RT Journal Article
T1 Shards: a global view of the star formation activity at z ~ 0.84 and z ~ 1.23
A1 Pérez González, Pablo Guillermo
A1 Eliche Moral, María del Carmen
A1 Alcalde Pampliega, Belén
A1 Cardiel López, Nicolás
A1 Domínguez Sánchez, Helena
A1 Espino Briones, Néstor
A1 Esquej Alonso, María del Pilar
A1 Gallego Maestro, Jesús
A1 Rodríguez Muñoz, Lucía
AB In this paper, we present a comprehensive analysis of star-forming galaxies (SFGs) at intermediate redshifts (z ~ 1). We combine the ultra-deep optical spectro-photometric data from the Survey for High-z Absorption Red and Dead Sources (SHARDS) with deep UV-to-FIR observations in the GOODS-N field. Exploiting two of the 25 SHARDS medium-band filters, F687W17 and F823W17, we select [O II] emission line galaxies at z ~ 0.84 and z ~ 1.23 and characterize their physical properties. Their rest-frame equivalent widths (EWrf([O ii])), line fluxes, luminosities, star formation rates (SFRs), and dust attenuation properties are investigated. The evolution of EW_rf([O II]) closely follows the SFR density evolution of the universe, with a trend of EW_rf([O II]) ∞ (1 + z)^3 up to redshift z ≃1, followed by a possible flattening. The SF properties of the galaxies selected on the basis of their [O II] emission are compared with complementary samples of SFGs selected by their MIR and FIR emission, and also with a general mass-selected sample of galaxies at the same redshifts. We demonstrate observationally that the UVJ diagram (or, similarly, a cut in the specific SFR) is only partially able to distinguish the quiescent galaxies from the SFGs. The SFR–M_* relation is investigated for the different samples, yielding a logarithmic slope ~1, in good agreement with previous results. The dust attenuations derived from different SFR indicators (UV(1600), UV(2800), [O II], IR) are compared and show clear trends with respect to both the stellar mass and total SFR, with more massive and highly star-forming galaxies being affected by stronger dust attenuation.
PB American Astronomical Society
SN 0004-637X
YR 2015
FD 2015-10-20
LK https://hdl.handle.net/20.500.14352/24295
UL https://hdl.handle.net/20.500.14352/24295
LA eng
NO © 2015. The American Astronomical Society. Artículo firmado por 25 autores. The authors would like to thank the referee for her/his valuable comments and helpful suggestions concerning the presentation of this paper, which helped to improve the manuscript. The work of A.C. is supported by the STARFORM Sinergia Project funded by the Swiss National Science Foundation, and also benefited from a MERAC Funding and Travel Award. A.C. acknowledges the kind hospitality of the Departamento de Astrofísica y ciencias de la Atmósfera, Universidad Complutense de Madrid, and of the Department d'Astronomia i Astrofisica, Universitat de Valencia. A.C. and E.R. are grateful to M. Cava for many useful discussions and suggestions. E.R. acknowledges the kind hospitality of the Observatoire de Geneve, Universite de Geneve. P.G.P.-G. acknowledges support from the Spanish Programa Nacional de Astronomía y Astrofísica under grants AYA2012-31277. A.V.G. acknowledges support from the ERC via an Advanced Grant under grant agreement no. 321323-NEOGAL. N.C. acknowledges support from the Spanish Ministry of Economy and Competitiveness under grant AYA2013-46724-P. A.A.H. and A.H.C. acknowledge financial support from the Spanish Ministry of Economy and Competitiveness through grant AYA2012-31447, which is partly funded by the FEDER program. A.J.C. is a Ramón y Cajal Fellow of the Spanish Ministry of Science and Innovation and acknowledges financial support from the Spanish Ministry of Economy and Competitiveness through grant AYA2012-30789, partly funded by the FEDER program. This work has made use of the Rainbow Cosmological Surveys Database, which is operated by the Universidad Complutense de Madrid (UCM). Based on observations made with the Gran Telescopio Canarias (GTC), installed at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, on the island of La Palma.
NO Unión Europea. FP7
NO Ministerio de Economía y Competitividad (MINECO), España
NO STARFORM Sinergia Project - Swiss National Science Foundation
NO MERAC
NO Programa Nacional de Astronomía y Astrofísica, España
NO ERC
NO Programa Fondos FEDER (UE)
NO Ministerio de Ciencia en Innovación (MICINN), España
NO Programa Ramón y Cajal
DS Docta Complutense
RD 17 abr 2025