Final Moments. III. Explosion Properties and Progenitor Constraints of CSM-interacting Type II Supernovae
W. V. Jacobson-Galán; Luc Dessart; Kyle W. Davis; K. Azalee Bostroem; C. D. Kilpatrick; R. Margutti; A. V. Filippenko; R. J. Foley · 2025 · The Astrophysical Journal
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Abstract
Abstract We present analysis of the plateau and late-time phase properties of a sample of 39 Type II supernovae (SNe II) that show narrow, transient, high-ionization emission lines (i.e., “IIn-like”) in their early-time spectra from interaction with confined, dense circumstellar material (CSM). Originally presented by W. V. Jacobson-Galán et al., this sample also includes multicolor light curves and spectra extending to late-time phases of 35 SNe with no evidence for IIn-like features at <2 days after first light. We measure photospheric phase light-curve properties for the distance-correct
Abstract by W. V. Jacobson-Galán; Luc Dessart; Kyle W. Davis; K. Azalee Bostroem; C. D. Kilpatrick; R. Margutti; A. V. Filippenko; R. J. Foley, The Astrophysical Journal (2025) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.3847/1538-4357/adfa23