Erratum to “Isotope shift and hyperfine structure measurements on triple resonance excitation to the autoionizing Rydberg state of atomic strontium” [J Quant Spectrosc Radiat Transf 275 (2021) 107882]

•Triple resonance excitation to the neff ∼39 Rydberg state (4d 2D3/2 series) of atomic Sr was studied using schemes (A) 689.4 nm...487.4 nm...393.8 nm and (B) 689.4 nm...472.4 nm...404.2 nm for the isotope-selective photoionization of 90Sr.•Isotope shifts and hyperfine structure constants of stable Sr isotopes were measured for the second and third transitions of schemes (A) and (B), most of which, to the best of our knowledge, have not been reported before or are more accurate than the values reported in the literature.•The obtained 90Sr level isotope shifts (LISs) of the neff ∼39 Rydberg state with respect to 88Sr using schemes (A) and (B) show significantly negative values. This fact is important because a near-zero LIS causes a decrease in optical isotopic selectivity owing to the near-resonance transition.•Our spectroscopic data will be useful in the future analysis of 90Sr in real samples and may help promote studies in other fields, such as precision measurements using cold atoms in optical traps.