2024-03-29T09:28:11Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2166342021-08-02T11:48:16Zcom_10261_97com_10261_4com_10261_44com_10261_37col_10261_350col_10261_297col_10261_290
DIGITAL.CSIC
author
Nadolny, Jakub
author
Lara-López, Maritza A.
author
Cerviño, Miguel
author
Bongiovanni, Ángel
author
Cepa, Jordi
author
Diego, J. A. de
author
Pérez-García, Ana M.
author
Pérez Martínez, Ricardo
author
Sánchez-Portal, Miguel
author
Alfaro, Emilio J.
author
Castañeda, Héctor
author
Gallego, Jesús
author
González, José Jesús
author
González-Serrano, José Ignacio
author
Padilla Torres, Carmen P.
author
Pintos-Castro, Irene
author
Pović, Mirjana
funder
Ministerio de Economía y Competitividad (España)
funder
European Commission
funder
Universidad Nacional Autónoma de México
funder
Agencia Estatal de Investigación (España)
2020-07-15T07:51:41Z
2020-07-15T07:51:41Z
2020-04-24
0004-6361
http://hdl.handle.net/10261/216634
10.1051/0004-6361/201936205
http://dx.doi.org/10.13039/501100003329http://dx.doi.org/10.13039/501100011033http://dx.doi.org/10.13039/501100000780http://dx.doi.org/10.13039/501100005739
[Contex]: 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 & x2004;=& x2004;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 similar to 5 x 10(-19) erg s(-1) cm(2) and similar to 6 angstrom, respectively. We are able to constrain the faint-end slope (alpha & x2004;=& x2004;-1.03 +/- 0.08) of the observed LF ([O III]) at a mean redshift of z & x2004;=& x2004;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-& x22c6;& x2004;< & x2004;10(10) M-circle dot.
eng
openAccess
Galaxies: evolution
Galaxies: formation
Galaxies: fundamental parameters
Galaxies: star formation
Galaxies: structure
The OTELO survey. Nature and mass-metallicity relation for Hα emitters at z ∼ 0.4
artículo
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URL
https://digital.csic.es/bitstream/10261/216634/1/IAA_%202020A%26A...636A..84N.pdf
File
MD5
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application/pdf
IAA_ 2020A&A...636A..84N.pdf