CEERS

The Cosmic Evolution Early Release Science Survey (CEERS)

Primary Investigator: Steven Finkelstein

HLSP Authors: Micaela Bagley, Guang Yang

Released: 2023-05-03

Updated: 2023-08-30

Primary Reference(s): Bagley et al. 2023, Yang et al. 2021, Yang et al. 2023

DOI: 10.17909/z7p0-8481

Citations: See ADS Statistics

Read Me

Source Data:

CEERS NIRCam Mosaic — This full CEERS color mosaic consists of seven filters and 1440 individual frames taken with the Near Infrared Camera (NIRCam) on JWST. This mosaic contains 4 pointings that were taken with NIRCam in June of 2022 (CEERS Epoch 1) and 6 pointings that were taken in December 2022 (CEERS Epoch 2). The CEERS NIRCam imaging is all taken in parallel to either MIRI imaging or NIRSpec MSA primary observations. Clicking on the image above will link to the full, high-resolution version (~700 MB in size). Image credit: NASA/STScI/CEERS/TACC/S. Finkelstein/M. Bagley/R. Larson.

Overview

The Cosmic Evolution Early Release Science Survey (CEERS) covers 100 sq. arcmin of the Extended Groth Strip (EGS) field with JWST NIRCam imaging in parallel to MIRI imaging, NIRSpec and NIRCam wide-field slitless spectroscopy, all in a region supported by a rich set of HST/CANDELS multi-wavelength data. CEERS demonstrates, tests, and validates efficient extragalactic surveys with coordinated, overlapping parallel observations. The observations were obtained in two epochs in Cycle 1. In June, 2022, four pointings of MIRI imaging (F560W, F770W, F1000W, F1280W, F1500W, F1800W, and F2100W) were obtained with NIRCam imaging in parallel (F115W, F150W, F200W, F277W, F356W, F410M, F444W). In December, 2022, six pointings of NIRSpec multi-object spectroscopy with the PRISM (R~100) and medium resolution gratings (G140M/F100LP, G235M/F170LP, G395M/F290LP; R~1000) were obtained with NIRCam imaging in parallel. Four of these pointings were also observed with NIRCam slitless grism spectroscopy (R~1500) with MIRI imaging in parallel.

CEERS enables immediate community science into both extragalactic JWST science drivers “First Light and Reionization” and “The Assembly of Galaxies”, including:

The discovery of 20-80 galaxies at z~9-13, constraining their abundance and physical nature
Deep spectra of >400 galaxies at z>3, including >50 known candidates at 6<z<10, enabling redshifts and constraints on physical conditions of star-formation and black hole growth via line diagnostics
Quantifying the first bulge and disk structures at z>3
Characterizing galaxy mid-IR emission to study dust-obscured star-formation and supermassive black hole growth at z~1-3.

Data Products

NIRCam image files are named according to the following convention:

hlsp_ceers_jwst_nircam_nircam<pointing>_<filt>_v0.5_i2d.fits.gz

where:

<pointing> is the pointing number, one of 1, 2, 3 or 6.
- For pointing 2, there are two sets of observations for F200W and F444W, obtained 1 week apart. The second set ("b") was affected by significant persistence. The team provides mosaics of each observation separately (i.e., "2", "2b") as well as combined together ("2all").
<filt> is the filter used, one of "f115w", "f150w", "f200w", "f277w", "f356w", "f410m", "f444w".

Data file types:

_i2d.fits.gz	Fully reduced mosaics on pixel scale of 0.03''/pix, aligned across all filters, and each with 13 extensions (explained in README file linked at the top of this page)

MIRI image files are named according to the following convention:

hlsp_ceers_jwst_miri_miri<pointing>_<filt>_v0.5_i2d.fits

where:

<pointing> is the pointing number, one of 1, 2, 3 or 6.
<filt> is the filter used, one of "f560w", "f770w", "f1000w", "f1280w", "f1500w", "f1800w", "f2100w".

Data file types:

_i2d.fits	Fully reduced mosaics on pixel scale of 0.09''/pix, aligned across all filters, and each with 11 extensions (explained in the README file linked at the top of this page)

Data Access

The CEERS data products can be downloaded directly from the table below. For each pointing, "All" returns a tar bundle of all available files.

Pointing	NIRCam Filters
NIRCam 1	All (9 GB)	F115W	F150W	F200W	F277W	F410M	F444W
NIRCam 2	All (16 GB)	F115W	F150W	F200W, F200Wb, All	F277W	F410M	F444W, F444Wb, All
NIRCam 3	All (9 GB)	F115W	F150W	F200W	F277W	F410M	F444W
NIRCam 6	All (9 GB)	F115W	F150W	F200W	F277W	F410M	F444W

Pointing	MIRI Filters
MIRI 1	All (0.4 GB)	--	F770W	F1000W	F1280W	F1500W	F1800W	F2100W
MIRI 2	All (0.4 GB)	--	F770W	F1000W	F1280W	F1500W	F1800W	F2100W
MIRI 3	All (0.2 GB)	F560W	F770W	--	--	--	--	--
MIRI 6	All (0.2 GB)	F560W	F770W	--	--	--	--	--

Citations

Please remember to cite the appropriate paper(s) below and the DOI if you use these data in a published work.

Note: These HLSP data products are licensed for use under CC BY 4.0.