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Consider a spiral galaxy that is moving directly away from Earth with a speed V = 3. 2 4 0 \ times 1 0 ^ 5 at its center, as shown in Figure 2 5-4 0 . The galaxy is also rotating about its center, such that points in its spiral arms are moving with a speed v = 5. 7 5 0 \ times 1 0 ^ 5 m / s relative to the center.
Question: What evidence supports the conclusion that the Milky Way is a spiral galaxy? O We see an even distribution of stars in all directions. O We see the spiral arms of our galaxy. We see a blob of bright stars in one direction and an even distribution of stars everywhere else. O We see a bright band of stars across the sky.
What is the major difference between an elliptical galaxy and a spiral galaxy? (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 ...
Question: Spiral galaxy rotation curves are generally fairly flat out to large distances. Suppose that spiral galaxies did not contain dark matter. How would their rotation curves be different?View Available Hint(s)The orbital speeds would fall off sharply with increasing distance from the galactic center.The rotation curve would be a straight ...
Question: 7. Spiral Galaxy - M51. This image is of a spiral galaxy (M51) that resembles what our Milky Way might look like if viewed from outside the galaxy Note how the curved spiral arms develop around the more quickly rotating central cluster of stars. Looking at the spiral arms from this viewpoint, in what direction is this galaxy rotating? a.
A. It is an eliptical galaxy because it looks red/yellow in color. B. It is a spiral galaxy, and we know becacuse photos of this same galaxy from above show its spiral arms. C. It is a spiral galaxy because we can see a dusty disk going across the center. D. It is an elliptical galaxy because it is elliptical in shape. 2).
Question: Consider a spiral galaxy that is moving directly away from Earth with a speed V = 3.340x105 m/s at its center, as shown in the figure. The galaxy is also rotating about its center, so that points in Earth its spiral arms are moving with a speed v = 5.650x105 m/s relative to the center. v Part A If light with a frequency of 8.273x1014 ...
Question: Describe how a spiral galaxy is thought to form. Drag the items on the left to the appropriate blanks on the right to complete the sentences. (Items can be used once or not at all.) spread out increased cools spin slowing accelerating decreased heats The extra density in some areas the gravitational pull, the expansion that occurred ...
A spiral galaxy, when seen face-on, appears cireular; the flux you observe per square arc- second of the galaxy is given by the relation (r) Loc r/r0, where r is the distance, in =ro arcseconds, from the center of the galaxy. Show that the total flux you observe from the spiral galaxy is F = 2mEorp. .
To discern the different parts of a spiral galaxy, one method is to analyze the orbits of stars and their populations, otherwise known as metallicity. Step 1 In order to discern the different parts of a spiral galaxy, scientists primarily rely on the analysi...