An Astronomer Discovers a New Star and Wants to Measure

Multiple Choice

An astronomer discovers a new star and wants to measure its temperature. She would typically do this by:

A) measuring the Doppler shift of its spectral lines
B) making a blackbody curve and finding the wavelength of the peak (maximum)
C) measuring the intensity of radio waves the star gives off
D) measuring how much light the star reflects
E) sending a graduate student with a very long (and durable) thermometer to the star's vicinity