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.