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The greatest number of galaxies belong to the type known as elliptical galaxies?
Wiki User
∙ 11y ago
The most common type of galaxy is a dwarf elliptical galaxy.
If you classify a dwarf galaxy as a galaxy, then that is your answer, however, if you don't, then a spiral galaxy will be the answer.
See the related question for more details.
Wiki User
∙ 11y ago
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What is the order in decreasing size of spiral giant elliptical dwarf elliptical and irregular galaxies?
Galaxies come in three main types: ellipticals, spirals, and irregulars. A slightly more extensive description of galaxy types based on their appearance is given by the Hubble sequence. Since the Hubble sequence is entirely based upon visual morphological type, it may miss certain important characteristics of galaxies such as star formation rate (in starburst galaxies) and activity in the core (in active galaxies).Elliptical galaxyThe Hubble classification system rates elliptical galaxies on the basis of their ellipticity, ranging from E0, being nearly spherical, up to E7, which is highly elongated. These galaxies have an ellipsoidal profile, giving them an elliptical appearance regardless of the viewing angle. Their appearance shows little structure and they typically have relatively little interstellar matter. Consequently these galaxies also have a low portion of open clusters and a reduced rate of new star formation. Instead the galaxy is dominated by generally older, more evolved stars that are orbiting the common center of gravity in random directions. In this sense they have some similarity to the much smaller globular clusters.The largest galaxies are giant ellipticals. Many elliptical galaxies are believed to form due to the interaction of galaxies, resulting in a collision and merger. They can grow to enormous sizes (compared to spiral galaxies, for example), and giant elliptical galaxies are often found near the core of large galaxy clusters.Starburst galaxies are the result of such a galactic collision that can result in the formation of an elliptical galaxy.Spiral galaxy and Barred spiral galaxyThe Sombrero Galaxy, an example of an unbarred spiral galaxy. Credit:Hubble Space Telescope/NASA/ESA.Spiral galaxies consist of a rotating disk of stars and interstellar medium, along with a central bulge of generally older stars. Extending outward from the bulge are relatively bright arms. In the Hubble classification scheme, spiral galaxies are listed as type S, followed by a letter (a, b, or c) that indicates the degree of tightness of the spiral arms and the size of the central bulge. An Sa galaxy has tightly wound, poorly-defined arms and possesses a relatively large core region. At the other extreme, an Sc galaxy has open, well-defined arms and a small core region.In spiral galaxies, the spiral arms have the shape of approximate logarithmic spirals, a pattern that can be theoretically shown to result from a disturbance in a uniformly rotating mass of stars. Like the stars, the spiral arms also rotate around the center, but they do so with constant angular velocity. That means that stars pass in and out of spiral arms, with stars near the galactic core orbiting faster than the arms are moving while stars near the outer parts of the galaxy typically orbit more slowly than the arms. The spiral arms are thought to be areas of high density matter, or "density waves". As stars move through an arm, the space velocity of each stellar system is modified by the gravitational force of the higher density. (The velocity returns to normal after the stars depart on the other side of the arm.) This effect is akin to a "wave" of slowdowns moving along a highway full of moving cars. The arms are visible because the high density facilitates star formation, and therefore they harbor many bright and young stars.NGC 1300, an example of a barred spiral galaxy. Credit:Hubble Space Telescope/NASA/ESA.A majority of spiral galaxies have a linear, bar-shaped band of stars that extends outward to either side of the core, then merges into the spiral arm structure. In the Hubble classification scheme, these are designated by an SB, followed by a lower-case letter (a, b or c) that indicates the form of the spiral arms (in the same manner as the categorization of normal spiral galaxies). Bars are thought to be temporary structures that can occur as a result of a density wave radiating outward from the core, or else due to a tidal interaction with another galaxy. Many barred spiral galaxies are active, possibly as a result of gas being channeled into the core along the arms.Our own galaxy is a large disk-shaped barred-spiral galaxy about 30 kiloparsecs in diameter and a kiloparsec in thickness. It contains about two hundred billion (2×1011) stars and has a total mass of about six hundred billion (6×1011) times the mass of the Sun.Other morphologiesHoag's Object, an example of a ring galaxy. Credit:Hubble Space Telescope/NASA/ESA.Peculiar galaxies are galactic formations that develop unusual properties due to tidal interactions with other galaxies. An example of this is the ring galaxy, which possesses a ring-like structure of stars and interstellar medium surrounding a bare core. A ring galaxy is thought to occur when a smaller galaxy passes through the core of a spiral galaxy. Such an event may have affected the Andromeda Galaxy, as it displays a multi-ring-like structure