5) The recessional velocity of a galaxy is found to be 0.52c. Calculate the redshift.
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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…
- Redshift takes place when the source is moving away from the observer. This reduces the frequency which will in turn increase the wavelength shifting the spectrum to the red side.
- The redshift can be written in terms of recessional velocity as,
Here v is the recessional velocity, c is the speed of light, and z is the redshift.
Step by step
Solved in 3 steps
- The first picture is some background information need help answering the first question about the escape velocity from the andromeda GalaxyA 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.The critical density of a universe is around 5×10-27 kg/m³. Estimate the Hubble constant for this universe.
- Distance Based on the graph above, the expansion rate of galaxies near us is than galaxies that are farther away. O faster slower O the same rate VelocityA 7 GHz radio wave is emitted from a galaxy and is observed to be 5 GHz. Calculate the redshift of the galaxy.8) Calculate the velocity of a galaxy with a redshift of 0.37.