SOLAR-HRS: High-resolution extraterrestrial solar Reference Spectra for disk-integrated, disk-center, and intermediate cases

Accurate knowledge of the solar spectrum and its chemical composition represent essential data for solar physics, astronomy, cosmology, and geophysics. The determination of high-resolution solar reference spectra (disk-integrated, disk-center, or intermediate cases) is fundamental and represents key inputs for interpreting remote sensing measurements that uses sunlight. In this work, we present several new solar irradiance reference spectra at high resolution representative of solar minimum conditions. The High-resolution extraterrestrial solar Reference Spectra (HRS disk-integrated) is developed by normalizing high spectral resolution solar line data to the absolute irradiance scale of the SOLAR-ISS reference spectrum. The resulting HRS disk-integrated solar spectrum has a spectral resolution varying between 1.0 and ∼0.001 nm in the 0.5 – 4400 nm wavelength range. We have also developed a solar HRS disk-center solar spectrum, which spans 650 – 4400 nm at 0.02 to ∼ 0.001 nm spectral resolution. We implemented several solar spectra (HRS intermediate cases) for ten different solar view-angles from μ = 0.9 to μ = 0.05. Finally, we developed several spectra (disk center and disk-Integrated spectrum) based on solar modeling (MPS-ATLAS based on Kurucz solar linelists and Vald3 solar linelists).