Cygnus X-2: The descendant of an intermediate-mass X-ray binary
The X-ray binary Cygnus X-2 (Cyg X-2) has recently been shown to contain a secondary that is much more luminous and hotter than is appropriate for a low-mass subgiant. We present detailed binary-evolution calculations which demonstrate that the present evolutionary state of Cyg X-2 can be understood...
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Published: |
Institute of Physics
2000
|
| Subjects: |