NLTE calculations indicate strontium is required to explain the onset of the 1μm feature at early times in AT2017gfo, while helium can dominate at later epochs with plausible masses.
J., et al., 2020, @doi [ ] 10.1093/mnras/stz3412 , https://ui.adsabs.harvard.edu/abs/2020MNRAS.492.2029S 492
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3D nebular spectra calculations for double-detonation Type Ia supernova models reveal viewing-angle dependent line profiles and tentatively support primary-only detonation over secondary detonation based on comparisons to observations.
citing papers explorer
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Strontium and helium in the kilonova AT2017gfo: Origin of the 1{\mu}m feature constrained via NLTE calculations
NLTE calculations indicate strontium is required to explain the onset of the 1μm feature at early times in AT2017gfo, while helium can dominate at later epochs with plausible masses.
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Multidimensional Nebular-Phase Calculations of Dynamically-Driven Double-Degenerate Double-Detonation Models for Type Ia Supernovae
3D nebular spectra calculations for double-detonation Type Ia supernova models reveal viewing-angle dependent line profiles and tentatively support primary-only detonation over secondary detonation based on comparisons to observations.