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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2 Pith papers cite this work. Polarity classification is still indexing.
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astro-ph.HE 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Dynamical ejecta from neutron star mergers reproduce key spectral properties of AT2017gfo in polar views, with features from Sr II, La III and other ions appearing at earlier times than observed.
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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Exploring the diversity of kilonovae with 3D radiative transfer I. The polar direction
Dynamical ejecta from neutron star mergers reproduce key spectral properties of AT2017gfo in polar views, with features from Sr II, La III and other ions appearing at earlier times than observed.