HDUV: The Hubble Deep UV Legacy Survey

Abstract

We present the Hubble Deep UV Legacy Survey (HDUV), a 132-orbit imaging program with the WFC3/UVIS camera on board the Hubble Space Telescope (HST). The HDUV extends and builds on the few previous UV imaging surveys in the two GOODS/CANDELS-Deep fields to provide deep images over a total area of ∼100 arcmin 2 in the two filters F275W and F336W. Our release also includes all the F275W imaging data taken by the CANDELS survey, which were aligned using a novel approach and combined with the HDUV survey data. By reaching depths of 27.5-28.0 mag (5σ in 0 4 apertures), these are the deepest high-resolution UV data over such a large area taken to date. Such unique UV imaging enables a wide range of science by the community. A few of the main goals of the HDUV survey are as follows: (1) to provide a complete sample of faint star-forming galaxies at z∼1-3; (2) to constrain the ionizing photon escape fraction from galaxies at z∼2-3; and (3) to track the build-up of bulges and the disappearance of clumpy disk galaxies through reliable internal stellar population properties at sub-kiloparsec resolution out to z∼3. The addition of the HDUV data further enhances the legacy value of the two GOODS/CANDELS-Deep fields, which now include deep 11-band HST imaging, as well as very deep ancillary data from X-ray to radio, enabling unique multi-wavelength studies. Here, we provide an overview of the survey design, describe the data reduction, and highlight a few basic analyses of the images that are available to the community as high-level science products, via the Mikulski Archive for Space Telescopes.

The Hubble Legacy Field GOODS-S Photometric Catalog

“…In this manuscript, we describe the data analysis methodology employed to generate high quality photometric catalogs based on the v2.0 mosaics released through the Hubble Legacy Fields (HLF) project in the GOODS-S field. The details of the data reduction can be found in Illingworth et al (2016) and Oesch et al (2018).…”

“…In Figure 17, we then compare the total magnitudes. We additionally compare the HLF GOODS-S photometric catalog to the more recent HDUV photometric catalogs for F225W, F275W, and F336W (Oesch et al 2018), where the construction of this catalog followed the same methodology as 3D-HST and adopts the same segmentation map. The notable difference between the 3D-HST/HDUV and HLF catalogs is that 3D-HST performs a zero point correction, whereas we do not add this step for the HST-only HLF photometric catalog.…”

Lyman continuum escape fraction in Ly α emitters at z ≃ 3.1

“…In this study, we use the deep HST/WFC3 F336W images to measure the LyC escape fraction in a sample of LAEs at z ≃ 3.1 in the GOODS-South field. We use the HST/WFC3 F336W imaging data from the HDUV survey (Oesch et al 2018). The HDUV survey is a deep UV imaging legacy survey covering a total of area of about 100 armin 2 in the two GOODS fields in F275W and F336W bands.…”

“…The redshift of these LAEs have been accurately measured by the MUSE Hubble Ultra-Deep Field (HUDF) survey and the MUSE-Wide survey based on their Lyα emission lines (Japelj et al 2017;Urrutia et al 2018). Their LyC emission is well covered by the deep HST/WFC3 F336W images from the Hubble Deep UV Legacy Survey (HDUV, Oesch et al 2018).…”

UV and NIR size of the low-mass field galaxies: the UV compact galaxies

“…We fixed the galaxy centre from the HST WFC3 F160W image, then we measured the F160W, F275W image half-light radius from the dual image mode of SExtractor (v2.19), with the F160W image as the detection image, and the F275W image as the measurement image. The PSF FWHM of the F275W and F160W images are 0.1 and 0.17 arcsec (Oesch et al 2018). We convolve the F275W image with a kernel with FWHM = FWHM 2 F160W − FWHM 2 F275W , so that the F275W image would have a comparable spatial resolution.…”