Using v=d/t to find diameters of stars
The geometry of the eclipsing X-ray binary problem
To simplify the problem, we make two assumptions when we use this method:
- The orbit of the X-ray emitting star is circular and its
velocity is constant.
- The orbit of the observed star is large and the system is
distant, so that light rays from the source are parallel.
- The plane of the binary system is at 90 degrees, edge on to our line of sight. (The actual orbit is at 83 degrees.)
|Show me an example light curve and a model of orbital periods of binary systems|
|Tell me more about HT Cas|