1. Sketch the radial-velocity curve of a binary whose stars are moving in nearly circular orbits that are a. perpendicular and b. parallel to our line of sight. 2. Sketch the light curve of an...

1. Sketch the radial-velocity curve of a binary whose stars are moving in nearly circular orbits that are a. perpendicular and b. parallel to our line of sight.

2. Sketch the light curve of an eclipsing binary whose stars are moving along highly elongated orbits with the major axes of the orbits a. pointed toward Earth and b. perpendicular to our line of sight.