Two white dwarfs are found to lie within 16 arcseconds of each other on the sky. The probability that such an alignment occurs by chance is very small. Therefore, they are almost certainly physically associated, lying at the same distance fr0m the Sun.
One of the stars is relatively cool, with an effective temperature of 16,000 K and a measured radius of 0.01 times that of the Sun.
a) Calculate the distance to the star, given that the apparent visual magnitude of the star is 14.11 and the bolometric correction for 16,000 K is –1.3.
I use m_bol(2) - m_bol(1) = 5log(R_1/R_2) + 10log(T_1/T_2)
To find the apparent bolometric magnitude of the sun but how do I find the distance after this?