Question

Assuming the radiation from stars A, B, and C can reach Earth, which of the following blackbody curves would be visible?

A
B
C
all of the above

Answer 1

Star-A is brighter in the ultraviolet than it is at visible wavelengths.
But it still has plenty of intensity in visible wavelengths.

Star-B has its PEAK brightness at visible wavelengths.

Star-C is brighter in the infrared than it is at visible wavelengths.
But it still has plenty of intensity in visible wavelengths.

All three of these stars are 'visible', even though all three of them
are doing a lot of radiating at invisible wavelengths.