Irregular galaxy - Wikipedia
Irregular galaxies are commonly small, about one tenth the mass of the Milky Way galaxy, though there are also unusual cases of large irregulars like UGC 6697. Due to their small sizes, they are prone to environmental effects like colliding with large galaxies and intergalactic clouds.
Galaxy - Irregular, Star Clusters, Nebulae | Britannica
2024年12月21日 · Galaxy - Irregular, Star Clusters, Nebulae: Most representatives of this class consist of grainy, highly irregular assemblages of luminous areas. 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 galaxy | astronomy | Britannica
Irregular galaxies number only a few percent of all stellar systems and exhibit none of the regular features associated with spirals or ellipticals. Most representatives of this class consist of grainy, highly irregular assemblages of luminous areas.
Irregular galaxy - Simple English Wikipedia, the free encyclopedia
An irregular galaxy is a galaxy that does not have a distinct regular shape, like a spiral or an elliptical galaxy. [1] Irregular galaxies do not fall into any of the regular types of the Hubble sequence. They do not have a bulge in the centre, nor any trace of spiral structure. [2] They are quite common: they may make up a quarter of all galaxies.
Irregular Galaxies - Ask An Earth and Space Scientist
Irregular galaxies are the most unusual of galaxies. They don’t seem to fit into either the spiral or elliptical galaxy categories. They don’t have nice spiral arms, but they do have dark patches of gas and dust.
Galaxy Types - Science@NASA
Irregular galaxies have unusual shapes, like toothpicks, rings, or even little groupings of stars. They range from dwarf irregular galaxies with 100 million times the Sun’s mass to large ones weighing 10 billion solar masses.
Irregular Galaxy: Definition, Types, Shape, Facts
2024年12月1日 · Irregular galaxies are characterized by chaotic arrangements of stars, gas, and dust. Irregular galaxies do not possess spiral arms or a central bulge seen in other galaxy types. Many irregular galaxies resemble collided or merged galaxies due to their distorted shapes.
What is an irregular galaxy? | Cool Cosmos
What is an irregular galaxy? Irregular galaxies have no particular shape. They are among the smallest galaxies and are full of gas and dust. Having a lot of gas and dust means that these galaxies have a lot of star formation going on within them. This can make them very bright.
What Is An Irregular Galaxy? (In-depth Analysis)
Irregular galaxies comprise about a fourth of the total number of galaxies out there, so they are technically in the minority. In the Hubble Classification system, there are two main types of irregular galaxies: Irr I and Irr II.
Formation and Types of Irregular Galaxies - ThoughtCo
2020年1月10日 · There's another set of galaxies that are rather shapeless, don't necessarily have spiral arms, but do have a lot of sites where stars are forming. These odd, blobby ones are called "irregular" galaxies. Sometimes they get lumped in with the so-called "peculiar" galaxies due to their unusual shapes or other characteristics.
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