EXTENDED NON-THERMAL EMISSION POSSIBLY ASSOCIATED WITH CYG OB2 #5
Cyg OB2 #5 is a contact binary system (O6.5-7+O5.5-6) with associated radio continuum emission. Two compact ('0.''3) radio continuum components have been reported previously: the primary is associated with the contact binary and the secondary is an arc-like source -0."8 to the NE...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57124416007 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57124416007 |
| Access Level: | acceso abierto |
| Palabra clave: | Física, Astronomía y Matemáticas Radio continuum: stars stars: individual (Cyg OB2 #5) |
| Sumario: | Cyg OB2 #5 is a contact binary system (O6.5-7+O5.5-6) with associated radio continuum emission. Two compact ('0.''3) radio continuum components have been reported previously: the primary is associated with the contact binary and the secondary is an arc-like source -0."8 to the NE of the primary. This arc-like source results from the interaction of the winds of the contact binary and a B-type star in the region. In this paper we report the detection of an extended (-30"), nonthermal component to the NE of the compact components. We propose that this extended emission could be an unresolved background source (i.e. a radio galaxy), extended galactic emission, or non-thermal emission related to the relativistic electrons that are produced in the shock between the contact binary and the B-type star and that are carried away to large distances by the wind from the contact binary. |
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