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Título:
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The H?-based star formation rate density of the universe at z=0.84
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Autores:
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Villar, Víctor ;
Gallego Maestro, Jesús ;
Pérez González, Pablo Guillermo ;
Pascual, Sergio ;
Noeske, Kai ;
Koo, David C. ;
Barro, Guillermo ;
Zamorano Calvo, Jaime
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Tipo de documento:
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texto impreso
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Editorial:
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American Astronomical Society, 2008-04-10
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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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Materia = Ciencias: Física: Astronomía
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Tipo = Artículo
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Resumen:
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We present the results of an H? near-infrared narrowband survey searching for star-forming galaxies at redshift z = 0.84. This work is an extension of our previous narrowband studies in the optical at lower redshifts. After removal of stars and redshift interlopers (using spectroscopic and photometric redshifts), we build a complete sample of 165 H? emitters in the extended Groth strip and GOODS-N fields with L(H?) > 10^41 ergs s^?1. We compute the H? luminosity function at z = 0.84 after corrections for [N_?] flux contamination, extinction, systematic errors, and incompleteness. Our sources present an average dust extinction of A(H ?) = 1.5 mag. Adopting H? as a surrogate for the instantaneous SFR, we measure an extinction-corrected SFR density of 0.17^+0.03_?0.03 M_? yr^?1 Mpc^?3. Combining this result to our prior measurements at z = 0.02, 0.24, and 0.40, we derive an H?-based evolution of the SFR density proportional to (1 + z)^? with ? = 3.8 ± 0.5. This evolution is consistent with that derived by other authors using different SFR tracers.
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En línea:
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https://eprints.ucm.es/34218/1/jesusgallego53libre.pdf
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