This database contains calibrated lanthanide atomic data of singly and doubly ionised ions. Details of the atomic structure calculations can be found in the publication: Flörs et al., 'Calibrated Lanthanide Atomic Data for Kilonova Radiative Transfer.I. Atomic Structure and Opacities', submitted to Physical Review D (2025). Contents(Z=57 to Z=70): Uncalibrated energy levels Calibrated energy levels (except Pm III) Uncalibrated E1 transitions Calibrated E1 transitions (except Pm III) For Pm III, only ground state information is available, precluding meaningful calibration against experimental energy levels. Sample file content: energy levels The header provides details on the total number of energy levels located below the ionisation threshold, along with the number of experimentally known levels that were successfully identified in our computations. Additionally, it specifies the total number of electronic configurations considered, irrespective of whether their associated levels lie below the ionisation threshold. Spectroscopic LS terms were determined using the JJ2LSJ code (G. Gaigalas, C. Fischer, P. Rynkun, and P. Jönsson, 'Transformation and Unique Labeling for Energy Levels', Atoms 5, 6 (2017)). For each energy level, we indicate whether it was calibrated to experimental energies ("xmatch"), adjusted by applying a global shift derived from the bulk properties of its corresponding J-parity group ("shifted"), or left uncalibrated ("uncalib") in cases where no energy correction was applied. Energy levels of La II Authors: Floers A., et al. Number of levels: 472 Number of xmatch levels: 108 Number of configurations: 44 --------------------------------------------------------------------------------- Column Name Unit Description --------------------------------------------------------------------------------- Index ---- Number of energy level sorted by energy Z ---- Atomic number Charge ---- Ion charge Energy cm-1 Energy of energy level J ---- Angular momentum Parity ---- Parity: 0 = even, 1 = odd Configuration ---- Leading order configuration LS ---- Leading order LS term Method ---- Calibration method: uncalib / shifted / xmatch --------------------------------------------------------------------------------- Index Z Charge Energy J Parity Configuration LS Method 0 57 1 0.00 2 0 5d2 3F xmatch 1 57 1 1016.10 3 0 5d2 3F xmatch 2 57 1 1394.46 2 0 5d2 1D xmatch 3 57 1 1895.15 1 0 5d.6s 3D xmatch 4 57 1 1970.70 4 0 5d2 3F xmatch 5 57 1 2591.60 2 0 5d.6s 3D xmatch 6 57 1 3250.35 3 0 5d.6s 3D xmatch 7 57 1 5249.70 0 0 5d2 3P xmatch 8 57 1 5718.12 1 0 5d2 3P xmatch 9 57 1 6227.42 2 0 5d2 3P xmatch Sample file content: E1 transitions The transition files provide data on radiative transitions between computed energy levels, including both experimentally matched and theoretically predicted states. Summary statistics indicate the total number of transitions, as well as the subset for which one or both participating levels were identified through experimental calibration. For each transition, the dataset includes the indices and properties of the lower and upper levels, such as energy, total angular momentum (J), parity, leading electronic configuration, and dominant LS term. The calibration status of each level is recorded as either directly matched to experimental energies ("xmatch"), adjusted via global shifts within J-parity groups ("shifted"), or left uncalibrated ("uncalib"). Each transition is further characterized by its type (E1 for all transitions in this work), transition energy, wavelength, the logarithm of the weighted oscillator strength (log gf), and the Einstein A-value (A) representing the spontaneous radiative decay rate. Transitions of La II Authors: Floers A., et al. Total number of transitions: 17743 Total number of transitions with both upper and lower xmatch level: 1239 Total number of transitions with either upper or lower xmatch level: 7672 --------------------------------------------------------------------------------- Column Name Unit Description --------------------------------------------------------------------------------- Lower ---- Index of the lower level E_Lower cm-1 Energy of the lower level J_Lower ---- Angular momentum of the lower level P_Lower ---- Parity of the lower level: 0 = even, 1 = odd Config_Lower ---- Leading order configuration of the lower level LS_Lower ---- Leading order LS term of the lower level Method_Lower ---- Lower level calibration method: uncalib / shifted / xmatch Upper ---- Index of the upper level E_Upper cm-1 Energy of the upper level J_Upper ---- Angular momentum of the upper level P_Upper ---- Parity of the upper level: 0 = even, 1 = odd Config_Upper ---- Leading order configuration of the upper level LS_Upper ---- Leading order LS term of the upper level Method_Upper ---- Upper level calibration method: uncalib / shifted / xmatch Type ---- Transitions type: E1 / M1 / E2 E_Transition cm-1 Transition energy WV_Transition A Transition wavelength Log(gf) ---- log10 of the weighted oscillator strength gf A s-1 Radiative transition rate / Einstein A-value --------------------------------------------------------------------------------- Lower E_Lower J_Lower P_Lower Config_Lower LS_Lower Method_Lower Upper E_Upper J_Upper P_Upper Config_Upper LS_Upper 0 0.00 2 0 5d2 3F xmatch 14 14147.98 2 1 4f.6s 1S 0 0.00 2 0 5d2 3F xmatch 15 14375.17 3 1 4f.6s 3G 0 0.00 2 0 5d2 3F xmatch 17 15773.77 3 1 4f.6s 3F 0 0.00 2 0 5d2 3F xmatch 19 17211.93 2 1 4f.5d 3F 0 0.00 2 0 5d2 3F xmatch 21 18235.56 3 1 4f.5d 3D 0 0.00 2 0 5d2 3F xmatch 23 18895.41 2 1 4f.5d 1D 0 0.00 2 0 5d2 3F xmatch 26 20402.82 3 1 4f.5d 1F 0 0.00 2 0 5d2 3F xmatch 28 21441.73 1 1 4f.5d 3D 0 0.00 2 0 5d2 3F xmatch 29 22106.02 2 1 4f.5d 3D 0 0.00 2 0 5d2 3F xmatch 31 22537.30 3 1 4f.5d 3D Method_Upper Type E_Transition WV_Transition Log(gf) A xmatch E1 14147.98 7068.15 -1.0213 2.5424e+06 xmatch E1 14375.17 6956.44 -1.9309 2.3086e+05 xmatch E1 15773.77 6339.64 -3.6378 5.4593e+03 xmatch E1 17211.93 5809.92 -1.4129 1.5272e+06 xmatch E1 18235.56 5483.79 -2.0328 2.9385e+05 xmatch E1 18895.41 5292.29 -1.3232 2.2631e+06 xmatch E1 20402.82 4901.28 -0.2445 2.2592e+07 xmatch E1 21441.73 4663.80 -0.6398 2.3429e+07 xmatch E1 22106.02 4523.65 -1.3769 2.7370e+06 xmatch E1 22537.30 4437.09 -1.4071 1.8955e+06 Acknowledgements: AF and GMP acknowledge support by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (ERCAdvanced Grant KILONOVA No. 885281), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 279384907 - SFB 1245, and MA 4248/3-1. RFS acknowledges the support from National funding by FCT (Portugal), through the individual research grant 2022.10009.BD. RFS, JMS and JPM acknowledge support through project funding 2023.14470.PEX ”Spectral Analysis and Radiative Data for Elemental Kilonovae Identification (SPARKLE)”.