In:
Astronomy & Astrophysics, EDP Sciences, Vol. 600 ( 2017-4), p. A110-
Abstract:
This paper describes the first data release (DR1) of the VIMOS Ultra Deep Survey (VUDS). The VUDS-DR1 is the release of all low-resolution spectroscopic data obtained in 276.9 arcmin 2 of the CANDELS-COSMOS and CANDELS-ECDFS survey areas, including accurate spectroscopic redshifts z spec and individual spectra obtained with VIMOS on the ESO-VLT. A total of 698 objects have a measured redshift, with 677 galaxies, two type-I AGN, and a small number of 19 contaminating stars. The targets of the spectroscopic survey are selected primarily on the basis of their photometric redshifts to ensure a broad population coverage. About 500 galaxies have z spec 〉 2, 48of which have z spec 〉 4; the highest reliable redshifts reach beyond z spec = 6. This data set approximately doubles the number of galaxies with spectroscopic redshifts at z 〉 3 in these fields. We discuss the general properties of the VUDS–DR1 sample in terms of the spectroscopic redshift distribution, the distribution of Lyman- α equivalent widths, and physical properties including stellar masses M ⋆ and star formation rates derived from spectral energy distribution fitting with the knowledge of z spec . We highlight the properties of the most massive star-forming galaxies, noting the wide range in spectral properties, with Lyman- α in emission or in absorption, and in imaging properties with compact, multi-component, or pair morphologies. We present the catalogue database and data products. All VUDS-DR1 data are publicly available and can be retrieved from a dedicated query-based database. Future VUDS data releases will follow this VUDS-DR1 to give access to the spectra and associated measurement of ~8000 objects in the full ~1 square degree of the VUDS survey.
Type of Medium:
Online Resource
ISSN:
0004-6361
,
1432-0746
DOI:
10.1051/0004-6361/201527963
Language:
English
Publisher:
EDP Sciences
Publication Date:
2017
detail.hit.zdb_id:
1458466-9
SSG:
16,12
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