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Roman High-Latitude Imaging Survey Simulated Images

Roman Data Challenge 2 Simulated Images

Summary

Troxel et al. (2023) have simulated 20 square degrees of overlapping synthetic imaging surveys representing the full depth of the Nancy Grace Roman Space Telescope High-Latitude Imaging Survey (HLIS) observing the Dark Energy Science Collaboration (DESC) Data Challenge 2 (DC2) universe. They simulate for the first time fully chromatic images along with the detailed physics of the Sensor Chip Assemblies derived from lab measurements using the flight detectors. The simulated imaging and resulting pixel-level measurements of photometric properties of objects span a wavelength range of ~0.3 to 2.0 microns.

Roman-LSST galaxy image simulation
A comparison of an overlapping region from LSST i-band (left) and Roman H158-band (right) coadd images. The regions circled in red or blue demonstrate a grouping of at least two objects that are blended in the LSST image, but clearly distinguishable as multiple objects in the Roman HLIS image. From Troxel et al. (2023, MNRAS, 522, 2801).

Data Products

The primary data products have been publicly released by the NASA/IPAC Infrared Science Archive (IRSA):

Additional data products and documentation associated with this set of data products are available at the link above.