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April 26, 2026Monthly Notices of the Royal Astronomical SocietyOpen Access

Helium emission from Balmer-dominated shocks in Type Ia supernova remnants provides constraints to their progenitor systems

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Authors

PDPriyam DasAustralian National UniversityISI. R. SeitenzahlAustralian National UniversityPGParviz GhavamianTowson University

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Implication

Randomized trial analyzes helium emission in Type Ia supernova remnants, indicating insights into progenitor systems.

Key Points

  • The research aims to explore helium emission from Balmer-dominated shocks in Type Ia supernova remnants to understand progenitor systems and shock physics.
  • Utilized integral-field spectroscopy with the Multi Unit Spectroscopic Explorer (MUSE).
  • Investigated helium emission lines in three Type Ia supernova remnants: SNR 0509-67.5, SNR 0519-69.0, and N103B.
  • Analyzed neutral He/H line ratios to assess helium abundances.
  • Detected broad and narrow He i lines at 5876 Å and 7065 Å in SNR 0519 and N103B.
  • Narrow He ii emission at 8236 Å was found in SNR 0519, challenging existing shock models.
  • Determined enhanced helium abundances in SNR 0509 and N103B based on neutral He/H ratios.

Cite This Study

Das et al. (2026) studied this question.

synapsesocial.com/papers/69edac4f4a46254e215b419ehttps://doi.org/10.1093/mnras/stag596
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