You Observe Two Stars in a Visual Binary System Using

question 12

Multiple Choice

You observe two stars in a visual binary system using a blue filter that is centered at a wavelength of 550 nm and a red filter that is centered at a wavelength of 650 nm. Star A has a temperature of 10,000 K, while star B has a temperature of 4000 K, and you know that both stars are the same size. Which star will be the brightest in each filter?

• A) Star A is the brightest in the blue filter, and star B is the brightest in the red filter.
• B) Star B is the brightest in the blue filter, and star A is the brightest in the red filter.
• C) Star A is the brightest in both filters.
• D) Star B is the brightest in both filters.
• E) Both stars have the same brightness in each filter.