The nebular spectra of SN 2012aw and constraints on stellar nucleosynthesis from oxygen emission lines

By A. Jerkstrand, S. Smartt, Morgan Fraser, C. Fransson, J. Sollerman, F. Taddia, R. Kotak. 2013

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We present nebular-phase optical and near-infrared spectroscopy of the Type IIP supernova SN 2012aw combined with non-local thermodynamic equilibrium radiative transfer calculations applied to ejecta from stellar evolution/explosion models. Our spectral synthesis models generally show good agreement with the ejecta from a M-ZAMS = 15 M-circle dot progenitor star. The emission lines of oxygen, sodium, and magnesium are all consistent with the nucleosynthesis in a progenitor in the 14-18 M-circle dot range. We also demonstrate how the evolution of the oxygen cooling lines of [O i] lambda 5577, [O i] lambda 6300, and [O i] lambda 6364 can be used to constrain the mass of oxygen in the non-molecularly cooled ashes to 20 M-circle dot progenitor.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/d50bce4c1cfd8e5b9ee3ec6745e683bfea88a349

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Citations in the corpus

THE DEVELOPMENT OF EXPLOSIONS IN AXISYMMETRIC AB INITIO CORE-COLLAPSE SUPERNOVA SIMULATIONS OF 12–25 M ⊙ ?> STARS (2012, methodology): “Jerkstrand et al. (2014) obtained MZAMS of 14–18M⊙ on the basis of nucleosynthesis models and optical and near-infrared spectroscopy of the nebular phase.”
The search for failed supernovae with the Large Binocular Telescope: confirmation of a disappearing star (2016, background): “…2012; Beasor & Davies 2016), the dearth of higher-mass SN progenitors is supported by analyses of stellar populations near SN remnants (Jennings et al. 2014) and the absence of any Type IIP SNe with the nucleosynthetic signatures of higher-mass (> 20 M ) progenitors (Jerkstrand et al. 2014).”
The diversity of Type II supernova versus the similarity in their progenitors (2016, methodology): “These differences should be visible (see Jerkstrand et al. 2014 for a discussion), and spectral synthesis modeling has been widely used to constrain the abundance of different elements in the ejecta (Mazzali et al. 2007, 2010; Dessart & Hillier 2010; Dessart et al. 2013; Jerkstrand et al. 2012,…”
Measuring the Progenitor Masses and Dense Circumstellar Material of Type II Supernovae (2017, methodology): “…models of the corresponding events, and does not include the numerous estimates obtained from the analytical scalings, spectra or X-ray/radio signals (see, among many others, Misra et al. 2007, Jerkstrand et al. 2012, 2014, Chakraborti et al. 2016, Dhungana et al. 2016, and Yuan et al. 2016).”
Observational Constraints on the Progenitors of Core-Collapse Supernovae: The Case for Missing High-Mass Stars (2015, methodology): “For SN2012aw, the nebular phase spectra are in good agreement with the ejecta from a KEPLER model of MZAMS = 15 M progenitor star (Jerkstrand et al. 2014) and the forbidden neutral oxygen lines can be used to constrain the mass of oxygen to be less than <1 M (see Figure 9).”