Briefly discuss and compare the three general types of galaxies.
Q: An important part of the lifecycle of galaxies like the Milky Way is the self regulation of…
A: Required : The correct choice.
Q: Why do the spiral arms of our galaxy move around the center of the galaxy? a) Spiral arms do not…
A: Normal spirals have arms that emanate from the nucleus, while barred spirals have a bright linear…
Q: A starburst galaxy produces only 50 new stars per year. (True or false)
A: A starburst galaxy is known for its high rate of star formation in comparison to the other galaxies.…
Q: What are the three main types of galaxies, and what are the peculiarities? What type is the Milky…
A: There are three main types of galaxies. They are, spiral galaxies, elliptical galaxies, and…
Q: You observe a faint galaxy and find that a spectral line normally found in the visible part of the…
A: The wavelength at which we see absorption lines are unique in themselves. This was used by…
Q: If a group of galaxies is revolving around its center at 240 miles/sec how fast is it moving in…
A: Let the galaxy's speed be denoted by v. The speed of the galaxies is 240 miles per second.
Q: how might you be misled if you studied only the brightest galaxies in a cluster?
A: There are some of the observations which may mislead if you studied only the brightest galaxies in…
Q: What if the Andromeda galaxy were to disappear How long before we would notice?
A: About 2.5 million light-years separate our solar system from the Andromeda galaxy. If it vanished,…
Q: The Virgo galaxy Cluster Much smaller than the Local Group. Contains 35 galaxies.…
A: the Virgo cluster forms the heart of the larger Virgo supercluster that comprises approximately…
Q: classification helped Darwin understand how creatures evolve. How has classification helped you…
A: Our universe contains million number of stars. These stars continuously emit light radiation, heat…
Q: If the active core of a galaxy contains a black hole of 10° Mo, what will the orbital period be for…
A: This problem can be solved using the formula for circular velocity and then dividing the distance by…
Q: If an O-type star and our galaxy were at the same distance, which would have a greater magnitude? a)…
A: Given: The O-type star and our galaxy at same distance. The apparent magnitude decreases with the…
Q: why are the shells visible around some elliptical galaxies significant?
A: The shell structures in the elliptical galaxies indicates the extremely low surface brightness and…
Q: 8. If a galaxy has an apparent radial velocity of 2000 km/s and the Hubble constant is 72 km/s/Mpc,…
A: Using Hubble's law we can solve this
Q: State three differences between the elliptic galaxy and the spiral galaxy.
A: Elliptic galaxy : the shape of elliptical galaxies are like a spheroid, or we say elongated sphere.…
Q: How many galaxies are there in the universe?
A: A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and…
Q: How do we know andromeda galaxy is moving towards us?
A: Andromeda Galaxy is the closest galaxy to Milky Way at 2.5 million light-years. Unlike other…
Q: There exists an element visible in the spectrum of galaxies that shows the following spectra when…
A: Introduction: The Doppler effect refers to the apparent shift in the wavelength of a wave when there…
Q: Describe the age and temperature of stars that make up spiral galaxies and their location.
A: A galaxy can be bombarded by other, smaller galaxies. Even if a galaxy is isolated, internal…
Q: ring galaxies often have nearby companions. What does that suggest?
A: The origin of ring galaxies is often debated. Some scientists believe that ring galaxies have formed…
Q: 3 Billion Light-years 2 Billion 2 Billion Light-years Light-years 2.5 Billion 2.5 Billion…
A: Introduction: Hubble's law is the observation that galaxies are moving away from the Earth at speeds…
Q: le of our g
A: Given: To explain the sharpley determines the sun and galaxy size as,
Q: How do galaxies form?
A: Two leading theories describe how the first galaxies were created. One says galaxies were born when…
Q: How do we know galaxies are moving away from us?
A: Electromagnetic radiations are affected by the Doppler shift. When the source is in relative motion…
Q: why does the galaxy shown below have so much dust in its disk? How big do you suppose the halo of…
A: A halo is an extended, almost spherical component of a galaxy which extends beyond the main, visible…
Q: A star in the Milky Way that is about 60 percent of the way out from the center of the galaxy has an…
A: Answer: Detail solution in below.
Q: On a rotation curve you notice two points, A and B. Point B is twice as far from the center of the…
A: Given information: Point B is twice as far from the center of the galaxy as point A. Let "ra" be the…
Q: how far away is the galaxy
A:
Q: Assume that an average globular cluster is 25 pc in diameter. If you observe a galaxy that contains…
A: For the small angle, the approximation is, sin θ≅ tan θ ≅ θIf the angle θ is expressed in…
Q: 3. The Androme da Galaxy hasa Muss of around 4x1042 kg and is 24k10" mauay What is you eScaße…
A: mass of galaxy = 4 * 1042 kg d = 2.4 *1 022 m Vescape = 2GM/d
Briefly discuss and compare the three general types of galaxies.
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- Express the number of stars in a typical galaxy in scientific notationwhat evidence is there that galaxies collide and merge?Assume that a typical galaxy contains about 200 billion stars and that there are more than 150 billion galaxies in the known universe. Estimate the total number of stars in the universe.
- What evidence can you cite that our galaxy has a galactic corona?Why can't the evolution of galaxies go from elliptical to spiral? From spiral to elliptical?Figure 2 shows the "rotation curve" of NGC 2742. It plots the “radial velocity (V)" (how fast material is moving either toward or away from us) that is measured for objects at different distances (R = radius") from the center of the galaxy. The center of the galaxy is at 0 kpc (kiloparsecs) with a speed of 9 km/sec away from us. (These velocities have been corrected for the observed tilt of the galaxy and represent true orbital velocities of the stars and gas.) 200 100 U4779 -100 As you can see, one side of the galaxy is moving with a negative velocity (spinning toward us), while the other side has a positive velocity (spinning away from us). Using Newton's gravity equation, we will be able to determine the gravitational mass of the entire galaxy and how the mass varies versus distance from the galaxy's center. -200 -8 8 -4 Radius (kpc) Read the following text carefully and follow the instructions: Select five radii spaced evenly from 0-10 kpc across the galaxy. Your selections should…