A description of an irregular galaxy

Irregular galaxy drawing

Hubble and further refined by astronomer Gerard de Vaucouleurs. Irregular galaxies have no definite structure. Many spirals have a halo of stars and star clusters arrayed above and below the disk. Links to external sites will be displayed in another window. It uses the three main types, and then further breaks them down by specific characteristics openness of spirals, size and extent of bars, size of galactic bulges. Approximately the same number of galaxies are seen in every direction you look except for a narrow 5 to 10 degree band along the Milky Way's mid-plane. NGC a dwarf irregular galaxy in the Local Group. The galaxies along that line-of-sight would be visible if the dust were not there. Three-dimensional maps of the universe have revealed surprisingly large structures in the universe.

Hubble and further refined by astronomer Gerard de Vaucouleurs. Finding the distances to the galaxies allows you to get a three-dimensional view of the galaxy positions.

IC a dwarf irregular galaxy in the Local Group.

spiral galaxy

See my copyright notice for fair use practices. Others have very little star formation going on in them even some of those with a lot of gas and dust still in them.

Irregular galaxy examples

The distribution of galaxies is not perfectly smooth. Galaxy Illustrations: Laurine Moreau — laurinemoreau. IC a dwarf irregular galaxy in the Local Group. A large majority of galaxies have these bars, and astronomers study them to understand what function they play within the galaxy. Irregular Galaxies Irregular galaxies are as their name suggests: irregular in shape. Positions On Our Sky Galaxies are distributed fairly uniformly across the sky. The stars are bunched up but the patches are randomly distributed throughout the galaxy. Large Magellanic Cloud: a dwarf irregular satellite galaxy of the Milky Way. Galaxies like to group together and those groups, in turn, congregate together. Some are undergoing a burst of star formation now, so many H II regions are seen in them. Irregular galaxies have no definite structure. Irregulars usually do not have enough structure to characterise them as spirals or ellipticals.

It uses the three main types, and then further breaks them down by specific characteristics openness of spirals, size and extent of bars, size of galactic bulges. Most ellipticals contain older, low-mass stars, and because they lack a great deal of star-making gas and dust clouds, there is little new star formation occurring in them.

Irregular galaxy names

Irregulars usually do not have enough structure to characterise them as spirals or ellipticals. If you focus on just the galaxy positions on the sky, you get just a two-dimensional picture. Our Milky Way is a spiral, as is the rather close-by Andromeda Galaxy. Spirals are large rotating disks of stars and nebulae, surrounded by a shell of dark matter. IC a dwarf irregular galaxy in the Local Group. Positions On Our Sky Galaxies are distributed fairly uniformly across the sky. NGC a dwarf irregular galaxy in the Local Group. Many spirals have a halo of stars and star clusters arrayed above and below the disk.

NGC a dwarf irregular galaxy in the Local Group. Irregulars are characterised by their structures or lack of them.

Irregular galaxy definition

Links to external sites will be displayed in another window. Others have very little star formation going on in them even some of those with a lot of gas and dust still in them. Small Magellanic Cloud: a dwarf irregular satellite galaxy of the Milky Way. The stars are bunched up but the patches are randomly distributed throughout the galaxy. They clump together into loose groups. Elliptical Galaxies Elliptical galaxies are roughly egg-shaped ellipsoidal or ovoid found largely in galaxy clusters and smaller compact groups. If you focus on just the galaxy positions on the sky, you get just a two-dimensional picture. IC a dwarf irregular galaxy in the Local Group. Positions On Our Sky Galaxies are distributed fairly uniformly across the sky. NGC a dwarf irregular galaxy in the Local Group. Spiral Galaxies Spiral galaxies are the most common type in the universe. Spirals are large rotating disks of stars and nebulae, surrounded by a shell of dark matter. Our Milky Way is a spiral, as is the rather close-by Andromeda Galaxy. Irregular Galaxies Irregular galaxies are as their name suggests: irregular in shape. Irregular galaxies have no definite structure.

Elliptical Galaxies Elliptical galaxies are roughly egg-shaped ellipsoidal or ovoid found largely in galaxy clusters and smaller compact groups.

Irregular galaxies have no definite structure.

Rated 8/10 based on 31 review
Download
Irregular galaxy