The spectrum of a sun-like star is observed and a spectral absorption feature at wavelengthA = 650 nm is found to vary sinusoidally in wavelength with an amplitude AX = ±1 × 10-4 nmand a period of 4 days. Assuming that this variation is due to the presence of an unseen orbitingplanet, obtain an estimate for the mass of the planet and express your answer in units of theEarth's mass. State clearly any approximations or assumptions that are made when obtainingthe estimate.The planet transits in front of its star and its radius is determined to be R,an estimate of the equilibrium temperature of the planet, assuming that the heat from the star isfully absorbed by the planet and efficiently redistributed around its surface. Note that the hoststar is a sun-like star.= 5.8 × 107 m. Obtain

Change in wavelength due to doppler shift is given as , period is 4 days

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