From simulations to observations. Data release of mock TNG50 galaxies at 0.3 < z < 0.7 for WEAVE-StePS

We release the dataset linked to the publication Ikhsanova et al. 2025, consisting of multi-wavelength imaging and spectroscopic data of ∼ 750 galaxies at redshift z = 0.3, 0.5, and 0.7. In particular, we created this mock datasets from the TNG50 cosmological simulation, performed radiative transfer calculations using SKIRT v9.0 and extracted WEAVE-like fiber spectra (central 1.3 arcsec). Complementary, we built a mock imaging dataset obtained by convolving SKIRT flux densities with the response curve for multiple filters. We created SDSS ($ugriz$) images with spatial resolution of 0.396~arcsec~px$^{-1}$, ACS/WFC3 (F435W, F606W, F814W, F105W, F125W, F160W) images with spatial resolution of 0.03 and 0.06 arcsec~px$^{-1}$, and NIRCam (F090W, F115W, F150W, F200W, F277W, F356W, F444W) images with native spatial resolution of 0.031 and 0.063 arcsec~px$^{-1}$ for the short and long channel, respectively. This work provides a fundamental bench-test for the forthcoming WEAVE observations, providing the community with realistic mock spectra of galaxies that can be used to test currently available tools for deriving first-order stellar populations parameters (i.e., ages and metallicities) as well as more complex diagnostics such as mass and star formation histories.