Question

The star Tau Ceti has a measured parallax P=0.274 arc seconds, and a measured total flux F=1.256 x 10^-9 W/m^2. (1) what is the distance to Tau Ceti in parsecs and meters, and what is the luminosity of Tau Ceti in solar units? Show all your calculations, and take 1 L = 3.85 x 10^26 watts.

Answer 1