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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
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Pelló, R. (author)
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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, Matthew (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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(creator_code:org_t)
- 2018-11-29
- 2018
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 620
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https://doi.org/10.1...
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https://www.aanda.or...
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Abstract
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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.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- surveys
- galaxies: high-redshift
- dark ages
- reionization
- first stars
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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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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show more...
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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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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Stockholm University