- #1

- 53

- 0

## Homework Statement

we are looking at two stars in the eridani system, eri B and eri C. the period of the system is 247.9 years. the system's measured trigonometric parallax is 0.201 arcseconds and the tru angular extent to the semimajor axis of the reduced mass is 6.89". the ratio of distances of eri b and c from the center of mass is a

_{b}/a

_{c}= 0.37. what is the mass of Eri B and C in terms of the mass of the sun?

## Homework Equations

M

_{b}R

_{b}+ M

_{c}R

_{c}/ M

_{b}+ M

_{c}

## The Attempt at a Solution

im kind of confused about how to start this off. i thought about using the distance of both the stars from the sun as the reference point for the formula but that doesnt really work. If anyone could give me a rough idea of what direction to go with this problem i would really appreciate it