CEERS Simulated Data Release v3
Please consider subscribing to our email list to receive updates related to released data products and alerts when future data releases are available.
Please consider subscribing to our email list to receive updates related to released data products and alerts when future data releases are available.
We have simulated NIRCam WFSS observations and the associated imaging for all four CEERS pointings (CEERS 5-8) using MIRAGE version 2.2.1, with input sources taken from a mock catalog created using the Santa Cruz semi-analytic model for galaxy evolution. The images were simulated using pointing and XML files based on the CEERS APT. NIRCam WFSS exposures in each grism are taken with one LWC direct image followed by two LWC out-of-field images to identify the sources associated with the spectra. During all CEERS WFSS observations and LWC imaging, the SWC observes with F115W to add depth to the NIRCam imaging in these fields.
To access the full data release directly, visit this link. Please see the associated README describing the release.
Alternatively, see below to access the input models, raw data, calibrated count rate images, and extracted spectra.
Catalogs - Input catalogs and spectra
Dispersed seed images - the input seed images, i.e., noiseless simulated data
Datacubes containing all of the individual simulated sources
All of the Mirage raw output (including direct imaging), which can be run through the JWST Calibration Pipeline
Data in DN/s (including direct imaging), these have been run through Stage 1 and WCS assignment of the Calibration Pipeline. They can be used to extract spectra in the "classic" way. Note that flat fields have not been applied to these files.
Extracted spectra using a mock, idealized extraction. See the README for information on the extraction and reading in the extracted spectra.
Notes:
Here we provide an updated set of NIRCam imaging mosaics covering a single CEERS pointing (CEERS 5). This is the same CEERS pointing that was released as part of SDR1, but with three updates/improvements:
Please see the associated README describing the release. These simulated images are also presented in Bagley et al. (2023).
To access the full data release directly, visit this link. Alternatively, see below to access the fully reduced mosaics in each filter.
The main input for our simulated NIRCam images is a mock galaxy catalog created with the Santa Cruz Semi-Analytic Model (SAM). This catalog covers a field of 782 sq. arcmin, overlapping with the observed EGS field and spanning z ~ 0 to 10. The mock catalog is presented in Yung et al. (2022). The physical model is configured identically as the model presented in Somerville et al. (2021).
Download the CEERS SAM mock galaxy catalog:
Please see the associated README describing the catalog, columns, and the references related to the creation of the SAM.
We have also added the seven z~9 galaxies in the EGS field presented by Finkelstein et al. (2022) to the imaging and WFSS simulations. The JWST photometry is estimated using the best-fit EAZY template for each source's Hubble and Spitzer photometry. Download the catalog of z~9 source positions and photometry:
Finally, we have included point sources in the NIRCam imaging and WFSS simulations. The positions and magnitudes of bright (V<16) point sources in the EGS field are added from 2MASS, WISE and Gaia. We added fainter point sources (16 < V < 29) using the Besançon Model to approximate the correct stellar density and luminosity distribution in the EGS field. Download the catalog of point sources:
Note: the point source catalog is in Vega magnitudes, while all other input catalogs are in AB magnitudes.