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A galaxy has a redshift of z = 0.15 and you are asked to determine the wavelengths at
which its Call H and K lines would appear in the observed spectrum. The rest-frame
wavelengths of the Call H and K lines are o 3968.5 Å and 3933.6 Å, respectively.
NOTE: assume Ho 72 kms ¹ Mpc¹.
=
=

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