Does energy of type IIP supernovae depends on stellar mass?

Abstract

We determine the oxygen density in the central zone of nine type IIP supernovae (SN~IIP) at the nebular stage using oxygen doublet [O I] 6300, 6364 Å. Combined with two available estimates these data indicate that oxygen densities on day 300 are distributed in rather narrow range $(2.3\pm 1)\times 10^9$ cm${}^{-3}$. The result does not depend on the distance, extinction, or model assumptions. We demonstrate that the found density distribution suggests that the explosion energy of SN~IIP increases with the stellar mass.

Accepted by Astronomy Letters

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Cited by in corpus (2)

• The Dynamics of Neutrino-Driven Supernova Explosions after Shock Revival in 2D and 3D
• Light Curves of Type IIP Supernovae from Neutrino-driven Explosions of Red Supergiants Obtained by a Semi-analytic Approach