A galaxy in a cluster has a crossing time of 2.3 Gyr. Given that the diameter of the cluster is 2.5 Mpc, calculate the average velocity of the galaxy in the cluster.
Q: Dark matter Consider the rotation curves of a galaxy with density profile p(r). Assuming that…
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Q: Consider a galaxy with a density profile of the type Ро p(r) = (r/ro)[(1+r/ro)²] ' where po is the…
A: Step 1: The mass profile of the galaxy can be obtained by integrating over the density profile as…
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A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…
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A: Average density of the matter in the universe ρavg=M43πd23=6Mπd2
Q: An 800 nm spectral line when observed from a galaxy is shifted to 920 nm. Calculate the redshift.
A: Redshift is the process by which light from moving sources is shifted to longer wavelengths.…
Q: 1. Use the energy conservation solution with = 0 and theorem in Section A.1.) of the wave equation…
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Q: Suppose a galaxy is moving away from Earth at a speed 0.78c. It emits radio waves with a wavelength…
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Q: A 2 GHz radio signal is detected from a galaxy as 0.86GHz. Estimate the relative velocity.
A: Like all waves light waves also get Doppler shifted. In the case of light waves, the Doppler shift…
Q: The most mass of our Milky Way is contained in an inner region close to the core with radius Ro.…
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Q: n. Estimate the relative velocity.
A: Given: Lo=2m L=0.75m To find: Relative velocity
Q: If a galaxy is 30 Mpc away from Earth and recedes at 400 km/s, what is Hubble's constant?
A: It is observed that galaxies are moving away from each other instead of coming closer. Based on…
Q: A galaxy is observed to be at 10.0 Mpc from Earth. If it is receding at 520 km/s, calculate the…
A: Edwin Hubble in his observations found that the galaxies were moving away from us instead of getting…
Q: A galaxy is oberverd to have emission lines of blue hydrogen lines of 434 nm. What will be the…
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Q: Suppose that a galaxy has 109 M⊙ of neutral HI gas with a temperature of about 10 K. Estimate the…
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Q: If a galaxy is 10.0 Mpc away from Earth and recedes at 520 km/s, what is Hubble's constant?
A: Edwin Hubble in his observations found that the galaxies were moving away from us instead of getting…
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A: Required : Fill in the gaps.
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Q: A galaxy is moving away from Earth. The "blue" hydrogen line at 434 nm emitted from the galaxy is…
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Q: The rest wavelength of the Hα transition of atomic hydrogen is 656.3 nm (recall that 1 nm=10-9 m).…
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Q: The CaII H and K lines have rest wavelengths of 396.85 nm and 393.36 nm, respectively. In the…
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Q: 4) Calculate the redshift of a galaxy with a recessional velocity of 0.68c. (
A: When a celestial object is moving away from the observer the light observed from the object will…
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- If a galaxy is 9.0 Mpc away from Earth and recedes at 510 km/s, what is H? What is the Hubble time?5) The recessional velocity of a galaxy is found to be 0.52c. Calculate the redshift. (2Suppose a galaxy is moving away from Earth at a speed of 0.78c. It emits radio waves of 0.680 m. What wavelength would we detect on Earth? with a wavelength
- You find a small satellite galaxy orbiting 66 kpc from the center of a larger galaxy at a speed of 210 km/s. What is the total mass of the galaxy-satellite galaxy system? (Give your answer in terms of MSun.)A galaxy is observed to recede at speed 140 km/s. If the Hubble constant is 70 km/s/ Mpc, how far is the galaxy?Please don't provide handwritten solution ...
- 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…Compute the critical density of the universe using the universal gravitational constant G= 6.67*10-11Nm2/kg2 and the Hubble constant of 73km/s/Mpc. B) What is the geometrical implication be if the universe has the critical density? Note: 1pc = 3.1*1016m