Nebular spectroscopy of low-luminosity Type IIP SNe from ZTF identifies two plausible ECSN candidates but derives an upper limit on the ECSN rate of ≲(5–8)×10² Gpc⁻³ yr⁻¹ implying a sAGB mass window narrower than 0.06 M⊙.
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Flash-spectroscopy Type II supernovae are more luminous and faster-declining on the plateau than normal SNe II, yet most are consistent with low-mass (<12.5 Msun) progenitors and some show late-time interaction with distant CSM.
A data-driven library of 67 individual core collapse supernova spectral templates, extended to about 1600 Angstroms, is constructed and demonstrated in simulations of photometric supernova surveys.
SN 2020aze displays early He II emission from ejecta-CSM interaction, a steep V-band decline, and semi-analytical modeling yields a ~14 solar-mass red supergiant progenitor with ~12 solar-mass ejecta and 1.5e51 erg explosion energy.
A typical Type IIP supernova's light curve and nebular spectrum indicate a partially stripped ~10 solar mass red supergiant progenitor with a dense circumstellar shell.
citing papers explorer
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Low-Luminosity Type IIP Supernovae from the Zwicky Transient Facility Census of the Local Universe. III: Hunting for electron-capture supernovae using nebular spectroscopy
Nebular spectroscopy of low-luminosity Type IIP SNe from ZTF identifies two plausible ECSN candidates but derives an upper limit on the ECSN rate of ≲(5–8)×10² Gpc⁻³ yr⁻¹ implying a sAGB mass window narrower than 0.06 M⊙.
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Final Moments III: Explosion Properties and Progenitor Constraints of CSM-Interacting Type II Supernovae
Flash-spectroscopy Type II supernovae are more luminous and faster-declining on the plateau than normal SNe II, yet most are consistent with low-mass (<12.5 Msun) progenitors and some show late-time interaction with distant CSM.
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Spectrophotometric templates for core collapse supernovae and their application in simulations of time-domain surveys
A data-driven library of 67 individual core collapse supernova spectral templates, extended to about 1600 Angstroms, is constructed and demonstrated in simulations of photometric supernova surveys.
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Early interaction signatures and an extended plateau phase in Type II SN 2020aze
SN 2020aze displays early He II emission from ejecta-CSM interaction, a steep V-band decline, and semi-analytical modeling yields a ~14 solar-mass red supergiant progenitor with ~12 solar-mass ejecta and 1.5e51 erg explosion energy.
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SN 2019hnl: A Type IIP Supernova with a Partially Stripped, Low Mass Progenitor
A typical Type IIP supernova's light curve and nebular spectrum indicate a partially stripped ~10 solar mass red supergiant progenitor with a dense circumstellar shell.