Systematic investigation of the effect of 56Ni mixing in the early photospheric velocity evolution of stripped-envelope supernovae

Moriya, Takashi J.; Suzuki, Akihiro; Takiwaki, Tomoya; Pan, Y.-C.; Блинников, С. И.

doi:10.1093/mnras/staa2060

Cited by 16 publications

(16 citation statements)

References 51 publications

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“…computing light curves, spectral energy distribution and resulting broad-band magnitudes and colours. We use the standard parameter settings, well-explained in many papers involving STELLA simulations (see e.g., Kozyreva et al 2019;Moriya et al 2020). The thermalisation parameter is set to 0.9 as recommended by the recent study of Kozyreva et al (2020).…”

Section: Input Model and Methodsmentioning

confidence: 99%

Low-luminosity type IIP supernovae: SN 2005cs and SN 2020cxd as very low-energy iron core-collapse explosions

Kozyreva,

Janka,

Kresse

et al. 2022

Preprint

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SN 2020cxd is a representative of the family of low-energy, underluminous Type IIP supernovae (SNe), whose observations and analysis were recently reported by Yang et al. (2021). Here we re-evaluate the observational data for the diagnostic SN properties by employing the hydrodynamic explosion model of a 9 M ⊙ red supergiant progenitor with an iron core and a precollapse mass of 8.75 M ⊙ . The explosion of the star was obtained by the neutrino-driven mechanism in a fully self-consistent simulation in three dimensions (3D). Multi-band light curves and photospheric velocities for the plateau phase are computed with the one-dimensional radiation-hydrodynamics code STELLA, applied to the spherically averaged 3D explosion model as well as spherisized radial profiles in different directions of the 3D model. We find that the overall evolution of the bolometric light curve, duration of the plateau phase, and basic properties of the multi-band emission can be well reproduced by our SN model with its explosion energy of only 0.7 × 10 50 erg and an ejecta mass of 7.4 M ⊙ . These values are considerably lower than the previously reported numbers, but they are compatible with those needed to explain the fundamental observational properties of the prototype low-luminosity SN 2005cs. Because of the good compatibility of our photospheric velocities with line velocities determined for SN 2005cs, we conclude that the line velocities of SN 2020cxd are probably overestimated by up to a factor of about 3. The evolution of the line velocities of SN 2005cs compared to photospheric velocities in different explosion directions might point to intrinsic asymmetries in the SN ejecta.

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Section: Input Model and Methodsmentioning

confidence: 99%

Low-luminosity type IIP supernovae: SN 2005cs and SN 2020cxd as very low-energy iron core-collapse explosions

Kozyreva,

Janka,

Kresse

et al. 2022

Preprint

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“…Interestingly, the idea that CSM may be involved in supernovae with an early luminosity excess was also present in Goldberg and Bildsten (2016), Morozova et al (2020) and Moriya et al (2020). Smith (2013) has stressed the apparent incompatibility of the low-energy hypothesis of the Crab supernova with the high-luminosity early lightcurve and offered a detailed discussion of a CSM hypothesis.…”

Section: Discussionmentioning

confidence: 94%

A precursor interpretation for the Crab supernova 1054 A.D. very early light curve

Horvath

2022

Astrophys Space Sci

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In spite that the Crab supernova in 1054 A.D. was studied over the years, it is still not clear what type of event produced the explosion. The most detailed and reliable source of the observed light curve is recorded in the Chinese and Japanese chronicles, and suggests a quick dimming after a very bright initial peak. We shall show in this work that the Crab event can be well explained by a type of precursor, a phenomenon emerging from large supernova sampling and quite expected from Stellar Evolution considerations of low-mass progenitors. This very early bright transient is followed by the explosion itself, likely a low-luminosity supernova from "small iron core" type instead of an electron-capture event. The latter conclusion stems from recent simulation work, which predict that an electron-capture supernova would render the magnitude to be much brighter for ∼ 3 months, hence visible during daytime, and would not match the Chinese records.

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“…11 STELLA is capable of processing hydrodynamics, including shock propagation and its interaction with the medium, as well as the radiation field evolution-computing light curves, spectral energy distributions, and the resulting broadband magnitudes and colors. We use the standard parameter settings, well explained in many papers involving STELLA simulations (see, e.g., Moriya et al 2020;Tsvetkov et al 2021). The thermalization parameter is set to 0.9, as recommended by the recent study of Kozyreva et al (2020b).…”

Section: Input Model and Methodsmentioning

confidence: 99%

The Circumstellar Material around the Type IIP SN 2021yja

Kozyreva¹,

Klencki²,

Filippenko³

et al. 2022

ApJL

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The majority of Type II-plateau supernovae (SNe IIP) have light curves that are not compatible with the explosions of stars in a vacuum; instead, the light curves require the progenitors to be embedded in circumstellar matter (CSM). We report on the successful fitting of the well-observed SN IIP 2021yja as a core-collapse explosion of a massive star with an initial mass of ∼15 M ⊙ and a pre-explosion radius of 631 R ⊙. To explain the early-time behavior of the broadband light curves, the presence of 0.55 M ⊙ CSM within ∼2 × 1014 cm is needed. Like many other SNe IIP, SN 2021yja exhibits an early-time flux excess including ultraviolet wavelengths. This, together with the short rise time (<2 days) in the gri bands, indicates the presence of a compact component in the CSM, essentially adjacent to the progenitor. We discuss the origin of the preexisting CSM, which is most likely a common property of highly convective red supergiant envelopes. We argue that the difficulty in fitting the entire light curve with one spherical distribution indicates that the CSM around the SN 2021yja progenitor was asymmetric.

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Systematic investigation of the effect of 56Ni mixing in the early photospheric velocity evolution of stripped-envelope supernovae

Cited by 16 publications

References 51 publications

Low-luminosity type IIP supernovae: SN 2005cs and SN 2020cxd as very low-energy iron core-collapse explosions

Low-luminosity type IIP supernovae: SN 2005cs and SN 2020cxd as very low-energy iron core-collapse explosions

A precursor interpretation for the Crab supernova 1054 A.D. very early light curve

The Circumstellar Material around the Type IIP SN 2021yja

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