preliminary spectral analysis of SN 19941

Abstract
We present optical spectra of the Type 1c supernova 19941 in M51 and preliminary non-local thermodynamic equilibrium (non-LTE) analysis of the spectra. Our models are not inconsistent with the explosions of C + O cores of massive stars. while we find no direct evidence for helium in the optical spectra, our models cannot rule out small amounts of helium. More than 0.1 M of helium seems unlikely.
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