Seeing-sorted Visible Multi-Object Spectrograph U-band Imaging of the GOODS-south Field*
Journal
Date Issued
2021
Author(s)
Otteson, Lillian
•
McCabe, Tyler
•
Ashcraft, Teresa A.
•
Windhorst, Rogier A.
•
Jansen, Rolf A.
•
Cohen, Seth H.
•
•
•
•
•
•
•
•
Boutsia, Konstantina
•
Koekemoer, Anton
•
O’Connell, Robert W.
•
Rutkowski, Michael J.
•
Ryan, Russell E.
•
Scarlata, Claudia
•
Teplitz, Harry
Abstract
We present the optimal resolution and optimal depth U-filter mosaics using the seeing-sorted method of Ashcraft et al. on deep, ground-based U-bandimaging of the Great Observatories Origins Deep Survey South field as part of the near-UV imaging program UVCANDELS. We use the U-bandimages obtained with the VIsible Multi-Object Spectrograph on the European Southern Observatory Very Large Telescope by Nonino et al. Our best resolution mosaic includes images with a seeing full-width half maximum (FWHM) ≤ 0"8, and encompasses 50% of the data. Our best depth mosaic includes images with FWHM ≤ 1"5, corresponding to 100% of the data. Prior to being combined, the source fluxes in each individual background-subtracted image are corrected to match a 3D-HST photometric catalog of the same field to correct variations in the U-band zero-points. These mosaics provide deep U-banddata complementary to the UVCANDELS HST WFC3 F275W and ACS F435W images. We assess the depth of both U-bandmosaics. * Based on data acquired using the Very Large Telescope (VLT) of the European Southern Observatory (ESO).
Volume
5
Issue
8
Start page
190
Issn Identifier
2515-5172
Ads BibCode
2021RNAAS...5..190O
Rights
open.access
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