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 Detalle_Publicacion

The OTELO survey: a case study of [O III] L 4959,5007 emitters at L z »= 0.83

Abstract: Context. The OSIRIS Tunable Filter Emission Line Object (OTELO) survey is a very deep, blind exploration of a selected region of the Extended Groth Strip and is designed for finding emission-line sources (ELSs). The survey design, observations, data reduction, astrometry, and photometry, as well as the correlation with ancillary data used to obtain a final catalogue, including photo-z estimates and a preliminary selection of ELS, were described in a previous contribution. Aims. Here, we aim to determine the main properties and luminosity function (LF) of the [O III] ELS sample of OTELO as a scientific demonstration of its capabilities, advantages, and complementarity with respect to other surveys. Methods. The selection and analysis procedures of ELS candidates obtained using tunable filter pseudo-spectra are described. We performed simulations in the parameter space of the survey to obtain emission-line detection probabilities. Relevant characteristics of [O III] emitters and the LF ([O III]), including the main selection biases and uncertainties, are presented. Results. From 541 preliminary emission-line source candidates selected around z = 0.8, a total of 184 sources were confirmed as [O III] emitters. Consistent with simulations, the minimum detectable line flux and equivalent width in this ELS sample are ?5 × 10-19 erg s-1 cm2 and ?6 Å, respectively. We are able to constrain the faint-end slope (? =-1.03? ±? 0.08) of the observed LF ([O III]) at a mean redshift of z = 0.83. This LF reaches values that are approximately ten times lower than those from other surveys. The vast majority (84%) of the morphologically classified [O III] ELSs are disc-like sources, and 87% of this sample is comprised of galaxies with stellar masses of M? < 1010 M· .

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Astronomy & Astrophysics, 2020, 635, A35

Editorial: EDP Sciences

 Fecha de publicación: 01/03/2020

Nº de páginas: 14

Tipo de publicación: Artículo de Revista

 DOI: 10.1051/0004-6361/201833656

ISSN: 0004-6361,1432-0746

 Proyecto español: AYA2013 - 46724 - P

Url de la publicación: https://doi.org/10.1051/0004-6361/201833656

Autoría

BONGIOVANNI, ÁNGEL

RAMÓN-PÉREZ, MARINA

GARCÍA, ANA MARÍA PÉREZ

CERVIÑO, MIGUEL

CEPA, JORDI

NADOLNY, JAKUB

MARTÍNEZ, RICARDO PÉREZ

ALFARO, EMILIO J.

CASTAÑEDA, HÉCTOR O.

CEDRÉS, BERNABE&ACUTE

DE DIEGO, JOSÉ A.

EDEROCLITE, ALESSANDRO

FERNÁNDEZ-LORENZO, MIRIAN

GALLEGO, JESÚS

DE JESÚS GONZÁLEZ, JOSE&ACUTE

LARA-LÓPEZ, MARITZA A.

OTEO GÓMEZ, IVÁN

PADILLA TORRES, CARMEN P.