| |
 |
| Paper: |
SS433: a WR X-Ray Binary or a WR-Type Phenomenon? |
| Volume: |
367, Massive Stars in Interactive Binaries |
| Page: |
505 |
| Authors: |
Fuchs, Y.; Koch Miramond, L.; Abraham, P. |
| Abstract: |
We present mid-infrared spectra of the microquasar SS 433 obtained with the Infrared Space Observatory (spectroscopic mode of ISOPHOT) and compare them to the spectra of four Wolf-Rayet stars. The mid-infrared spectrum of SS 433 shows mainly H I and He I emission lines and is very similar to the spectrum of WR147, a WN8(h)+B0.5V binary with colliding winds. The 2–12 μm continuum emission corresponds to optically thin and partially optically thick free-free emission from which we calculate a mass loss rate of 1.4 − 2.2 × 10−4M⊙ yr−1 if the wind is homogeneous and a third of these values if it is clumped, which is consistent with a strong WN stellar wind. We propose that this strong wind outflows from a geometrically thick envelope of material surrounding the compact object like a stellar atmosphere, imitating the Wolf-Rayet phenomenon. |
|
|
|
|
|
