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arXiv 2102.04388astro-ph.HE
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IIP型超新星SN 2012 aw的参数

Parameters of the type-IIP supernova SN 2012aw

A. A. Nikiforova, P. V. Baklanov, S. I. Blinnikov, D. A. Blinov, T. S. Grishina, Yu. V. Troitskaya, D. A. Morozova, E. N. Kopatskaya, E. G. Larionova, I. S. Troitsky

摘要:

本文介绍了对超新星SN 2012 aw在爆发后7 ~ 371天的测光观测结果。利用以前公布的光球速度值,我们计算了流体动力学模型,它同时再现了测光观测和速度测量。模型采用多能群辐射流体力学程序STELLA进行计算。我们得到了前超新星的参数:半径$R = 500 R_\odot$,镍质量$M(^{56}$ Ni $)$ $\sim 0.06 M_\odot$,前超新星质量$25 M_\odot$,抛射包层质量$23.6 M_\odot$,爆炸能量$E \sim 2 \times 10^{51}$ erg。模型祖细胞质量$M=25 M_\odot$显著超过通过分析SNe前观察结果获得的上限质量$M=17 M_\odot$。这一结果再次证实了“红超巨星问题”必须通过恒星演化和超新星爆炸理论与观测的相互作用来解决。

英文摘要:

We present the results the photometric observations of the Type IIP supernova SN 2012aw obtained for the time interval from 7 till 371 days after the explosion. Using the previously published values of the photospheric velocities we've computed the hydrodynamic model which simultaneously reproduced the photometry observations and velocity measurements. The model was calculated with the multi-energy group radiation hydrodynamics code STELLA. We found the parameters of the pre-supernova: radius $R = 500 R_\odot$, nickel mass $M(^{56}$Ni$)$ $\sim 0.06 M_\odot$, pre-supernova mass $25 M_\odot$, mass of ejected envelope $23.6 M_\odot$, explosion energy $E \sim 2 \times 10^{51}$ erg. The model progenitor mass $M=25 M_\odot$ significantly exceeds the upper limit mass $M=17 M_\odot$, obtained from analysis the pre-SNe observations. This result confirms once more that the 'Red Supergiant Problem' must be resolved by stellar evolution and supernova explosion theories in interaction with observations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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