RT Journal Article
T1 The Hα-based star formation rate density of the universe at z=0.84
A1 Villar, Victor
A1 Gallego Maestro, Jesús
A1 Pérez González, Pablo Guillermo
A1 Pascual, Sergio
A1 Noeske, Kai
A1 Koo, David C.
A1 Barro, Guillermo
A1 Zamorano Calvo, Jaime
AB We present the results of an Hα 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 Hα emitters in the extended Groth strip and GOODS-N fields with L(Hα) > 10^41 ergs s^−1. We compute the Hα luminosity function at z = 0.84 after corrections for [N_π] flux contamination, extinction, systematic errors, and incompleteness. Our sources present an average dust extinction of A(H α) = 1.5 mag. Adopting Hα 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 Hα-based evolution of the SFR density proportional to (1 + z)^β with β = 3.8 ± 0.5. This evolution is consistent with that derived by other authors using different SFR tracers.
PB American Astronomical Society
SN 0004-637X
YR 2008
FD 2008-04-10
LK https://hdl.handle.net/20.500.14352/51630
UL https://hdl.handle.net/20.500.14352/51630
LA eng
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NO © 2008. The American Astronomical Society. We thank Nicolás Cardiel and Armando Gil de Paz for advice and useful comments. V. V. acknowledges the receipt of a Formación de Personal Investigador Fellowship from the Spanish Ministerio de Educación y Ciencia. This work was supported in part by the Spanish Plan Nacional de Astronomía y Astrofísica under grants AYA2003-01676 and AYA2006-02358. This work was supported in part by a generous grant of the New del Amo Foundation Program.
NO Ministerio de Educación y Ciencia (MEC), España
NO Program aNacional de Astronomía y Astrofísica
NO New del Amo Foundation Program
NO Ministerio de Economía y Competitividad (MINECO), España
DS Docta Complutense
RD 17 jul 2024