Pre-supernova activity as a possible explanation of the peculiar properties of Type IIP supernova 2009kf
Autor: | Keiichi Maeda, Ryoma Ouchi |
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Rok vydání: | 2020 |
Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics FOS: Physical sciences Astronomy and Astrophysics Astrophysics Type (model theory) Plateau (mathematics) Constant rate Supernova Space and Planetary Science Magnitude (astronomy) Astrophysics - High Energy Astrophysical Phenomena Energy (signal processing) Envelope (waves) |
Zdroj: | Monthly Notices of the Royal Astronomical Society. 500:1889-1894 |
ISSN: | 1365-2966 0035-8711 |
DOI: | 10.1093/mnras/staa2527 |
Popis: | SN 2009kf is an exceptionally bright Type IIP Supernova (SN IIP) discovered by the Pan-STARRS 1 survey. The $V$-band magnitude at the plateau phase is $M_{V} = -18.4$ mag, which is much brighter than typical SNe IIP. We propose that its unusual properties can be naturally explained, if we assume that there was an super-Eddington energy injection into the envelope in the last few years of the evolution before the SN explosion. Using a progenitor model with such an pre-SN energy injection, we can fit the observational data of SN 2009kf with the reasonable explosion energy of $E_{\mathrm{exp}} = 2.8 \times 10^{51}$ erg and the $^{56}$Ni mass of $0.25 M_{\odot}$. Specifically, we injected the energy into the envelope at a constant rate of $3.0 \times 10^{39}$ erg s$^{-1}$ in the last 3.0 years of evolution before the core collapse. We propose that some of the unusually bright SNe IIP might result from the pre-SN energy injection to the envelope. Comment: Comments: 6 pages, 5 figures, accepted for publication in MNRAS |
Databáze: | OpenAIRE |
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