Details

Autor(en) / Beteiligte

• Oesch, P A
• Brammer, G
• Naidu, R P
• Bouwens, R J
• Chisholm, J
• Illingworth, G D
• Matthee, J
• Nelson, E
• Qin, Y
• Reddy, N
• Shapley, A
• Shivaei, I
• van Dokkum, P
• Weibel, A
• Whitaker, K
• Wuyts, S
• Covelo-Paz, A
• Endsley, R
• Fudamoto, Y
• Giovinazzo, E
• Herard-Demanche, T
• Kerutt, J
• Kramarenko, I
• Labbe, I
• Leonova, E
• Lin, J
• Magee, D
• Marchesini, D
• Maseda, M
• Mason, C
• Matharu, J
• Meyer, R A
• Neufeld, C
• Prieto Lyon, G
• Schaerer, D
• Sharma, R
• Shuntov, M
• Smit, R
• Stefanon, M
• Wyithe, J S B
• Xiao, M

Titel

The JWST FRESCO survey: legacy NIRCam/grism spectroscopy and imaging in the two GOODS fields

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2023-08, Vol.525 (2), p.2864-2874

Ort / Verlag

Oxford University Press

Erscheinungsjahr

2023

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• ABSTRACT We present the JWST cycle 1 53.8 h medium program FRESCO, short for ‘First Reionization Epoch Spectroscopically Complete Observations’. FRESCO covers 62 arcmin2 in each of the two GOODS/CANDELS fields for a total area of 124 arcmin2 exploiting JWST’s powerful new grism spectroscopic capabilities at near-infrared wavelengths. By obtaining ∼2 h deep NIRCam/grism observations with the F444W filter, FRESCO yields unprecedented spectra at R ∼ 1600 covering 3.8–5.0 µm for most galaxies in the NIRCam field of view. This setup enables emission line measurements over most of cosmic history, from strong PAH lines at z ∼ 0.2–0.5, to Pa α and Pa β at z ∼ 1–3, He i and [S iii] at z ∼ 2.5–4.5, H α and [N ii] at z ∼ 5–6.5, up to [O iii] and H β for z ∼ 7–9 galaxies. FRESCO’s grism observations provide total line fluxes for accurately estimating galaxy stellar masses and calibrating slit-loss corrections of NIRSpec/MSA spectra in the same field. Additionally, FRESCO results in a mosaic of F182M, F210M, and F444W imaging in the same fields to a depth of ∼28.2 mag (5σ in 0${_{.}^{\prime\prime}}$32 diameter apertures). Here, we describe the overall survey design and the key science goals that can be addressed with FRESCO. We also highlight several, early science results, including: spectroscopic redshifts of Lyman break galaxies that were identified almost 20 yr ago, the discovery of broad-line active galactic nuclei at z > 4, and resolved Pa α maps of galaxies at z ∼ 1.4. These results demonstrate the enormous power for serendipitous discovery of NIRCam/grism observations.