Which property of an exoplanet influences the amount of Doppler shift that it induces in the spectra of its parent star?
A) its size
B) its mass
C) the composition of its atmosphere
D) its age

Question

Quizplus · Accepted Answer

The mass of an exoplanet influences the amount of Doppler shift it induces in the spectra of its parent star because a more massive planet exerts a stronger gravitational pull on the star, causing a more noticeable shift in the star's motion and thus its spectral lines.

Which Property of an Exoplanet Influences the Amount of Doppler