TY - JOUR
T1 - The UNCOVER Survey
T2 - First Release of Ultradeep JWST/NIRSpec PRISM Spectra for ∼700 Galaxies from z ∼ 0.3-13 in A2744
AU - Price, Sedona H.
AU - Bezanson, Rachel
AU - Labbe, Ivo
AU - Furtak, Lukas J.
AU - de Graaff, Anna
AU - Greene, Jenny E.
AU - Kokorev, Vasily
AU - Setton, David J.
AU - Suess, Katherine A.
AU - Brammer, Gabriel
AU - Cutler, Sam E.
AU - Leja, Joel
AU - Pan, Richard
AU - Wang, Bingjie
AU - Weaver, John R.
AU - Whitaker, Katherine E.
AU - Atek, Hakim
AU - Burgasser, Adam J.
AU - Chemerynska, Iryna
AU - Dayal, Pratika
AU - Feldmann, Robert
AU - Förster Schreiber, Natascha M.
AU - Fudamoto, Yoshinobu
AU - Fujimoto, Seiji
AU - Glazebrook, Karl
AU - Goulding, Andy D.
AU - Khullar, Gourav
AU - Kriek, Mariska
AU - Marchesini, Danilo
AU - Maseda, Michael V.
AU - Miller, Tim B.
AU - Muzzin, Adam
AU - Nanayakkara, Themiya
AU - Nelson, Erica
AU - Oesch, Pascal A.
AU - Shipley, Heath
AU - Smit, Renske
AU - Taylor, Edward N.
AU - Dokkum, Pieter van
AU - Williams, Christina C.
AU - Zitrin, Adi
N1 - Publisher Copyright:
© 2025. The Author(s). Published by the American Astronomical Society.
PY - 2025/3/20
Y1 - 2025/3/20
N2 - We present the design and observations of low-resolution JWST/NIRSpec PRISM spectroscopy from the Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) Cycle 1 JWST Treasury program. Targets are selected using JWST/NIRCam photometry from UNCOVER and other programs, and cover a wide range of categories and redshifts to ensure the legacy value of the survey. These categories include the first galaxies at z ≳ 10, faint galaxies during the Epoch of Reionization (z ∼ 6−8), high-redshift active galactic nuclei (z ≳ 6), Population III star candidates, distant quiescent and dusty galaxies (1 ≲ z ≲ 6), and filler galaxies sampling redshift-color-magnitude space from z ∼ 0.1−13. Seven NIRSpec microshutter array masks across the extended A2744 cluster were observed, along with NIRCam parallel imaging in nine filters (F090W, F115W, F150W, F200W, F277W, F356W, F410M, F444W, and F480M) over a total area of ∼26 arcmin2, overlapping existing Hubble Space Telescope coverage from programs including the Hubble Frontier Fields and BUFFALO. We successfully observed 553 objects down to mF444W ∼ 30 AB, and by leveraging mask overlaps, we reach total on-target exposure times ranging from 2.4 to 16.7 hr. We demonstrate the success rate and distribution of the confirmed redshifts, and also highlight the rich information revealed by these ultradeep spectra for a subset of our targets. An updated lens model of A2744 is also presented, including 14 additional spectroscopic redshifts and finding a total cluster mass of MSL = (2.1 ± 0.3) × 1015 M⊙. We publicly release reduced 1D and 2D spectra for all objects observed in summer 2023 along with a spectroscopic redshift catalog and the updated lens model of the cluster (https://jwst-uncover.github.io/DR4.html).
AB - We present the design and observations of low-resolution JWST/NIRSpec PRISM spectroscopy from the Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) Cycle 1 JWST Treasury program. Targets are selected using JWST/NIRCam photometry from UNCOVER and other programs, and cover a wide range of categories and redshifts to ensure the legacy value of the survey. These categories include the first galaxies at z ≳ 10, faint galaxies during the Epoch of Reionization (z ∼ 6−8), high-redshift active galactic nuclei (z ≳ 6), Population III star candidates, distant quiescent and dusty galaxies (1 ≲ z ≲ 6), and filler galaxies sampling redshift-color-magnitude space from z ∼ 0.1−13. Seven NIRSpec microshutter array masks across the extended A2744 cluster were observed, along with NIRCam parallel imaging in nine filters (F090W, F115W, F150W, F200W, F277W, F356W, F410M, F444W, and F480M) over a total area of ∼26 arcmin2, overlapping existing Hubble Space Telescope coverage from programs including the Hubble Frontier Fields and BUFFALO. We successfully observed 553 objects down to mF444W ∼ 30 AB, and by leveraging mask overlaps, we reach total on-target exposure times ranging from 2.4 to 16.7 hr. We demonstrate the success rate and distribution of the confirmed redshifts, and also highlight the rich information revealed by these ultradeep spectra for a subset of our targets. An updated lens model of A2744 is also presented, including 14 additional spectroscopic redshifts and finding a total cluster mass of MSL = (2.1 ± 0.3) × 1015 M⊙. We publicly release reduced 1D and 2D spectra for all objects observed in summer 2023 along with a spectroscopic redshift catalog and the updated lens model of the cluster (https://jwst-uncover.github.io/DR4.html).
UR - https://www.scopus.com/pages/publications/105000320046
UR - https://www.scopus.com/pages/publications/105000320046#tab=citedBy
U2 - 10.3847/1538-4357/adaec1
DO - 10.3847/1538-4357/adaec1
M3 - Article
AN - SCOPUS:105000320046
SN - 0004-637X
VL - 982
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 51
ER -