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May 16, 2026The Astrophysical JournalOpen Access

The Double-peaked Calcium-strong SN 2025coe: Progenitor Constraints from Early Interaction and Ejecta Asymmetries

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Authors

ARAravind P. RaviSKSahana KumarRBRaphael Baer-Way

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Overview

Randomized trial identifies progenitor constraints of supernova SN 2025coe, suggesting implications for stellar evolution.

Key Points

  • This study aims to explore the progenitor constraints of supernova SN 2025coe through early interaction and ejecta analysis.
  • Conducted multiband photometry to identify light curve peaks on days 2 and 11 post-explosion.
  • Modeled bolometric light curve using shock cooling and circumstellar material interactions.
  • Analyzed nebular phase spectra through simultaneous line profile modeling of emission lines.
  • First light curve peak suggests either shock cooling of compact envelope or interaction with circumstellar material.
  • Second peak predominantly driven by radioactive decay of 56Ni with mass estimates of approximately 0.4–0.5 M⊙.
  • Line profile modeling indicates an asymmetric low-mass He-core progenitor explosion or a possible thermonuclear explosion scenario.

Cite This Study

Ravi et al. (2026) studied this question.

synapsesocial.com/papers/6a0808ffa487c87a6a40b0c0https://doi.org/10.3847/1538-4357/ae5b6e
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