A multi-wavelength view of NGC 1624-2
| Autor: | Alexander W. Fullerton, Véronique Petit, R. MacInnis, C. Erba, D. H. Cohen, N. R. Walborn, Alexandre David-Uraz, S. P. Owocki |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Proceedings of the International Astronomical Union. 12:394-394 |
| ISSN: | 1743-9221 1743-9213 |
| Popis: | Large magnetometric surveys have contributed to the detection of an increasing number of magnetic massive stars, and to the recognition of a population of magnetic massive stellar objects with distinct properties. Among these, NGC 1624-2 possesses the largest magnetic field of any O-type star; such a field confines the stellar wind into a circumstellar magnetosphere, which can be probed using observations at different wavelength regimes. Recent optical and X-ray observations suggest that NGC 1624-2’s magnetosphere is much larger than that of any other magnetic O star. By modeling the variations of UV resonance lines, we can constrain its velocity structure. Furthermore, recent spectropolarimetric observations raise the possibility of a more complex field topology than previously expected. Putting all of these multi-wavelength constraints together will allow us to paint a consistent picture of NGC 1624-2 and its surprising behavior, giving us valuable insight into the very nature of massive star magnetospheres. |
| Databáze: | OpenAIRE |
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