A major upgrade of the VALD database

By T. Ryabchikova, N. Piskunov, R. Kurucz, H. Stempels, U. Heiter, Y. Pakhomov, Paul Barklem. 2015

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ExoMol molecular line lists – XXXIII. The spectrum of Titanium Oxide (2019, methodology): “…through a variational treatment of the nuclear motion equation explicitly incorporating spin–orbit coupling (SOC) between some electronic states, and (b) Plez (1998) which has been continually updated to include molecular constants and experimental transition frequencies (Ryabchikova et al. 2015).”
A stellar census in globular clusters with MUSE: multiple populations chemistry in NGC 2808 (2019, methodology): “By comparing some of our synthetic spectra with the PHOENIX spectra, we realized that the updated atomic data for Fe I (Kurucz 2014) and Nd I (Den Hartog et al. 2003) retrieved from the VALD database (Ryabchikova et al. 2015) provided a better match and we updated the line lists accordingly.”
ExoMol line lists – XVIII. The high-temperature spectrum of VO (2016, background): “Line lists for TiO (Plez 1998; Schwenke 1998; Ryabchikova et al. 2015), despite their shortcomings, are still significantly more developed than those for VO.”