Describe the distribution of globular clusters within the galaxy, and explain what that implies about the size of the galaxy and our distance from its center
Q: (b) What is the ratio of the size of the Milky Way to the distance to the sun? dMw//dsun = 10*10:1…
A: b) The ratio of the size of milky way to the distance to the sun is given by,
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Q: An important part of the lifecycle of galaxies like the Milky Way is the self regulation of…
A: Required : The correct choice.
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A: Normal spirals have arms that emanate from the nucleus, while barred spirals have a bright linear…
Q: = 2. Using a Hubble constant of Ho 70 km/s/Mpc, find the distance to the galaxy cluster that moves…
A: Distance to the galaxy cluster is 92.8571 Mpc or 3.029×108light years. Explanation:Hubble's law…
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A: The shape of the galaxies says the evidence of the tidal disruption.
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A: Reason why galaxies have different shapes : When we gaze up into the night sky, we can see stars…
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A: Sombrero galaxies are referred to spiral galaxy.
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A: This problem can be solved using the formula for circular velocity and then dividing the distance by…
Q: Globular clusters contain no stars more massive than the Sun. Which of the following seems like the…
A: First, we are aware that no stars more massive than the Sun can be found in globular clusters. Any…
Q: Advanced Physics Discuss briefly how i) the value of rotation parameters of the galaxy can be…
A: Advanced Physics Discuss briefly how i) the value of rotation parameters of the galaxy can be…
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: 5. A star whose temperature is 8000 K has a peak wavelength of 362.5 nm, according to Wien's Law. If…
A: The peak wavelength by observer on earth = 362.365nm.Your required explanation is given below. Thank…
Q: 6. If a spiral galaxy is 20' in diameter and you measure its distance to be 1 Mpc, what is its…
A:
Q: Briefly discuss and compare the three general types of galaxies.
A: We need to discuss and compare the three general types of galaxies.
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Q: The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical…
A: Population 1 stars are the newer and younger stars.
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Q: Hotter, more massive stars are virtually absent from globular clusters. What does this tell us?…
A: Globular clusters are clusters of stars, that are nearly symmetrical and round shaped clusters.…
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: 6) The redshift of a galaxy is observed to be 1.5. Calculate the recessional velocity of the galaxy.
A: Redshift takes place when the source is moving away from the observer. This reduces the frequency…
Q: If a galaxy contains a supernova that at its brightest has an apparent magnitude of +21, how far…
A: Apparent magnitude mV = + 21 Absolute magnitude MV = - 17
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A: The total mass of the disk can be calculated by integrating the surface mass density over the entire…
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A: Answer: Detail solution in below.
Q: Which of the following best describe the reasons we have to infer that a supermassive blackhole…
A: Actually the blackhole is a very higher density object . According to the general theory of…
Q: Globular clusters revolve around the Galaxy in highly elliptical orbits. Where would you expect the…
A: A globular cluster is densely packed group of stars bound together by gravity. These clusters are…
Q: Which one of these types of galaxies do you expect to have the largest star formation activity?…
A: A galaxy which has high relative flux density, which shows it has a dense region that helps in more…
Q: Describe the structure of the Milky Way galaxy, including its spiral arms, central bulge, halo, and…
A: The Milky Way galaxy is a barred spiral galaxy, which means it has a central bar-shaped structure…
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- The first picture is some background information need help answering the first question about the escape velocity from the andromeda GalaxyWhich of the following statements best describes our galaxy, the Milky Way? O A bulge dominated system, with little or no disk, approximately 27,000 light years across. A disk 100,000 lightyears across filled with gas and stars, with a bulge of older stars in the galaxy centre. A disk 27,000 light years across with a bulge of gas and newly formed stars in the galaxy centre. O A spherical (elliptical) galaxy, 100,000 lightyears across, with no gas and no new stars.38. Many RR Lyrae stars are found in open clusters in the plane of the galaxy. True False
- The Tully-Fischer method relies on being able to relate the mass of a galaxy to its rotation velocity. Stars in the outer-most regions of the Milky Way galaxy, located at a distance of 50 kpc from the galactic centre, are observed to orbit at a speed vrot determine the mass in the Milky Way that lies interior to 50 kpc. Express your answer in units of the Solar mass. 250 km s-1. Using Kepler's 3rd Law,The type of galaxy that consists almost entirely of old stars and is thus less blue (more yellow and reddish) than the other types is [Select] and our Milky Way Galaxy is a [Select] barred spiral elliptical irregular F3 [Select] जी 4 4») Q Search DII de in % 5 spiral all of these galaxy types consist mostly of very old stars A 2 LO F7 & 7 PrtScn 8 Home P EndThe Milky Way grew through merging with many smaller galaxies. What are the observational signatures of this process? O The motion of old stars in the bulge and halo of our galaxy are randomly orientated, meaning they were formed from collisions of small, accreted, galaxies all on different paths. O The ordered motion of the bulge / halo stars means that they came from many objects. The random motions of stars in the disk means it was formed from collisions of small, accreted, galaxies. O The motion of young stars in the disk are all in the same direction, meaning they came in as seperate objects.
- A galaxy's rotation curve is a measure of the orbital speed of stars as a function of distance from the galaxy's centre. The fact that rotation curves are primarily flat at large galactocen- tric distances (vrot(r) ~ constant) is the most common example of why astronomer's believe dark matter exists. Let's work out why! Assuming that each star in a given galaxy has a circular orbit, we know that the accelera- tion due to gravity felt by each star is due to the mass enclosed within its orbital radius r and equal to v?/r. Here, ve is the circular orbit velocity of the star. (a) Show that the expected relationship between ve and r due to the stellar halo (p(r) xr-3.5) does not produce a flat rotation curve. (b) Show that a p(r) ∞ r¯² density profile successfully produces a flat ro- tation curve and must therefore be the general profile that dark matter follows in our galaxy.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…Suppose you have obtained spectra of several galaxies and have measured the observed wavelength of the H-Alpha line (rest wavelength = 656.3 nm) to be Galaxy 1: 658.1 nm. Galaxy 2: 667.1 nm. Galaxy 3: 677.6 nm. Calculate the radial velocity of each of these galaxies.