RT info:eu-repo/semantics/article
T1 The Lockman-SpReSO project. Description, target selection, observations, and catalogue preparation
A1 Cepa Nogue, Jorge
A1 González-Otero, Mauro
A1 Padilla-Torres, Carmen P.
A1 Jesús González, José de
A1 Bongiovanni, Ángel
A1 Pérez García, Ana María
A1 González-Serrano, José Ignacio
A1 Alfaro, Emilio
A1 Avila-Reese, Vladimir
A1 Benítez, Erika
A1 Binette, Luc
A1 Cerviño, Miguel
A1 Cruz-González, Irene
A1 Diego, José A. de
A1 Gallego, Jesús
A1 Hernández-Toledo, Héctor
A1 Krongold, Yair
A1 Lara-López, Maritza A.
A1 Nadolny, Jakub
A1 Pérez-Martínez, Ricardo
A1 Povic´, Mirjana
A1 Sánchez-Portal, Miguel
A1 Cedrés, Bernabé
A1 Dultzin, Deborah
A1 Jiménez-Bailón, Elena
A1 Navarro Martínez, Rocío
A1 Negrete, Castalia Alenka
A1 Pintos-Castro, Irene
A1 Valenzuela, Octavio
A2 Astrofísica
A2 Grupo de investigación: Evolución de galaxias
K1 surveys
K1 galaxies: statistics
K1 galaxies: fundamental parameters
K1 techniques: imaging spectroscopy
AB Context. Extragalactic surveys are a key tool for better understanding the evolution of galaxies. Both deep and wide-field surveys serveto provide a clearer emerging picture of the physical processes that take place in and around galaxies, and to identify which of theseprocesses are the most important in shaping the properties of galaxies.Aims. The Lockman Spectroscopic Redshift Survey using Osiris (Lockman-SpReSO) aims to provide one of the most complete opticalspectroscopic follow-ups of the far-infrared (FIR) sources detected by the Herschel Space Observatory in the Lockman Hole (LH) field.The optical spectroscopic study of the FIR-selected galaxies supplies valuable information about the relation between fundamental FIRand optical parameters, including extinction, star formation rate, and gas metallicity. In this article, we introduce and provide an indepth description of the Lockman-SpReSO project and of its early results.Methods. We selected FIR sources from Herschel observations of the central 24 arcmin ×24 arcmin of the LH field with an opticalcounterpart up to 24.5 RC(AB). The sample comprises 956 Herschel FIR sources, plus 188 additional interesting objects in the field.These are point X-ray sources, cataclysmic variable star candidates, high-velocity halo star candidates, radio sources, very red quasistellar objects, and optical counterparts of sub-millimetre galaxies. The faint component of the catalogue (RC(AB) ≥ 20) was observedusing the OSIRIS instrument on the 10.4 m Gran Telescopio Canarias in multi-object spectroscopy (MOS) mode. The bright componentwas observed using two multi-fibre spectrographs: the AF2-WYFFOS at the William Herschel Telescope and the HYDRA instrumentat the WYIN telescope.Results. From an input catalogue of 1144 sources, we measured a secure spectroscopic redshift in the range 0.03 ≲ z ≲ 4.96 for357 sources with at least two identified spectral lines. In addition, for 99 sources that show only one emission or absorption line, aspectroscopic redshift was postulated based on the line and object properties, and photometric redshift. In both cases, properties ofemission and absorption lines were measured. Furthermore, to characterize the sample in more depth with determined spectroscopicredshifts, spectral energy distribution (SED) fits were performed using the CIGALE software. The IR luminosity and the stellar massestimations for the sample are also presented as a preliminary description.
YR 2023
FD 2023
LK http://riull.ull.es/xmlui/handle/915/35395
UL http://riull.ull.es/xmlui/handle/915/35395
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 07-ago-2024