How fast and in what direction must galaxy A be moving relative to us if an absorption line found at 550 nm (green) for a stationary galaxy is shifted to 450 nm (blue) for A? (10
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A: Given: Density,ρ=2.7×10-27kg/m3Speed of light,c=3×108m/sEinstein's constant,κ=1.86×10-26m/kg Albert…
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Q: (b) Draw the shape of the Milky Way for a spaceship with a velocity of 20%, 50%, and 90% of the…
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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: Suppose a galaxy is moving away from Earth at a speed 0.78c. It emits radio waves with a wavelength…
A: Doppler effect is the change in frequency and wavelength of a wave due to the motion of the source…
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A: When the source of electromagnetic radiation is moving away from the observer the radiation will…
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A: Hubble Law It state that distant galaxies are moving away from our earth with a recession…
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: n. Estimate the relative velocity.
A: Given: Lo=2m L=0.75m To find: Relative velocity
Q: When a distant galaxy is observed the violet hydrogen line of 410.173 nm was recorded at 610 nm.…
A: When it comes to light the Doppler effect has to be modified. Light does not require any medium to…
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…
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Q: If we knew that a distant galaxy were 8.56 x 1021 meters away from earth, what velocity could we…
A: The velocity of a distant galaxy can be calculated using Hubble's Law. Hubble's Law states that the…
Q: A galaxy is oberverd to have emission lines of blue hydrogen lines of 434 nm. What will be the…
A: When the relative speed between observer and source gets close to the speed of light, relativistic…
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…
Q: Based on Figure 1 below, which galaxies are moving away from us the fastest? Velocity (km/sec) 2000…
A: first option is correct
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A: Given: The O-type star and our galaxy at same distance. The apparent magnitude decreases with the…
Q: Can we measure distances to other galaxies using parallax? Why or why not?
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Q: If a galaxy is 8.9 Mpc away from Earth and recedes at 497 km/s, what is H, (in km/s/Mpc)? km/s/Mpc…
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A: Given:- λobs = 759 nm.λ0 = 656 nm
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Q: Given the age of a universe as 15.6 billion years. A galaxy is found to be moving at 620 km-s-1 from…
A: Hubble time is the amount of time it took for a universe to reach its current state. For calculating…
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: 6. If a spiral galaxy is 20' in diameter and you measure its distance to be 1 Mpc, what is its…
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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 is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H, (in km/s/Mpc)? | km/s/Mpc…
A: Hubble discovered that galaxies appear to move away from Earth and the velocity of recession (v) is…
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…
Q: If a galaxy is 9.0 Mpc away from Earth and recedes at 510 km/s, what is H? What is the Hubble t
A: Hubble's law states that galaxies are moving away from Earth and the farther they are faster they…
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- A galaxy containing HI gas is moving with a velocity of 150 km/s away fromus (along the line of sight). Calculate the frequency at which we will observethe HI emission line.5) The recessional velocity of a galaxy is found to be 0.52c. Calculate the redshift. (2You 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.)
- Suppose an alien race on a distant planet tries to send a message to us, with a laser (light). However, we were unaware that there is a stellar-mass black hole almost directly between us and them. How would this complicate our attempts to locate their position in the Galaxy? O Gravitational lensing would make the signal appear to be coming from a different location O The information carried by the laser (light) would be altered O It would not matter The black hole absorbs all of the lightWhen you look at distant galaxy through a telescope, how is it that you are looking backward in time?A galaxy is observed to have emission lines of blue hydrogen lines of 434 nm. If the galaxy has a a recessional velocity of 0.916c calculate the observed wavelength.