ner_tags: O O B-Person I-Person O O O O O O O O O O O O O O B-Person I-Person B-Person I-Person B-Person I-Person B-Person I-Person O B-Person I-Person O O O O O O O O O O O O O O O B-Database I-Database I-Database B-Citation I-Citation I-Citation I-Citation O B-Citation I-Citation I-Citation I-Citation I-Citation O O O O O O O O B-Organization O B-Grant O O O O B-Fellowship I-Fellowship I-Fellowship I-Fellowship I-Fellowship O B-Organization
tokens: We thank Gary Ferland for helpful suggestions that led to improvement of this paper. We are grateful to Kanti Aggarwal, Guiyun Liang, Brendan McLaughlin, Swaraj Tayal, and Oleg Zatsarinny for providing inelastic cross-section data. This work made use of the references provided in the CHIANTI atomic database (Dere et al. 1997 ; Del Zanna et al. 2015 ). This research was supported in part by NSF grant AST-1408723, and in part by NSF Research Fellowship DGE 1656466 to C.D.K.