Infrared identification of 2XMM J191043.4+091629.4
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Título: | Infrared identification of 2XMM J191043.4+091629.4 |
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Autor/es: | Rodes Roca, José Joaquín | Torrejon, Jose M. | Martínez Núñez, Silvia | Bernabeu, Guillermo | Magazzù, Antonio |
Grupo/s de investigación o GITE: | Astronomía y Astrofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal |
Palabras clave: | X-rays: binaries | X-rays: stars | Infrared: stars | Virtual observatory tools |
Área/s de conocimiento: | Física Aplicada |
Fecha de publicación: | jul-2013 |
Editor: | EDP Sciences |
Cita bibliográfica: | Astronomy & Astrophysics. 2013, 555: A115. doi:10.1051/0004-6361/201321923 |
Resumen: | Context. We report the infrared identification of the X-ray source 2XMM J191043.4+091629.4, which was detected by XMM-Newton/EPIC in the vicinity of the Galactic supernova remnant W49B. Aims. The aim of this work is to establish the nature of the X-ray source 2XMM J191043.4+091629.4 studying both the infrared photometry and spectroscopy of the companion. Methods. We analysed UKIDSS images around the best position of the X-ray source and obtained spectra of the best candidate using NICS in the Telescopio Nazionale Galileo (TNG) 3.5-m telescope. We present photometric and spectroscopic TNG analyses of the infrared counterpart of the X-ray source, identifying emission lines in the K-band. The H-band spectra does not present any significant feature. Results. We have shown that the Brackett γ H i at 2.165 μm, and He i at 2.184 μm and at 2.058 μm are significantly present in the infrared spectrum. The CO bands are also absent from our spectrum. Based on these results and the X-ray characteristics of the source, we conclude that the infrared counterpart is an early B-type supergiant star with an E(B − V) = 7.6 ± 0.3 at a distance of 16.0 ± 0.5 kpc. This would be, therefore, the first high-mass X-ray binary in the Outer Arm at galactic longitudes of between 30° and 60°. |
Patrocinador/es: | This work was supported by the Spanish Ministry of Education and Science project number AYA2010-15431, De INTEGRAL a IXO: binarias de rayos X y estrellas activas. J.J.R.R. acknowledges the support by the Spanish Ministerio de Educación y Ciencia under grant PR2009-0455. |
URI: | http://hdl.handle.net/10045/33626 |
ISSN: | 0004-6361 (Print) | 1432-0746 (Online) |
DOI: | 10.1051/0004-6361/201321923 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © ESO, 2013 |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1051/0004-6361/201321923 |
Aparece en las colecciones: | INV - Astronomía y Astrofísica - Artículos de Revistas |
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