Which of the following extrasolar planets would be easiest to detect using the Doppler shift method?

Question

Quizplus · Accepted Answer

The Doppler shift method relies on detecting the small back-and-forth motion of the parent star caused by the gravitational tug of the orbiting planet. This motion creates a shifting of the star's spectral lines back and forth. The amplitude of the back-and-forth motion depends on the mass and distance of the planet from its parent star, as well as the mass of the parent star itself. Therefore, a massive planet close to its parent star would produce the largest amplitude shift, making it the easiest to detect using the Doppler shift method.

Which of the Following Extrasolar Planets Would Be Easiest to Detect