Author Question: Which of the following stars are brightest at ultraviolet wavelengths? A) G and K stars B) M ... (Read 70 times)

rachel9 · **on:** Jul 27, 2018

Which of the following stars are brightest at ultraviolet wavelengths?

A) G and K stars
B) M stars
C) A and F stars
D) O and B stars
E) None; all stars are brightest at optical wavelengths.

Question 2

What type of exoplanet observation allows unambiguous determination of the exoplanet's mass and radius? Can this be done with most exoplanets?

What will be an ideal response?

brittrenee · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

D

Answer to Question 2

Only planetary transits allow unambiguous determination of exoplanets' mass and radius. As this requires the system to be seen edge-on, such determinations are rare.