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Título:
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Rest-frame far-ultraviolet to far-infrared view of Lyman break galaxies at z=3: templates and dust attenuation
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Autores:
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Álvarez Márquez, J. ;
Burgarella, D. ;
Buat, V. ;
Ilbert, O. ;
Pérez González, Pablo Guillermo
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Tipo de documento:
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texto impreso
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Editorial:
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EDP Sciencies, 2019-10-09
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Astrofísica
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Materia = Ciencias: Física: Astronomía
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Tipo = Artículo
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Resumen:
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Aims. This work explores, from a statistical point of view, the rest-frame far-ultraviolet (FUV) to far-infrared (FIR) emission of a population of Lyman-break galaxies (LBGs) at z ? 3 that cannot be individually detected from current FIR observations.
Methods. We performed a stacking analysis over a sample of ?17 000 LBGs at redshift 2.5
Results. We used the so-called IR-excess (IRX ? L_(IR)/L_(FUV)) to investigate the dust attenuation as a function of ?_(UV) and M?. Our LBGs, averaged as a function of ?_(UV), follow the well-known IRX–?_(UV) calibration of local starburst galaxies. Stacks as a function of M? follow the IRX–M? relationship presented in the literature at high M? (log(M? [M?]) > 10). However, a large dispersion is shown in the IRX–?_(UV) and IRX–M? planes, in which the ?_(UV) and M? are combined to average the sample. Additionally, the SEDfitting analysis results provide a diversity of dust attenuation curve along the LBG sample, and their slopes are well correlated with M?. Steeper dust attenuation curves than Calzetti’s are favored in low stellar mass LBGs (log(M? [M?]) 10.25). We also demonstrate that the slope of the dust attenuation curves is one of the main drivers that shapes the IRX–?_(UV) plane.
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En línea:
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https://eprints.ucm.es/id/eprint/63918/1/perezgonzalez189libre.pdf
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