Artículo
Infrared and radio study of the W43 cluster: resolved binaries and non-thermal emission
Luque Escamilla, P. L.; Muñoz Arjonilla, Alvaro José; Sánchez Sutil, Juan R.; Martí, J.; Combi, Jorge Ariel
; Sánchez Ayaso, Estrella
Fecha de publicación:
08/2011
Editorial:
EDP Sciences
Revista:
Astronomy & Astrophysics. Supplement Series (print)
ISSN:
0365-0138
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Context. The recent detection of very high-energy (VHE) gamma-ray emission from the direction of the W43 star-forming region prompted us to investigate its stellar population in detail in an attempt to see wether or not it is possible an association.
Aims. We search for the possible counterpart(s) of the gamma-ray source or any hints of them, such as non-thermal synchrotron emission as a tracer of relativistic particles often involved in plausible physical scenarios for VHE emission.
Methods. We data-mined several archival databases with different degrees of success. The most significant results came from radio and near-infrared archival data.
Results. The previously known Wolf-Rayet star in the W43 central cluster and another cluster member appear to be resolved into two components,suggesting a likely binary nature. In addition, extended radio emission with a clearly negative spectral index is detected in coincidence with the W43 cluster. These findings could have important implications for possible gamma-ray emitting scenarios, which we also briefly discuss.
Palabras clave:
Wolf-Rayet Stars
,
X-Rays
,
Radio Continuum
,
Gamma Rays
,
Infrared Stars
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Identificadores
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Articulos(IAR)
Articulos de INST.ARG.DE RADIOASTRONOMIA (I)
Articulos de INST.ARG.DE RADIOASTRONOMIA (I)
Citación
Luque Escamilla, P. L.; Muñoz Arjonilla, Alvaro José; Sánchez Sutil, Juan R.; Martí, J.; Combi, Jorge Ariel; et al.; Infrared and radio study of the W43 cluster: resolved binaries and non-thermal emission; EDP Sciences; Astronomy & Astrophysics. Supplement Series (print); 532; 8-2011; 92-96
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