Assessing the photometric redshift precision of the S-PLUS survey: The Stripe-82 as a test-case

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dc.contributor.authorMolino A.
dc.contributor.authorCosta-Duarte M.V.
dc.contributor.authorSampedro L.
dc.contributor.authorHerpich F.R.
dc.contributor.authorSodré L.
dc.contributor.authorJr. Mendes de Oliveira C.
dc.contributor.authorSchoenell W.
dc.contributor.authorBarbosa C.E.
dc.contributor.authorQueiroz C.
dc.contributor.authorLima E.V.R.
dc.contributor.authorAzanha L.
dc.contributor.authorMuñoz-Elgueta N.
dc.contributor.authorRibeiro T.
dc.contributor.authorKanaan A.
dc.contributor.authorHernandez-Jimenez J.A.
dc.contributor.authorCortesi A.
dc.contributor.authorAkras S.
dc.contributor.authorLopes de Oliveira R.
dc.contributor.authorTorres-Flores S.
dc.contributor.authorLima-Dias C.
dc.contributor.authorNilo Castellon J.L.
dc.contributor.authorDamke G.
dc.contributor.authorAlvarez-Candal A.
dc.contributor.authorJiménez-Teja Y.
dc.contributor.authorCoelho P.
dc.contributor.authorPereira E.
dc.contributor.authorMontero-Dorta A.D.
dc.contributor.authorBenítez N.
dc.contributor.authorGonçalves T.S.
dc.contributor.authorSantana-Silva L.
dc.contributor.authorWerner S.V.
dc.contributor.authorAlmeida L.A.
dc.contributor.authorLopes P.A.A.
dc.contributor.authorChies-Santos A.L.
dc.contributor.authorTelles E.
dc.contributor.authorThom de Souza R.C.
dc.contributor.authorGonçalves D.R.
dc.contributor.authorde Souza R.S.
dc.contributor.authorMakler M.
dc.contributor.authorBuzzo M.L.
dc.contributor.authorPlacco V.M.
dc.contributor.authorNakazono L.M.I.
dc.contributor.authorSaito R.K.
dc.contributor.authorOverzier R.A.
dc.contributor.authorAbramo L.R.
dc.date.accessioned2021-08-17T22:40:38Z
dc.date.available2021-08-17T22:40:38Z
dc.date.issued2020-12
dc.descriptionIndexación Scopuses
dc.description.abstractIn this paper we present a thorough discussion about the photometric redshift (photo-z) performance of the Southern Photometric Local Universe Survey (S-PLUS). This survey combines a seven narrow +5 broad passband filter system, with a typical photometric-depth of r ∼ 21 AB. For this exercise, we utilize the Data Release 1 (DR1), corresponding to 336 deg2 from the Stripe-82 region. We rely on the BPZ2 code to compute our estimates, using a new library of SED models, which includes additional templates for quiescent galaxies. When compared to a spectroscopic redshift control sample of ∼100 k galaxies, we find a precision of σz <0.8 per cent, <2.0 per cent, or <3.0 per cent for galaxies with magnitudes r < 17, <19, and <21, respectively. A precision of 0.6 per cent is attained for galaxies with the highest Odds values. These estimates have a negligible bias and a fraction of catastrophic outliers inferior to 1 per cent. We identify a redshift window (i.e. 0.26 < z < 0.32) where our estimates double their precision, due to the simultaneous detection of two emission lines in two distinct narrow bands; representing a window opportunity to conduct statistical studies such as luminosity functions. We forecast a total of ∼2 M, ∼16 M and ∼32 M galaxies in the S-PLUS survey with a photo-z precision of σz <1.0 per cent, <2.0 per cent, and <2.5 per cent after observing 8000 deg2. We also derive redshift probability density functions, proving their reliability encoding redshift uncertainties and their potential recovering the n(z) of galaxies at z < 0.4, with an unprecedented precision for a photometric survey in the Southern hemisphere. © 2020 The Author(s)es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/499/3/3884/5856013
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, Volume 499, Issue 3, Pages 3884 - 39081 December 2020es
dc.identifier.doi10.1093/mnras/staa1586
dc.identifier.issn00358711
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/19895
dc.language.isoenes
dc.publisherOxford University Presses
dc.subjectStellar Spectraes
dc.subjectLAMOSTes
dc.subjectRed Shiftes
dc.subjectCosmologyes
dc.subjectLarge-scale structure of Universees
dc.subjectGalaxieses
dc.titleAssessing the photometric redshift precision of the S-PLUS survey: The Stripe-82 as a test-casees
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