4) Calculate the redshift of a galaxy with a recessional velocity of 0.68c. (
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- When a celestial object is moving away from the observer the light observed from the object will shift towards a longer wavelength. This is known as redshift.
- 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.
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- 5) The recessional velocity of a galaxy is found to be 0.52c. Calculate the redshift. (2Suppose there exists a hypothetical galaxy with mass MG around the center of which a solar system with mass Ms orbits with period T and radius r. Use the formula T = 2n(r³/GMG)¹/2 to calculate T if: MG = 1 x 1040 kg Ms = 2 x 1028 kg • R = 2.5 x 1020 m . .How the Hubble law allows you to estimate the distances to galaxies? Explain.
- The first picture is some background information need help answering the first question about the escape velocity from the andromeda Galaxy2) What will be the Hubble constant of a universe with an age of 80 billion years?If a galaxy is receding from us at 0.10c. Use Hubble's law to estimate the distance to this galaxy if the Hubble constant is 22 km/s per million light-years. (c = 3.00 × 108 m/s, 1 ly = 9.461 × 1015 m, 1 y = 3.156 × 107 S O 1.4 × 10^9 ly O 6.6 × 10^5 ly 6.6 × 10^5 Mly O 2.2 Mly