An optical spectrum of a galaxy has a magnesium absorption line at a wavelength of 531.3 nm. Given that the rest wavelength of the calcium line is 517.5 nm, what is the redshift of this galaxy? -1 Assuming a value for Hubble's Constant (Ho) of 67.6 km s-¹ Mpc-¹, estimate the distance to the galaxy in Megaparsecs. Note any assumptions you have made.

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(e) An optical spectrum of a galaxy has a magnesium absorption line at a wavelength of
531.3 nm. Given that the rest wavelength of the calcium line is 517.5 nm, what is the
redshift of this galaxy?
-1
-1
Assuming a value for Hubble's Constant (Ho) of 67.6 km s-¹ Mpc-¹, estimate the distance
to the galaxy in Megaparsecs. Note any assumptions you have made.
Transcribed Image Text:(e) An optical spectrum of a galaxy has a magnesium absorption line at a wavelength of 531.3 nm. Given that the rest wavelength of the calcium line is 517.5 nm, what is the redshift of this galaxy? -1 -1 Assuming a value for Hubble's Constant (Ho) of 67.6 km s-¹ Mpc-¹, estimate the distance to the galaxy in Megaparsecs. Note any assumptions you have made.
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