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Título:
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Optically faint massive Balmer break galaxies at z > 3 in the CANDELS/GOODS fields
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Autores:
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Alcalde Pampliega, Belén ;
Pérez González, Pablo Guillermo ;
Barro, Guillermo ;
Domínguez Sánchez, Helena ;
Eliche Moral, M. Carmen ;
Cardiel López, Nicolás ;
Hernán Caballero, Antonio ;
Rodríguez Muñoz, Lucía ;
Sánchez Blázquez, Patricia ;
Esquej, Pilar
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Tipo de documento:
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texto impreso
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Editorial:
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IOP publishing ltd, 2019-05-10
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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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Tipo = Artículo
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Resumen:
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We present a sample of 33 Balmer break galaxies (BBGs) selected as Hubble Space Telescope/F160W dropouts in the deepest CANDELS/GOODS fields (H >/~ 27.3 mag) but relatively bright in Spitzer/IRAC ([3.6], [4.5] 10^(3) M_(?) yr^(?1)) that place them above the MS. The rest, 30%, are post-starbursts or quiescent galaxies located >2? below the MS with mass-weighted ages older than 700 Myr. Only two of the 33 galaxies are X-ray-detected active galactic nuclei (AGNs) with optical/near-infrared SEDs dominated by stellar emission, but the presence of obscured AGNs in the rest of the sources cannot be discarded. Our sample accounts for 8% of the total number density of log(M / M_(?)) > 10 galaxies at z > 3, but it is a significant contributor (30%) to the general population of red log(M / M_(?) > 11 galaxies at 4 11 galaxies in the local universe was assembled in the first 1.5 Gyr after the big bang, a fraction that is not reproduced by state-of-the-art galaxy formation simulations.
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En línea:
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https://eprints.ucm.es/55718/1/cardiel109libre.pdf
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