The 91T/99aa-like Type Ia Supernova 2019vrq, Part I: Photometry, Spectroscopy, and Spectropolarimetry of a Nearly Standard Candle

arXiv:2609.31510 · astro-ph.SR, astro-ph.HE · Submitted 2026-09-25 · Read on arXiv

astro-ph.SR, astro-ph.HE

Submitted: 2026-09-25

Updated: 2026-09-25

Code: https://github.com/svalenti/FLOYDS

Terminology

• Trace — 5× in this paper · explained in 2 episodes
• Abundance — 4× in this paper · explained in 1 episode
• Accuracy — 2× in this paper · explained in 1 episode
• Calibration — 2× in this paper · explained in 7 episodes
• Consistency — 2× in this paper · explained in 3 episodes
• Astrophysics Research Consortium — 1× in this paper
• Clustering — 1× in this paper · explained in 2 episodes
• ESO Very Large Telescope — 1× in this paper
• Las Cumbres Observatory — 1× in this paper
• Society of Photo-Optical Instrumentation Engineers — 1× in this paper

Sources

• Roman Observations Time Allocation Committee: Final Report and Recommendations
• A Reference Survey for Supernova Cosmology with the Nancy Grace Roman Space Telescope

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