Late-time JWST spectra of SN 2023xgo detect cool silicate or carbonaceous dust masses of order 0.01-0.03 solar masses plus narrow He I emission indicating ongoing circumstellar interaction at +377 days.
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3 Pith papers cite this work. Polarity classification is still indexing.
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Uniform analysis of 25 events shows SNe Ibn, SNe Icn, and FBOTs overlap in peak luminosity, rise/decline times, colors, and fitted CSM/ejecta parameters, supporting a shared dense-CSM interaction framework for most but not the most extreme FBOTs.
Numerical simulations find that off-center carbon burning in accreting CO white dwarfs produces substantial Si and S abundances that depend on initial carbon content, supporting the double WD merger scenario for SN 2021yfj-like events.
citing papers explorer
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JWST Reveals Large Reservoirs of Dust and Ongoing Circumstellar Interaction in SN Ibn/Icn 2023xgo over a Year Post-Explosion
Late-time JWST spectra of SN 2023xgo detect cool silicate or carbonaceous dust masses of order 0.01-0.03 solar masses plus narrow He I emission indicating ongoing circumstellar interaction at +377 days.
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Mapping the Dense Circumstellar Environments of SNe Ibn, SNe Icn, and Fast Blue Optical Transients
Uniform analysis of 25 events shows SNe Ibn, SNe Icn, and FBOTs overlap in peak luminosity, rise/decline times, colors, and fitted CSM/ejecta parameters, supporting a shared dense-CSM interaction framework for most but not the most extreme FBOTs.