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arXiv 2004.01503astro-ph.SRastro-ph.GA
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SN 2010 jl:最初的1400天

Disentangling Dust Components in SN 2010jl: The First 1400 Days

A. M. Bevan, K. Krafton, R. Wesson, J. E. Andrews, E. Montiel, M. Niculescu-Duvaz, M. J. Barlow, I. De Looze, G. C. Clayton

摘要:

明亮的SN 2010 jl型IIn显示出SN喷出物与致密的星周物质之间相互作用的强烈迹象。尘埃可能存在于未受冲击的喷出物中,也可能存在于相互作用区域中冲击波之间的冷而致密的壳层中,或者存在于星周介质中。我们提出和模型新的光学和红外测光和光谱SN 2010 jl从82至1367天,因为爆炸。我们分别使用辐射转移代码MOCASSIN和DAMOCLES评估光度和光谱演化。我们提出了一个相互作用的情况下,并调查由此产生的尘埃形成的情况和尘埃质量。通过对SN 2010 jl的红外光谱和光学光谱的分析,我们发现SN 2010 jl一直在不断地形成尘埃。有证据表明,在星周介质中存在着预先存在的尘埃,以及在寒冷、致密的外壳和/或喷出物中形成了新的尘埃。我们估计在SN 2010 jl爆发后约1400 d形成了0.005- 0.01 M $_{\odot}$的主要碳尘埃颗粒。

英文摘要:

The luminous Type IIn SN 2010jl shows strong signs of interaction between the SN ejecta and dense circumstellar material. Dust may be present in the unshocked ejecta, the cool, dense shell between the shocks in the interaction region, or in the circumstellar medium. We present and model new optical and infrared photometry and spectroscopy of SN 2010jl from 82 to 1367 days since explosion. We evaluate the photometric and spectroscopic evolution using the radiative transfer codes MOCASSIN and DAMOCLES, respectively. We propose an interaction scenario and investigate the resulting dust formation scenarios and dust masses. We find that SN 2010jl has been continuously forming dust based on the evolution of its infrared emission and optical spectra. There is evidence for pre-existing dust in the circumstellar medium as well as new dust formation in the cool, dense shell and/or ejecta. We estimate that 0.005--0.01M$_{\odot}$ of predominantly carbon dust grains has formed in SN 2010jl by ~1400d post-outburst.

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