Detection of helium lines in Balmer-dominated shocks of Type Ia SNRs reveals enhanced helium in some remnants and challenges shock models, enabling new constraints on progenitor environments.
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4 Pith papers cite this work, alongside 313 external citations. Polarity classification is still indexing.
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The superluminous Type Ia supernova SN 2022erq was powered by ejecta crashing into a ~3-solar-mass circumstellar shell, implying the progenitor's mass-loss rate escalated from ~0.04 to ~0.6 solar masses per year in its final decades.
SCAT DR1 delivers 1810 spectra of 1330 transients with classifications, fitted light curves, new redshifts for many host galaxies, and host properties as a testbed for photometric classification pipelines.
BayeSN analysis of ZTF Type Ia supernovae confirms a ~0.1 mag intrinsic environmental step in standardized brightness that is not explained by differences in dust extinction properties.
citing papers explorer
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Helium emission from Balmer-dominated shocks in Type Ia supernova remnants provides constraints to their progenitor systems
Detection of helium lines in Balmer-dominated shocks of Type Ia SNRs reveals enhanced helium in some remnants and challenges shock models, enabling new constraints on progenitor environments.
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SN 2022erq: A Superluminous Thermonuclear Supernova with Escalating Preexplosion Mass Loss
The superluminous Type Ia supernova SN 2022erq was powered by ejecta crashing into a ~3-solar-mass circumstellar shell, implying the progenitor's mass-loss rate escalated from ~0.04 to ~0.6 solar masses per year in its final decades.
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SCAT Data Release 1: 1810 optical spectra of 1330 transients
SCAT DR1 delivers 1810 spectra of 1330 transients with classifications, fitted light curves, new redshifts for many host galaxies, and host properties as a testbed for photometric classification pipelines.
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On the origin of the environmental step: A BayeSN view of the ZTF SN Ia DR2
BayeSN analysis of ZTF Type Ia supernovae confirms a ~0.1 mag intrinsic environmental step in standardized brightness that is not explained by differences in dust extinction properties.