when viewed in infrared radiation.A lenticular galaxy is an intermediate form that has properties of both elliptical and spiral galaxies. These are categorized as Hubble type S0, and they possess ill-defined spiral arms with an elliptical halo of stars. (Barred lenticular galaxies receive Hubble classification SB0.)NGC 5866, an example of a lenticular galaxy. Credit:Hubble Space Telescope/NASA/ESAIn addition to the classifications mentioned above, there are a number of galaxies that can not be readily classified into an elliptical or spiral morphology. These are categorized as irregular galaxies. An Irr-I galaxy has some structure but does not align cleanly with the Hubble classification scheme. Irr-II galaxies do not possess any structure that resembles a Hubble classification, and may have been disrupted. Nearby examples of (dwarf) irregular galaxies include the Magellanic Clouds.Dwarf galaxyDespite the prominence of large elliptical and spiral galaxies, most galaxies in the universe appear to be dwarf galaxies. These tiny galaxies are about one hundredth the size of the Milky Way, containing only a few billion stars. Ultra-compact dwarf galaxies have recently been discovered that are only 100 parsecs across.Many dwarf galaxies may orbit a single larger galaxy; the Milky Way has at least a dozen such satellites, with an estimated 300-500 yet to be discovered. Dwarf galaxies may also be classified as elliptical, spiral, or irregular. Since small dwarf ellipticals bear little resemblance to large ellipticals, they are often called dwarf spheroidal galaxies instead
What is the greatest number of 48 36 and 24?
The greatest number in that set is 48. The greatest factor of any positive number is the number itself. The greatest common factor of that set is 12.
What is the greatest prime number of 5141?
The greatest prime number of 5141 is 71.
What is the greatest factor of 450?
The greatest factor of any number is the number itself.
How can I find a greatest factor of 96?
The greatest factor of any number is the number itself.
What is the estimated number of elliptical galaxies since there are 100 billion galaxies in the universe?
There are at least 15 billion elliptical galaxies in the observable universe, at distances up to 13 billion light years.
Why are elliptical galaxies brightest towards the center?
The center is crowded with stars, and the number of stars decreases farther out.
What types of stars do elliptical galaxies usually have?
Yes. However, the current rate of star creation is less than when the galaxies were younger.Yes. However, the current rate of star creation is less than when the galaxies were younger.Yes. However, the current rate of star creation is less than when the galaxies were younger.Yes. However, the current rate of star creation is less than when the galaxies were younger.
What is the estimated number of satellite galaxies since there are 100 billion galaxies in the universe?
The estimated number of satellite galaxies, given that there are 100 billion galaxies in the universe, is 170 billion.
What is the number sentence of the greatest product of a 1 digit number multiplied by a 1 digit number?
max[x*y | x and y belong to {0,1,2,3,4,5,6,7,8,9}]
What are the four galaxies?
The 4 types of galaxies are spiral, barred spiral,elliptical and irregular. 1. Spiral galaxy is easiest to identify due to its spiral structure and has its dust and gas scattered out evenly. Two good examples are the Milky Way Galaxy and Andromeda Galaxy. 2. Barred Spiral looks somewhat like a spiral galaxy, but in the first stages. Rather than having the same look as the spiral galaxy, the gas and dust in a barred galaxy are compressed near the center, with unevenness of the gas and dust, even though it still forms somewhat of a spiral. 3. Elliptical Galaxies are one of the largest galaxies with billions of solar systems clustered to appear as one star. With dust and gas scattered throughout, these galaxies appear to be a round shape and tend to hardly contain interstellar matter. 4. Irregular galaxy is also easy to identify because it is poorly structured and are even sometimes called dwarf irregular galaxies.
How are multiple galaxies are organized?
The four groups of galaxies are put into groups by the way they look, Spiral galaxies like our vary own milky way have tentacle like arms that make a spiral, there are also barred spiral galaxies that have only two arms in which give it a bar like appearance like the sculptor galaxy. We also have the elliptical and irregular galaxies. Elliptical galaxies have an ellipsoid or.. egg shaped look to them, Irregular galaxies don't have a particular look to them .. its and odd galaxy for sure one that always looks different from other galaxy. So i would say there classes depend on how they look.. there characteristics.
When a number of cluster of galaxies join together they form a of galaxies?
That's called a supercluster.
What is the estimated number of dwarf galaxies since there are 100 billion galaxies in the universe?
There are approximately 7 trillion dwarf galaxies in the universe.
How many galaxies are there and what are they named?
To the best knowledge, there are an infinite number of galaxies, which means they don't have names!
What is the number of galaxies in our solar syatem?
There are zero galaxies in our Solar System. Even the smallest galaxies are much, much larger than the solar system.
What best estimates the number of galaxies in the universe?
billions
