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The WIRCam Ultra De...
The WIRCam Ultra Deep Survey (WUDS) I. Survey overview and UV luminosity functions at z similar to 5 and z similar to 6
- Article/chapterEnglish2018
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2018-11-29
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EDP Sciences,2018
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LIBRIS-ID:oai:DiVA.org:su-163608
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-163608URI
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https://doi.org/10.1051/0004-6361/201732080DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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The aim of this paper is to introduce the WIRCam Ultra Deep Survey (WUDS), a near-IR photometric survey carried out at the CFH Telescope in the field of the CFHTLS-D3 field (Groth Strip). WUDS includes four near-IR bands (Y, J, H and K-s) over a field of view of similar to 400 arcmin(2). The typical depth of WUDS data reaches between similar to 26.8 in Y and J, and similar to 26 in H and K-s (AB, 3 sigma- in 1.3 '' aperture), whereas the corresponding depth of the CFHTLS-D3 images in this region ranges between 28.6 and 29 in ugr, 28.2 in i and 27.1 in z (same S/N and aperture). The area and depth of this survey were specifically tailored to set strong constraints on the cosmic star formation rate and the luminosity function brighter or around L* in the z similar to 6-10 redshift domain, although these data are also useful for a variety of extragalactic projects. This first paper is intended to present the properties of the public WUDS survey in details: catalog building, completeness and depth, number counts, photometric redshifts, and global properties of the galaxy population. We have also concentrated on the selection and characterization of galaxy samples at z similar to [4.5-7] in this field. For these purposes, we include an adjacent shallower area of similar to 1260 arcmin(2) in this region, extracted from the WIRCam Deep Survey (WIRDS), and observed in J, H and K-s bands. UV luminosity functions were derived at z - 5 and z - 6 taking advantage from the fact that WUDS covers a particularly interesting regime at intermediate luminosities, which allows a combined determination of M* and Phi* with increased accuracy. Our results on the luminosity function are consistent with a small evolution of both M* and Phi* between z = 5 and z = 6, irrespective of the method used to derive them, either photometric redshifts applied to blindly-selected dropout samples or the classical Lyman Break Galaxy color-preselected samples. Our results lend support to higher Phi* determinations at z = 6 than usually reported. The selection and combined analysis of different galaxy samples at z >= 7 will be presented in a forthcoming paper, as well as the evolution of the UV luminosity function between z similar to 4.5 and 9. WUDS is intended to provide a robust database in the near-IR for the selection of targets for detailed spectroscopic studies, in particular for the EMIR/GTC GOYA Survey.
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Hudelot, P.
(author)
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Laporte, N.
(author)
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Mellier, Y.
(author)
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McCracken, H. J.
(author)
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Balcells, M.
(author)
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Boone, F.
(author)
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Cardiel, N.
(author)
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Gallego, J.
(author)
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Garzón, F.
(author)
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Guzmán, R.
(author)
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Le Borgne, J. F.
(author)
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Prieto, M.
(author)
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Richard, J.
(author)
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Schaerer, D.
(author)
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Tresse, L.
(author)
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Arnouts, S.
(author)
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Cuby, J. G.
(author)
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Disseau, K.
(author)
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Hayes, MatthewStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)mhaye
(author)
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Stockholms universitetInstitutionen för astronomi
(creator_code:org_t)
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In:Astronomy and Astrophysics: EDP Sciences6200004-63611432-0746
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Pelló, R.
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Hudelot, P.
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Laporte, N.
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Mellier, Y.
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McCracken, H. J.
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Balcells, M.
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Boone, F.
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Cardiel, N.
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Gallego, J.
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Garzón, F.
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Guzmán, R.
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Le Borgne, J. F.
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Prieto, M.
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Richard, J.
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Schaerer, D.
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Tresse, L.
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Arnouts, S.
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Cuby, J. G.
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Disseau, K.
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Hayes, Matthew
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Stockholm University