so because they have no definite shape, but like all galaxies, they are in constant motion, moving outward and away from the center of our universe. Irregular II Galaxies (Irr II): The second type of irregular galaxy does not have any feature what so ever. The best example of an irregular that can be seen from Earth is the Small Magellanic Cloud.


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