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Describe elliptical galaxies how are they different from spiral galaxies

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1 Answer. If an elliptical galaxy is free of gas then it can't really "collapse" effectively, since there is no mechanism to dissipate the kinetic energy of the stars.

Can elliptical galaxies turn into spiral galaxies?

We know this because spiral galaxies rotate quickly (on an astronomical scale), while elliptical galaxies do not. There is no way that an elliptical galaxy could spontaneously begin rotating, so there is no way an elliptical galaxy could turn into a spiral galaxy.

Why can t the evolution of galaxies go from elliptical to spiral quizlet?

Why can't the evolution of galaxies go from elliptical to spiral? Without the gas and dust that are needed for star formation, elliptical galaxies can never become spiral, which are home to star formation and young stars.

Do spiral galaxies normally evolve into elliptical galaxies?

In practice, an isolated spiral galaxy will gradually turn into a lenticular (a.k.a. S0) galaxy, not into an elliptical. As it uses up its gas in forming stars, star formation will then gradually cease, and the visible spiral arms will weaken and fade away; you will be left with a smooth disk of stars.

What can cause a spiral galaxy to become elliptical?

The universe is a violent place, and collisions between galaxies are frequent — indeed, the Milky Way is due to crash into the Andromeda Galaxy in a few billion years. When two spirals collide, they lose their familiar shape, morphing into the less-structured elliptical galaxies.

How do stars move in elliptical galaxies?

Unlike spirals, where the stars all orbit the center of the galaxy in the same direction, the stars in ellipticals move in random orbits.

How can you infer the existence of dark matter in a massive galaxy or in a cluster?

Astronomers can measure how much invisible mass is inside a cluster by the motion of the visible material, much as they do with galaxies. Researchers can also determine the amount of cluster dark matter by the way its gravity affects light.

Frequently Asked Questions

Do elliptical galaxies have old stars?

Most elliptical galaxies are composed of older, low-mass stars, with a sparse interstellar medium, and they tend to be surrounded by large numbers of globular clusters.

What is the most well known elliptical galaxy?

One of the most famous elliptical galaxies is Cygnus A, which is located roughly 600 million light-years from Earth and is an extremely bright radio source.

Which best describes elliptical galaxies?

Elliptical galaxies are defined by their relative lack of a sharply defined pattern or disk. They have no spiral arms, and are instead a ellipsoid bulge of stars orbiting with random inclinations (tilts) and directions around the center of mass.

How are the elliptical galaxies different from spiral galaxies?

How are elliptical, irregular, and spiral galaxies different? Elliptical galaxies are shaped like spheres or cucumbers and contain old stars. Spiral galaxies have a central disk surrounded by spiraling arms and possess new stars. Irregular galaxies have no distinct shape and have both old and new stars.

How does this elliptical galaxies differ in appearance from a spiral galaxy quizlet?

How does this elliptical galaxy differ in appearance from a spiral galaxy? There are no visable spiral arms. What is the most striking visual feature of this lenticular galaxy? It looks like the central bulge of a spiral galaxy but it has no spiral arms.

What are the differences between elliptical and irregular galaxies?

As their name suggests, elliptical galaxies are round or oval, with stars distributed fairly uniformly throughout. They have a bulge and halo, like spiral galaxies, but don't have the flat disk of stars. The stars in ellipticals tend to be older. Irregular galaxies have no identifiable shape or structure to them.

FAQ

What best describes an elliptical galaxy?
An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the four main classes of galaxy described by Edwin Hubble in his Hubble sequence and 1936 work The Realm of the Nebulae, along with spiral and lenticular galaxies.
Describe elliptical galaxies how are they different from spiral galaxies
Unlike spiral galaxies, elliptical galaxies have no features such as central bulges or arms.
How are elliptical galaxies characterized?
An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the four main classes of galaxy described by Edwin Hubble in his Hubble sequence and 1936 work The Realm of the Nebulae, along with spiral and lenticular galaxies.
Which one of the following is elliptical galaxy?
Elliptical Galaxy Examples Cygnus A - located about 600 million light-years from Earth. This galaxy is an extremely bright radio source in the universe. M87 - a giant elliptical galaxy that is located near the center of the Virgo cluster.
What do the numbers represent in the classification of elliptical galaxies?
Hubble gave the ellipticals numbers from zero to seven, which characterize the ellipticity of the galaxy - "E0" is almost round, "E7" is very elliptical. The spirals were assigned letters from "a" to "c," which characterize the compactness of their spiral arms.

Describe elliptical galaxies how are they different from spiral galaxies

What accurately describes an elliptical galaxy? The phrase that accurately describes an elliptical galaxy is that it has no new stars being formed. An elliptical galaxy refers to the galaxy that has an ellipsoidal shape. An elliptical galaxy can also be found around the center of the galaxy clusters.
What are 3 characteristics of elliptical galaxies? Elliptical galaxies have shapes that range from completely round to oval. They are less common than spiral galaxies. Unlike spirals, elliptical galaxies usually contain little gas and dust and show very little organization or structure.
Which elliptical galaxy is more spherical based on these classifications? E0 galaxies are more circular; whereas on the opposite end of the diagram, E7 galaxies are the most elliptical. An example of an elliptical galaxy is Messier 87, or M87. This elliptical galaxy is large, spherical and classified as an E0 galaxy in the Hubble classification scheme.
Which type of elliptical galaxy would be the roundest? E0 In the Hubble classification, the roundest galaxies are labelled E0 and the flattest, E7. In the Hubble Classification scheme, elliptical galaxies are allocated a number from 0 to 7 indicating their ellipticity. Unlike spiral galaxies, elliptical galaxies are not supported by rotation.
Which types of galaxies are most spherical in shape? Elliptical galaxies have a smooth ellipsoidal or spherical appearance, and they have far less structure than spiral galaxies do. Elliptical galaxies are typically found in galaxy clusters.
  • What would be the classification of an elliptical galaxy that is nearly spherical in shape?
    • Scientific definitions for elliptical galaxy The most common type of galaxy, ranging in shape from nearly spherical (classified as E0) to greatly elongated (classified as E7). Elliptical galaxies vary greatly in size and include some of the largest and smallest known galaxies.
  • Are elliptical galaxies spherical?
    • Elliptical galaxies are characterized by several properties that make them distinct from other classes of galaxy. They are spherical or ovoid masses of stars, starved of star-making gases.
  • Is E0 to E7 elliptical?
    • Hubble gave the ellipticals numbers from zero to seven, which characterize the ellipticity of the galaxy - "E0" is almost round, "E7" is very elliptical. The spirals were assigned letters from "a" to "c," which characterize the compactness of their spiral arms.
  • Which of the following describes an elliptical galaxy?
    • The phrase that accurately describes an elliptical galaxy is that it has no new stars being formed. An elliptical galaxy refers to the galaxy that has an ellipsoidal shape. An elliptical galaxy can also be found around the center of the galaxy clusters.
  • What is an elliptical galaxy quizlet?
    • Elliptical galaxies. Elliptical galaxies have no arms, however they have a central core, or nucleus (usually a very large black hole.) Stars located in the galaxies are spread out evenly around the core. Elliptical galaxies are not perfect circles but are nearly round. They are mostly made out of old stars.