Fast and furious -- High-velocity features of Ca and Si in the spectra of Type Ia supernovae

arXiv:2609.37719 · astro-ph.HE, astro-ph.SR · Submitted 2026-09-29 · Read on arXiv

astro-ph.HE, astro-ph.SR

Submitted: 2026-09-29

Updated: 2026-09-29

Code: https://github.com/grzeimann/Panacea

Terminology

• Abundance — 16× in this paper · explained in 1 episode
• Metallicity — 15× in this paper · explained in 3 episodes
• Core — 3× in this paper · explained in 2 episodes
• Anti-correlation — 2× in this paper · explained in 3 episodes
• Hobby-Eberly Telescope — 2× in this paper
• Adam — 1× in this paper · explained in 2 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Sparsity — 1× in this paper · explained in 4 episodes

Sources

• It's always the quiet ones: Single Degenerate Double Detonation Type Ia Supernova from Quiescent Helium Accretion
• An analysis of the Type Ia SN 2024gy and a comparison of different host extinction estimation techniques

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