A) A spiral galaxy contains mostly younger stars. B) A spiral galaxy has a spherical halo. C) An elliptical galaxy lacks a disk component. D) Elliptical galaxies are not as big as spiral galaxies. E) There are no dwarf spiral galaxies, but there are dwarf ellipticals.
Feb 22, 2019 · Spiral arms are usually the most prominent features in the disk. Emission nebulae are mostly found in spiral arms. Which one of the following statements about galaxy evolution is false? Our Milky Way Galaxy and the Andromeda Galaxy are likely to form an elliptical galaxy at some time in the future. Astronomers can learn about the evolution of ...
the one that is farthest away. Which of the following types of galaxies appear reddest in color? ellipticals. Which types of galaxies have a clearly defined spheroidal component? all but irregulars. ... spiral arms. How does a lenticular galaxy differ from a normal spiral galaxy?
The central bulge of most spiral galaxies appear redder than their spiral arms because of _____.-young there are blue stars in the spiral arms and red stars in the center of galaxies. In which of the following galaxies would you be least likely to find an open cluster?
blue starsEither way, spiral arms contain many young, blue stars (due to the high mass density and the high rate of star formation), which make the arms so bright.
Many don't realize that galaxies like the Milky Way actually have “spiral arms.” These are pinwheels within the galaxy that are made up of stars, planets, asteroids and hydrogen clouds that reach out from the center of the galaxy to its edges.
The Milky Way is known to have two main spiral arms, the Perseus arm and the Scutum-Centaurus arm. Our galaxy also possesses two less pronounced arms, or spurs, called the Sagittarius and the Local Arm (which passes close to the sun).Jul 30, 2021
A galaxy with the designation "E0" is a(n) ( spiral / elliptical ) galaxy that appears to have a ( round / slightly elongated / highly elongated ) shape. A galaxy with the designation "E6" would be ( more / less ) elongated than a type "E2" galaxy.
Spirals exist only among flattened or 'disk' galaxies. These galaxies are differentially rotating--that is, the time to complete a full rotation increases with distance from the center. Differential rotation causes any disturbance in the disk to wind up into a spiral form.
This indicates that the arms are the result of a persistent pattern of stars rather than particular stars causing the structures. That pattern is caused by a density (pressure) wave that spirals from the edge of the disk to the center and back out again, creating the visible spiral arms of the galaxy.Feb 22, 2021
Most of the galaxies that scientists have discovered so far are spiral galaxies, as opposed to the other two main categories of galaxy shapes — elliptical and irregular. The Milky Way – the galaxy that includes Earth and our solar system – is an example of a spiral galaxy.Nov 19, 2018
Astronomers believe that galaxies have spiral arms because galaxies rotate – or spin around a central axis – and because of something called “density waves.” Galactic density waves are like water waves. Water itself doesn't move across a pond – instead, wave energy moves and affects the water as it passes.Sep 11, 2008
Spiral galaxies are mostly found in low-density regions of the Universe (i.e. with not many other galaxies nearby). It is rare to find them in the middle of galaxy clusters. Our own galaxy, the Milky Way, is thought to be a spiral galaxy with a central bar.
EllipticalsTypes of Galaxies Ellipticals, which account for about one-third of all galaxies, vary from nearly circular to very elongated. They possess comparatively little gas and dust, contain older stars and are not actively forming stars anymore.
In which region of the galaxy does star formation occur? The spiral arms. What is the difference between an E6 galaxy and an E2 galaxy? The E6 galaxy is more elliptical than the E2 galaxy.
These galaxies have few obvious features. They range from objects that are almost spherical, to those that are almost flat. Spherical ellipticals are classed as E0 galaxies, while flat ones are classed as E7, with the types in between being given the numbers E1 to E6.