| Autor: |
Lomax, JR, Nazé, Y, Hoffman, JL, Russell, CMP, De Becker, M, Corcoran, MF, Davidson, JW, Neilson, HR, Owocki, S, Pittard, JM, Pollock, AMT |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| ISSN: |
0004-6361 |
| Popis: |
We present results from a study of the eclipsing, colliding-wind binary V444 Cyg that uses a combination of X-ray and optical spectropolarimetric methods to describe the 3D nature of the shock and wind structure within the system. We have created the most complete X-ray light curve of V444 Cyg to date using 40 ks of new data from Swift, and 200 ks of new and archived XMM-Newton observations. In addition, we have characterized the intrinsic, polarimetric phase-dependent behavior of the strongest optical emission lines using data obtained with the University of Wisconsin's Half-Wave Spectropolarimeter. We have detected evidence of the Coriolis distortion of the wind-wind collision in the X-ray regime, which manifests itself through asymmetric behavior around the eclipses in the system's X-ray light curves. The large opening angle of the X-ray emitting region, as well as its location (i.e. the WN wind does not collide with the O star, but rather its wind) are evidence of radiative braking/inhibition occurring within the system. Additionally, the polarimetric results show evidence of the cavity the wind-wind collision region carves out of the Wolf-Rayet star's wind. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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